US20120168061A1 - Sleeve bearing assembly and method of construction - Google Patents
Sleeve bearing assembly and method of construction Download PDFInfo
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- US20120168061A1 US20120168061A1 US13/421,978 US201213421978A US2012168061A1 US 20120168061 A1 US20120168061 A1 US 20120168061A1 US 201213421978 A US201213421978 A US 201213421978A US 2012168061 A1 US2012168061 A1 US 2012168061A1
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- yarn
- inner portion
- yarns
- bearing surface
- woven
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
- B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
- B60G21/055—Stabiliser bars
- B60G21/0551—Mounting means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
- D03D15/49—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads textured; curled; crimped
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/02—Sliding-contact bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/201—Composition of the plastic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C43/00—Assembling bearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/13—Torsion spring
- B60G2202/135—Stabiliser bar and/or tube
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/122—Mounting of torsion springs
- B60G2204/1222—Middle mounts of stabiliser on vehicle body or chassis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/41—Elastic mounts, e.g. bushings
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/04—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of halogenated hydrocarbons
- D10B2321/042—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of halogenated hydrocarbons polymers of fluorinated hydrocarbons, e.g. polytetrafluoroethene [PTFE]
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/063—Load-responsive characteristics high strength
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/12—Vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/30—Fluoropolymers
- F16C2208/32—Polytetrafluorethylene [PTFE]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/70—Polyesters, e.g. polyethylene-terephthlate [PET], polybutylene-terephthlate [PBT]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/05—Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49636—Process for making bearing or component thereof
Definitions
- This invention relates generally to sleeve bearings, and more particularly to sleeve bearing assemblies having a self-lubricating inner journal bearing portion and an outer elastomeric portion for dampening shock loads, such as for use in a suspension system of a vehicle.
- Vehicle suspension components work together to serve a variety of functions, such as maintain proper ride height, maintain wheel alignment, support vehicle weight, maintain the tires in contact with the ground surface, control the vehicle direction of travel, and provide a smooth ride by dampening shock loads.
- Some of the components are coupled together via sleeve bearings to allow relative movement therebetween.
- the sleeve bearings are fabricated having an outer portion constructed of rubber or urethane and an inner portion constructed of lubricious journal bearing material. The outer portion provides the dampening characteristics desired, while the inner portion reduces friction between the coupled components to allow the relative movement therebetween in use.
- the inner portion is known to be knitted from yarn compositions comprising a lubricious yarn material, such as polytetrafluoroethylene (PTFE) fibers, and a structural yarn material, such as polyester fibers.
- PTFE polytetrafluoroethylene
- the two yarns are knitted together such that the PTFE follows the pattern of the polyester.
- Upon knitting the inner portion it is stretched over an oversized mandrel to remove circumferential slack from the fabric and then located in a mold cavity, whereupon the outer portion is injection molded about the inner portion.
- the knitted sleeve bearing assemblies utilize an inefficient amount of PTFE in manufacture, given the PTFE follows the knitted pattern of the polyester.
- the PTFE follows the knitted pattern of the polyester.
- the resulting knitted inner portion typically allows the injected molten rubber to penetrate through the knitted yarns and into the bearing surface region of the sleeve. This occurs in part due to the need to stretch the fabric over the mandrel to remove slack from the fabric and because the knitted yarns do not provide a structure tight enough to prevent the rubber from penetrating therethrough. As such, the overall friction reducing effectiveness of the sleeve is reduced.
- the rubber bonding to the outer surface of the knitted portion can cause the knitted portion to stretch further circumferentially, thereby causing a crease to form in the knitted portion. When this occurs, the resulting product is scrap.
- the mandrel becomes increasingly hotter from being exposed to the heat from the molten rubber, thereby presenting an assembly challenge to the operator stretching the inner portion over the mandrel.
- the operator commonly wears heat resistant gloves, thus, complicating the job.
- a sleeve bearing assembly manufactured according to the present invention overcomes or greatly minimizes any limitations of the prior art, such as those described above, for example.
- a sleeve bearing assembly has an inner portion constructed from a plurality of separate yarns to provide a generally cylindrical inner journal bearing surface for receipt of a journal for relative movement therein and for engagement therewith.
- the yarns include a first yarn of lubricious yarn material and a second yarn of material that is different than the first yarn.
- the first yarn substantially provides the inner bearing surface and the second yarn substantially provides an outer surface of the inner portion.
- the bearing assembly further has an elastic outer portion injection molded at least partially about the inner portion and bonded with the outer surface. The first and second yarns are woven together.
- the first yarn is woven in one of a weft direction corresponding to a circumferential direction of the journal bearing surface or a warp direction corresponding to an axial direction of the journal bearing surface to substantially provide the bearing surface.
- the second yarn is woven in a direction different than the first yarn to substantially provide the outer surface.
- a method of constructing a sleeve bearing assembly having a generally cylindrical inner portion with a journal bearing surface and an elastomeric outer portion extending at least partially about the inner portion includes constructing the inner portion on a loom by weaving a plurality of first and second yarns together to form the journal bearing surface with the first yarns being provided as a lubricious yarn and being woven in one of a weft direction corresponding to a circumferential direction of the journal bearing surface or a warp direction corresponding to an axial direction of the journal bearing surface.
- the method further includes weaving the second yarns in a direction different than the first yarns, and then disposing the woven inner portion in a mold cavity. Further, the method includes molding the outer portion with an elastomeric material at least partially about the inner portion so that the outer portion bonds to the inner portion.
- a sleeve bearing assembly manufactured in accordance with the present invention provides a uniform self-lubricating bearing surface, reduces friction relative to a journal received therein, provides a substantially continuous self-lubricating bearing surface, reduces the potential for scrap in manufacture, increases manufacturing efficiencies, reduces the overall cost associated with manufacturing the assembly, minimizes the use of expensive bearing surface materials, maximizes the percentage of total bearing surface material in contact with the journal, minimizes the use of yarn in construction of the inner portion, increases manufacturing efficiencies and reduces labor complexities, and increases the useful life of the sleeve bearing assembly.
- FIG. 1 is a schematic perspective view of a sleeve bearing assembly constructed in accordance with one presently preferred embodiment of the invention
- FIG. 2 is a schematic cross-sectional view of a woven inner portion of the sleeve bearing assembly according to one presently preferred embodiment
- FIG. 3 is chart showing the weave pattern of the inner portion
- FIG. 4 is a diagrammatic chart showing a method of constructing the sleeve bearing assembly
- FIG. 5 is a schematic cross-sectional view of a woven inner portion constructed in accordance with another presently preferred embodiment with a coating applied thereon;
- FIG. 6 is a schematic cross-sectional view of a woven inner portion constructed in accordance with yet another presently preferred embodiment.
- FIG. 7 a chart showing the weave pattern of the woven inner portion of FIG. 6 .
- FIG. 1 shows a sleeve bearing assembly 10 constructed according to one presently preferred embodiment of the invention.
- the sleeve bearing assembly 10 is particularly useful for applications requiring dampening and reduced friction support between members coupled to one another (not shown), such as in an anti-roll bar, a control arm, or other suspension locations within a suspension system of a vehicle, for example.
- the sleeve bearing assembly 10 has an inner portion 12 ( FIG. 2 ) constructed from tightly woven yarns and an outer portion 14 that is injection molded at least partially about the inner portion 12 .
- the outer portion 14 is formed from any suitable injection moldable dampening material, such as rubber or urethane compounds, for example, that adheres or bonds to the inner portion 12 .
- the inner portion 12 is woven from a first multifilament yarn 16 , such as polyester, or PET filaments, preferably textured, or some other fiber exhibiting high loft with an affinity for adhering or bonding to the elastomeric material forming the outer portion 14 and a second multifilament yarn 18 , such as PTFE filaments (Teflon), polyoxymethalyne, or other materials exhibiting a low coefficient of friction.
- the PET yarn 16 primarily serves a structural function, such as by facilitating the bonding of the inner portion 12 to the outer portion 14 , and acting to prevent the molten elastomeric material of the outer portion 14 from penetrating into the PTFE yarn 18 .
- the PTFE yarn 18 provides a self-lubricating inner bearing surface 20 ( FIGS. 1 and 2 ) to minimize friction against a journal surface (not shown). Accordingly, the sleeve bearing assembly 10 is able to both reliably dampen vibration and forces via the outer portion 14 , while also minimizing friction between a journal surface and the bearing surface 20 via the inner portion 12 .
- one presently preferred embodiment of the inner portion 12 is woven from the first and second yarns 16 , 18 of PET and PTFE, respectively.
- the weave pattern is represented diagrammatically in FIG. 3 .
- the yarns 16 , 18 can be woven on a variety of looms, such as on a Jacob Müeller narrow fabric needle loom, for example.
- the PET yarn 16 is woven in a warp direction (in and out of the paper as viewed in FIG. 2 ) corresponding to an axial direction 21 ( FIG. 1 ) of the assembly 10
- the PTFE yarn 18 is woven in the weft direction corresponding to a circumferential direction about the axis 21 .
- the pair or yarns 16 , 18 are woven such that the PET yarn 16 forms an outer surface 23 of the inner portion 12 and the PTFE yarn 18 forms the bearing surface 20 .
- the PET yarn 16 acts primarily as a structural support or carrier for the PTFE yarn 18 , and to provide a barrier to the molten elastomeric material into the bearing surface region during the injection molding process ( FIG. 4 ).
- the PTFE yarn 18 is woven with the PET yarn 16 in a satin weft-faced weave. Accordingly, both the PET yarn 16 and the PTFE yarn 18 are presented with a satin weave finish. In the example shown here, the PTFE yarn 18 is woven in a 7:1 satin weave pattern, as shown in FIG.
- the bearing surface 20 is comprised entirely of the lubricious PTFE yarn 18 , with the exception of the occasional single overlays of the PET yarn 16 . As such, it is estimated that the bearing surface is comprised of about 80-85 percent of the PTFE yarn 18 , thereby minimizing the static and dynamic coefficient of friction relative to the journal.
- the tubular weaving process on the narrow fabric needle loom provides a stitched seam 25 that extends along the length of the inner portion 12 .
- the PET warp yarn 16 is generally provided having a denier between about 200-1000, and is shown here as being about 600 denier.
- the PET yarn 16 forms a compact, tight weave (individual yarns shown schematically in an expanded relation to one another for clarity), such that the yarn 16 is desirably maintained toward the outer surface 23 and thus, away from the bearing surface 20 .
- the relatively small denier which lends to the tight weave pattern, contributes to the prevention of the molten elastomeric material of the outer portion 14 from penetrating through the outer surface 23 during the injection molding process.
- the resulting inner portion 12 is preferably disposed on a mandrel of suitable size, preferably having an outer diameter approximating an inner diameter of the inner portion 12 , and then located with a mold cavity of an injection mold machine. As such, the effort to place the inner portion 12 on the mandrel is minimized, given the inner portion is not stretched significantly in a circumferential direction.
- the outer portion 14 is then formed by injecting the desired elastic material, such as rubber, under pressure into the mold cavity and at least partially about an outer surface 23 of the inner portion 12 .
- the outer portion 14 is allowed to cool to a predetermined temperature and/or for a predetermined amount of time, and then the resulting sleeve bearing assembly 10 is removed from the mold cavity.
- the weave pattern presents the PTFE weft yarns 18 in a circumferential direction about the inner portion 12 .
- the weft yarns 18 provide the inner portion 12 with a relatively high hoop strength, thereby eliminating the aforementioned problem of forming a crease in the inner portion 12 during the injection molding process. Accordingly, the production of scrap is minimized.
- the increased hoop strength of the inner portion 12 increases the rigidity and integrity of the bearing surface 20 , thereby maximizing its useful life under load.
- an inner portion 112 is shown wherein the inner portion 112 is constructed at least in part from material that bonds well with the rubber outer layer 10 , as described above, oriented in the weft direction, such as PET weft yarns 118 , for example.
- the warp yarns are woven with lubricious warp yarns 116 , such as PTFE yarns, for example.
- the weft yarns 118 are woven here, by way of example and without limitation, so that they extend over 3 warp yarns 116 to provide an outer surface 123 of the inner portion 112 , though they could extend over more warp yarns, if preferred for the intended application.
- yet another presently preferred construction of an inner portion 212 has circumferentially directed weft yarns 218 shown floating over 7 lubricious axially extending warp yarns 216 .
- the lubricious warp yarns 116 , 216 can be woven in either a twill or satin warp-faced pattern, with the floats being formed to provide inner bearing surfaces 120 , 220 of the inner portions 112 , 212 .
- the lubricious inner surfaces 120 , 220 provide contact with the shaft or journal (not shown) with it being believed that the warp-faced satin weave of the yarns 116 , 216 provides more lubricity to the inner bearing surfaces 120 , 220 .
- Having the lubricious warp yarns 116 , 216 extending along the length of the inner portions 112 , 212 ensures that if the woven fabric were to encounter some end fray, which is generally caused by the weft or fill yarns falling out of the warp yarns at an end, then it would be the PET weft yarns 118 , 218 being removed, and not the lubricious warp yarns 116 .
- the well yarns 118 , 218 being molded and bonded to the outer portion 14 described above, assurance is provided that the weft yarns 118 , 218 are locked or fixed in place, thereby preventing an end fray condition from occurring.
- the lubricious warp yarns 116 , 216 are also locked in place between the weft yarns 118 , 218 and the shaft extending through the inner portions 112 , 212 .
- a bonding agent or adhesive layer 50 ( FIG. 5 ) can be applied to the woven fabric of the inner portions 12 , 112 , 212 , particularly at the axially opposite ends 53 ( FIG. 1 ) of the inner portions 12 , 112 , 212 .
- the adhesive layer 50 can be applied in a variety of ways, such as in a spraying or coating process, for example.
- the adhesive layer 50 can be provided as a single or multi-coat rubber-based aqueous adhesive, by way of example and without limitation, such as nitrile rubber or silicone rubber, for example. It should be recognized that other bonding agents are contemplated herein, and the aforementioned bonding agents represent only some possible selections.
- the adhesive layer 50 also facilitates bonding between the woven fabric substrate and the natural rubber or styrene butadiene rubber outer layer 14 .
- the adhesive layer 50 is preferably applied to the desired portions of the outer surfaces 23 , 123 , 223 after being woven via a dip/saturation process, or spray coating application, for example.
- the adhesive layer 50 can be cured by hot air, for example, to facilitate the curing process.
- the adhesive layer 50 coating not only minimizes the further potential for end fray, but it also promotes a strong and reliable bond between the inner portions 12 , 112 , 212 and the outer portion 14 during molding.
- sleeve assemblies can be manufactured in a variety of shapes, sizes and diameters, such as by altering the number of warp yarns 16 incorporated into the weave.
- sleeve bearing assemblies can be utilized in a variety applications and industries other than those mentioned above. The invention is defined by the claims that issue from this application and any related applications.
Abstract
A sleeve bearing assembly and method of construction therefor includes a woven inner portion bonded to an injection molded elastic outer portion. The inner portion includes a first yarn of lubricious yarn material and a second yarn of material that is different than the first yarn. The first yarn substantially provides an inner bearing surface and the second yarn substantially provides an outer surface that is bonded to the outer portion. The first and second yarns are woven together so that the first yarn is woven in one of a weft direction corresponding to a circumferential direction of the journal bearing surface or a warp direction corresponding to an axial direction of the journal bearing surface to substantially provide the bearing surface and the second yarn is woven in a direction different than the first yarn to substantially provide the outer surface bonded to the outer portion.
Description
- This application claims priority to U.S. Provisional Application Ser. No. 60/819,320, filed Jul. 7, 2006, U.S. Provisional Application Ser. No. 60/871,669, filed Dec. 22, 2006, and also to U.S. Utility application Ser. No. 11/769,354, filed Jun. 27, 2007 which are all incorporated herein by reference in their entirety.
- 1. Technical Field
- This invention relates generally to sleeve bearings, and more particularly to sleeve bearing assemblies having a self-lubricating inner journal bearing portion and an outer elastomeric portion for dampening shock loads, such as for use in a suspension system of a vehicle.
- 2. Related Art
- Vehicle suspension components work together to serve a variety of functions, such as maintain proper ride height, maintain wheel alignment, support vehicle weight, maintain the tires in contact with the ground surface, control the vehicle direction of travel, and provide a smooth ride by dampening shock loads. Some of the components are coupled together via sleeve bearings to allow relative movement therebetween. Commonly, the sleeve bearings are fabricated having an outer portion constructed of rubber or urethane and an inner portion constructed of lubricious journal bearing material. The outer portion provides the dampening characteristics desired, while the inner portion reduces friction between the coupled components to allow the relative movement therebetween in use.
- It is known to construct sleeve bearing assemblies, such as those described above, by knitting the inner portion first and injection molding the outer portion about the inner portion. The inner portion is known to be knitted from yarn compositions comprising a lubricious yarn material, such as polytetrafluoroethylene (PTFE) fibers, and a structural yarn material, such as polyester fibers. The two yarns are knitted together such that the PTFE follows the pattern of the polyester. Upon knitting the inner portion, it is stretched over an oversized mandrel to remove circumferential slack from the fabric and then located in a mold cavity, whereupon the outer portion is injection molded about the inner portion.
- Although sleeve bearing assemblies constructed in accordance with the process described above can be generally effective in use, some improvements can be achieved. For example, the knitted sleeve bearing assemblies utilize an inefficient amount of PTFE in manufacture, given the PTFE follows the knitted pattern of the polyester. As a result, it has been determined that about three turns of PTFE are used in every revolution, and thus, only about 30 percent of the PTFE is actually required to provide a bearing surface, while the remaining 70 percent of the PTFE yarn is not necessary for use as a bearing surface. This ultimately results in cost inefficiencies, given the PTFE is generally the most expensive fiber in the sleeve. Further, the resulting knitted inner portion typically allows the injected molten rubber to penetrate through the knitted yarns and into the bearing surface region of the sleeve. This occurs in part due to the need to stretch the fabric over the mandrel to remove slack from the fabric and because the knitted yarns do not provide a structure tight enough to prevent the rubber from penetrating therethrough. As such, the overall friction reducing effectiveness of the sleeve is reduced. In addition, while performing the injection molding of rubber in the known knitted sleeves, the rubber bonding to the outer surface of the knitted portion can cause the knitted portion to stretch further circumferentially, thereby causing a crease to form in the knitted portion. When this occurs, the resulting product is scrap. Lastly, during the injection molding process, the mandrel becomes increasingly hotter from being exposed to the heat from the molten rubber, thereby presenting an assembly challenge to the operator stretching the inner portion over the mandrel. As such, the operator commonly wears heat resistant gloves, thus, complicating the job.
- A sleeve bearing assembly manufactured according to the present invention overcomes or greatly minimizes any limitations of the prior art, such as those described above, for example.
- A sleeve bearing assembly has an inner portion constructed from a plurality of separate yarns to provide a generally cylindrical inner journal bearing surface for receipt of a journal for relative movement therein and for engagement therewith. The yarns include a first yarn of lubricious yarn material and a second yarn of material that is different than the first yarn. The first yarn substantially provides the inner bearing surface and the second yarn substantially provides an outer surface of the inner portion. The bearing assembly further has an elastic outer portion injection molded at least partially about the inner portion and bonded with the outer surface. The first and second yarns are woven together. The first yarn is woven in one of a weft direction corresponding to a circumferential direction of the journal bearing surface or a warp direction corresponding to an axial direction of the journal bearing surface to substantially provide the bearing surface. The second yarn is woven in a direction different than the first yarn to substantially provide the outer surface.
- In accordance with another aspect of the invention, a method of constructing a sleeve bearing assembly having a generally cylindrical inner portion with a journal bearing surface and an elastomeric outer portion extending at least partially about the inner portion is provided. The method includes constructing the inner portion on a loom by weaving a plurality of first and second yarns together to form the journal bearing surface with the first yarns being provided as a lubricious yarn and being woven in one of a weft direction corresponding to a circumferential direction of the journal bearing surface or a warp direction corresponding to an axial direction of the journal bearing surface. The method further includes weaving the second yarns in a direction different than the first yarns, and then disposing the woven inner portion in a mold cavity. Further, the method includes molding the outer portion with an elastomeric material at least partially about the inner portion so that the outer portion bonds to the inner portion.
- A sleeve bearing assembly manufactured in accordance with the present invention provides a uniform self-lubricating bearing surface, reduces friction relative to a journal received therein, provides a substantially continuous self-lubricating bearing surface, reduces the potential for scrap in manufacture, increases manufacturing efficiencies, reduces the overall cost associated with manufacturing the assembly, minimizes the use of expensive bearing surface materials, maximizes the percentage of total bearing surface material in contact with the journal, minimizes the use of yarn in construction of the inner portion, increases manufacturing efficiencies and reduces labor complexities, and increases the useful life of the sleeve bearing assembly.
- These and other objects, features and advantages will become readily apparent to those skilled in the art in view of the following detailed description of the presently preferred embodiments and best mode, appended claims, and accompanying drawings, in which:
-
FIG. 1 is a schematic perspective view of a sleeve bearing assembly constructed in accordance with one presently preferred embodiment of the invention; -
FIG. 2 is a schematic cross-sectional view of a woven inner portion of the sleeve bearing assembly according to one presently preferred embodiment; -
FIG. 3 is chart showing the weave pattern of the inner portion; -
FIG. 4 is a diagrammatic chart showing a method of constructing the sleeve bearing assembly; -
FIG. 5 is a schematic cross-sectional view of a woven inner portion constructed in accordance with another presently preferred embodiment with a coating applied thereon; -
FIG. 6 is a schematic cross-sectional view of a woven inner portion constructed in accordance with yet another presently preferred embodiment; and -
FIG. 7 a chart showing the weave pattern of the woven inner portion ofFIG. 6 . - Referring in more detail to the drawings,
FIG. 1 shows asleeve bearing assembly 10 constructed according to one presently preferred embodiment of the invention. The sleeve bearingassembly 10 is particularly useful for applications requiring dampening and reduced friction support between members coupled to one another (not shown), such as in an anti-roll bar, a control arm, or other suspension locations within a suspension system of a vehicle, for example. The sleeve bearingassembly 10 has an inner portion 12 (FIG. 2 ) constructed from tightly woven yarns and anouter portion 14 that is injection molded at least partially about theinner portion 12. Theouter portion 14 is formed from any suitable injection moldable dampening material, such as rubber or urethane compounds, for example, that adheres or bonds to theinner portion 12. Theinner portion 12 is woven from afirst multifilament yarn 16, such as polyester, or PET filaments, preferably textured, or some other fiber exhibiting high loft with an affinity for adhering or bonding to the elastomeric material forming theouter portion 14 and asecond multifilament yarn 18, such as PTFE filaments (Teflon), polyoxymethalyne, or other materials exhibiting a low coefficient of friction. ThePET yarn 16 primarily serves a structural function, such as by facilitating the bonding of theinner portion 12 to theouter portion 14, and acting to prevent the molten elastomeric material of theouter portion 14 from penetrating into thePTFE yarn 18. ThePTFE yarn 18 provides a self-lubricating inner bearing surface 20 (FIGS. 1 and 2 ) to minimize friction against a journal surface (not shown). Accordingly, thesleeve bearing assembly 10 is able to both reliably dampen vibration and forces via theouter portion 14, while also minimizing friction between a journal surface and thebearing surface 20 via theinner portion 12. - As best shown in
FIG. 2 , one presently preferred embodiment of theinner portion 12 is woven from the first andsecond yarns FIG. 3 . Theyarns PET yarn 16 is woven in a warp direction (in and out of the paper as viewed inFIG. 2 ) corresponding to an axial direction 21 (FIG. 1 ) of theassembly 10, while thePTFE yarn 18 is woven in the weft direction corresponding to a circumferential direction about theaxis 21. The pair oryarns PET yarn 16 forms anouter surface 23 of theinner portion 12 and thePTFE yarn 18 forms the bearingsurface 20. As mentioned, thePET yarn 16 acts primarily as a structural support or carrier for thePTFE yarn 18, and to provide a barrier to the molten elastomeric material into the bearing surface region during the injection molding process (FIG. 4 ). ThePTFE yarn 18 is woven with thePET yarn 16 in a satin weft-faced weave. Accordingly, both thePET yarn 16 and thePTFE yarn 18 are presented with a satin weave finish. In the example shown here, thePTFE yarn 18 is woven in a 7:1 satin weave pattern, as shown inFIG. 2 , though it could be different, if desired. Accordingly, the bearingsurface 20 is comprised entirely of thelubricious PTFE yarn 18, with the exception of the occasional single overlays of thePET yarn 16. As such, it is estimated that the bearing surface is comprised of about 80-85 percent of thePTFE yarn 18, thereby minimizing the static and dynamic coefficient of friction relative to the journal. The tubular weaving process on the narrow fabric needle loom provides a stitchedseam 25 that extends along the length of theinner portion 12. - The
PET warp yarn 16 is generally provided having a denier between about 200-1000, and is shown here as being about 600 denier. As such, thePET yarn 16 forms a compact, tight weave (individual yarns shown schematically in an expanded relation to one another for clarity), such that theyarn 16 is desirably maintained toward theouter surface 23 and thus, away from the bearingsurface 20. In addition, the relatively small denier, which lends to the tight weave pattern, contributes to the prevention of the molten elastomeric material of theouter portion 14 from penetrating through theouter surface 23 during the injection molding process. - As shown in
FIG. 4 , upon weaving theinner portion 12, the remaining operations are performed to construct thesleeve bearing assembly 10. The resultinginner portion 12 is preferably disposed on a mandrel of suitable size, preferably having an outer diameter approximating an inner diameter of theinner portion 12, and then located with a mold cavity of an injection mold machine. As such, the effort to place theinner portion 12 on the mandrel is minimized, given the inner portion is not stretched significantly in a circumferential direction. Theouter portion 14 is then formed by injecting the desired elastic material, such as rubber, under pressure into the mold cavity and at least partially about anouter surface 23 of theinner portion 12. Theouter portion 14 is allowed to cool to a predetermined temperature and/or for a predetermined amount of time, and then the resultingsleeve bearing assembly 10 is removed from the mold cavity. - With the
inner portion 12 being woven, as described above, the weave pattern presents thePTFE weft yarns 18 in a circumferential direction about theinner portion 12. As such, theweft yarns 18 provide theinner portion 12 with a relatively high hoop strength, thereby eliminating the aforementioned problem of forming a crease in theinner portion 12 during the injection molding process. Accordingly, the production of scrap is minimized. In addition, the increased hoop strength of theinner portion 12 increases the rigidity and integrity of the bearingsurface 20, thereby maximizing its useful life under load. - As shown in
FIG. 5 , another presently preferred construction of aninner portion 112 is shown wherein theinner portion 112 is constructed at least in part from material that bonds well with the rubberouter layer 10, as described above, oriented in the weft direction, such asPET weft yarns 118, for example. In this embodiment, the warp yarns are woven withlubricious warp yarns 116, such as PTFE yarns, for example. Theweft yarns 118 are woven here, by way of example and without limitation, so that they extend over 3warp yarns 116 to provide anouter surface 123 of theinner portion 112, though they could extend over more warp yarns, if preferred for the intended application. For example, as shown inFIGS. 6 and 7 , yet another presently preferred construction of aninner portion 212 has circumferentially directedweft yarns 218 shown floating over 7 lubricious axially extendingwarp yarns 216. - The
lubricious warp yarns inner portions inner surfaces yarns lubricious warp yarns inner portions PET weft yarns lubricious warp yarns 116. In addition, with thewell yarns outer portion 14 described above, assurance is provided that theweft yarns weft yarns lubricious warp yarns weft yarns inner portions - To further yet provide assurance against an end fray condition from occurring, a bonding agent or adhesive layer 50 (
FIG. 5 ) can be applied to the woven fabric of theinner portions FIG. 1 ) of theinner portions adhesive layer 50 can be applied in a variety of ways, such as in a spraying or coating process, for example. Theadhesive layer 50 can be provided as a single or multi-coat rubber-based aqueous adhesive, by way of example and without limitation, such as nitrile rubber or silicone rubber, for example. It should be recognized that other bonding agents are contemplated herein, and the aforementioned bonding agents represent only some possible selections. Theadhesive layer 50 also facilitates bonding between the woven fabric substrate and the natural rubber or styrene butadiene rubberouter layer 14. Theadhesive layer 50 is preferably applied to the desired portions of theouter surfaces adhesive layer 50 can be cured by hot air, for example, to facilitate the curing process. As mentioned, theadhesive layer 50 coating not only minimizes the further potential for end fray, but it also promotes a strong and reliable bond between theinner portions outer portion 14 during molding. - It is to be understood that other embodiments of the invention which accomplish the same function are incorporated herein within the scope of this invention. It is also to be understood that sleeve assemblies can be manufactured in a variety of shapes, sizes and diameters, such as by altering the number of
warp yarns 16 incorporated into the weave. In addition, the sleeve bearing assemblies can be utilized in a variety applications and industries other than those mentioned above. The invention is defined by the claims that issue from this application and any related applications.
Claims (10)
1. A method of constructing a sleeve bearing assembly having a generally cylindrical inner portion with a journal bearing surface and an outer portion extending at least partially about said inner portion, comprising:
constructing the inner portion on a loom by weaving a plurality of yarns together to form the journal bearing surface, at least one of said yarns being provided as a lubricious yarn and being woven in one of a weft direction corresponding to a circumferential direction of the journal bearing surface or a warp direction corresponding to an axial direction of the journal bearing surface and other of said yarns being woven in a direction different than said at least one of said yarns;
disposing said inner portion in a mold cavity; and
molding the outer portion with an elastomeric material at least partially about said inner portion so that said outer portion bonds to said inner portion.
2. The method of claim 1 further including weaving said lubricious yarn in the weft direction.
3. The method of claim 2 further including weaving said lubricious yarn in a weft-faced satin weave.
4. The method of claim 2 further including providing the yarns extending in the warp direction as polyester multifilaments.
5. The method of claim 1 further including weaving said inner portion on a narrow fabric needle loom.
6. The method of claim 1 further including applying an adhesive coating on an outer surface of said inner portion before said molding step.
7. The method of claim 1 further including weaving said lubricious yarn in the warp direction.
8. The method of claim 7 further including weaving said lubricious yarn using a satin weave.
9. The method of claim 7 further including weaving said lubricious yarn using a twill weave.
10. The method of claim 7 further including using polyester multifilaments for the yarns extending in the weft direction.
Priority Applications (1)
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US13/421,978 US20120168061A1 (en) | 2006-07-07 | 2012-03-16 | Sleeve bearing assembly and method of construction |
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US13/421,978 US20120168061A1 (en) | 2006-07-07 | 2012-03-16 | Sleeve bearing assembly and method of construction |
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US13/421,978 Abandoned US20120168061A1 (en) | 2006-07-07 | 2012-03-16 | Sleeve bearing assembly and method of construction |
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US13/112,224 Abandoned US20110219618A1 (en) | 2006-07-07 | 2011-05-20 | Sleeve bearing assembly and method of construction |
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EP (1) | EP2038559B1 (en) |
JP (1) | JP5317352B2 (en) |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110314676A1 (en) * | 2006-07-07 | 2011-12-29 | James Benjamin B | Sleeve bearing assembly and method of construction |
US9776540B2 (en) | 2014-12-19 | 2017-10-03 | Saint-Gobain Performance Plastics Pampus Gmbh | Bearing with sliding radial components |
US11378124B2 (en) | 2017-07-14 | 2022-07-05 | Saint-Gobain Performance Plastics Pampus Gmbh | Clip, clip assembly, and method of making and using the same |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8152380B2 (en) * | 2006-07-07 | 2012-04-10 | Federal-Mogul World Wide, Inc. | Sleeve bearing assembly and method of construction |
KR20120029853A (en) * | 2010-09-17 | 2012-03-27 | 엘지전자 주식회사 | Washing machine |
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CN104149364B (en) * | 2014-06-19 | 2016-07-13 | 福建龙溪轴承(集团)股份有限公司 | A kind of manufacture method of PTFE fabric self-lubricating knuckle bearing |
FR3023880B1 (en) * | 2014-07-16 | 2017-05-26 | Hydromecanique & Frottement | AUTOLUBRICATING FRICTION COMPOSITE PIECE |
DE102015104864A1 (en) * | 2015-03-30 | 2016-10-06 | Thyssenkrupp Ag | Bearing element for a stabilizer of a vehicle |
US11174895B2 (en) * | 2019-04-30 | 2021-11-16 | General Electric Company | Bearing for a wind turbine drivetrain having an elastomer support |
EP3742011A1 (en) * | 2019-05-24 | 2020-11-25 | Aktiebolaget SKF | Liner with improved resistance to wear and plain bearing comprising such a liner |
CN114375353B (en) * | 2019-09-10 | 2023-08-11 | 费德罗-莫格尔动力系公司 | Corrugated woven sleeve and method of making same |
Citations (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3033623A (en) * | 1958-09-02 | 1962-05-08 | John B Thomson | Fluorocarbon sleeve bearing |
US3594049A (en) * | 1969-06-19 | 1971-07-20 | Sargent Industries | Bearing liner |
US3804479A (en) * | 1972-12-21 | 1974-04-16 | Rexnord Inc | Low friction fabric-lined bearings and improved fabric therefor |
US3864197A (en) * | 1970-01-09 | 1975-02-04 | Samuel M Shobert | Plastic bearing |
US3870589A (en) * | 1973-07-20 | 1975-03-11 | Samuel M Shobert | Carbon-fluorocarbon fiber-plastic composite bearing |
US3950599A (en) * | 1974-02-21 | 1976-04-13 | New Hampshire Ball Bearings, Inc. | Low-friction laminate liner for bearings |
US3950047A (en) * | 1973-10-04 | 1976-04-13 | Sargent Industries, Inc. | Bearing material with microencapsulated lubricant |
US4074512A (en) * | 1971-07-08 | 1978-02-21 | Textron, Inc. | Low-friction fabric bearing |
US4107381A (en) * | 1973-09-18 | 1978-08-15 | Rexnord Inc. | Composite article providing seamless fabric-lined bearings in multiple |
US4263361A (en) * | 1976-02-12 | 1981-04-21 | Glyco-Metall-Werke Daelen & Loos Gmbh | Laminated material for the production of plain bearing elements |
US4358167A (en) * | 1981-05-26 | 1982-11-09 | The Torrington Company | Bearing element |
US4509870A (en) * | 1983-05-16 | 1985-04-09 | Kabushiki Kaisha Miura Kumihimo Kogyo | Plastic slide bearing |
US5229198A (en) * | 1992-05-18 | 1993-07-20 | Pacific Bearing Co. | Bearing material having a matrix impregnated with polymeric resin |
US5843542A (en) * | 1997-11-10 | 1998-12-01 | Bentley-Harris Inc. | Woven fabric having improved flexibility and conformability |
US20110219618A1 (en) * | 2006-07-07 | 2011-09-15 | Gerald Thomas Lien | Sleeve bearing assembly and method of construction |
US8021051B2 (en) * | 2006-07-07 | 2011-09-20 | Federal-Mogul World Wide, Inc. | Sleeve bearing assembly and method of construction |
US8118492B2 (en) * | 2006-04-06 | 2012-02-21 | Saint-Gobain Performance Plastics Pampus Gmbh | Plain bearing and play-free plain bearing arrangement |
US8226297B2 (en) * | 2006-09-14 | 2012-07-24 | Federal-Mogul Deva Gmbh | Universal joint bearing with plastic outer ring and procedure for its production |
US20130040081A1 (en) * | 2011-04-18 | 2013-02-14 | Masanori Yoshimura | Multilayer textile sleeve and method of construction thereof |
Family Cites Families (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE24765E (en) * | 1960-01-12 | Low friction fabric material | ||
US2128087A (en) * | 1936-06-10 | 1938-08-23 | Thomas L Gatke | Self-lubricating bearing |
US2862283A (en) * | 1957-05-28 | 1958-12-02 | Russell Mfg Co | Anti-friction fabric |
US3097060A (en) | 1959-12-10 | 1963-07-09 | Gen Motors Corp | Bearing structure and method of manufacture therefor |
US3068053A (en) | 1960-02-16 | 1962-12-11 | Russell Mfg Co | Fabric bearing |
US3110530A (en) | 1962-01-16 | 1963-11-12 | Gen Electric | Self-lubricating sleeve bearing |
US3328100A (en) | 1964-03-17 | 1967-06-27 | Abex Corp | Bearings |
US3616000A (en) | 1968-05-20 | 1971-10-26 | Rex Chainbelt Inc | Seamless fabric-lined bearing of multiplelength construction |
US3692375A (en) | 1970-12-01 | 1972-09-19 | Textron Inc | Composite plastic bearing and method for making the same |
US3806216A (en) | 1972-04-04 | 1974-04-23 | Kacarb Products Corp | Molded plastic bearing assembly |
US3929396A (en) | 1972-04-04 | 1975-12-30 | Kamatics Corp | Molded plastic bearing assembly |
US4048370A (en) | 1972-04-04 | 1977-09-13 | Kamatics Corporation | Shaped bearing member |
US4134842A (en) | 1972-10-11 | 1979-01-16 | Kamatics Corporation | Molded plastic bearing assembly |
US4189985A (en) | 1977-12-21 | 1980-02-26 | Rexnord Inc. | Fabric-lined epoxy resin cylinder with lubricant retaining grooves |
US4174739A (en) * | 1978-02-21 | 1979-11-20 | Fenner America Ltd. | Tubular fabric |
JPS5922140Y2 (en) | 1979-10-16 | 1984-07-02 | 忠裕 吉田 | Weft feeding device for needle looms, etc. |
US4717268A (en) | 1981-04-20 | 1988-01-05 | Kamatics Corporation | Bearing construction |
US5137374A (en) | 1981-04-20 | 1992-08-11 | Kamatics Corporation | Titanium bearing surface |
US4842424A (en) | 1981-04-20 | 1989-06-27 | Kamatics Corporation | Self-aligning track roller |
US4976550A (en) | 1987-08-03 | 1990-12-11 | Plas/Steel Products, Inc. | Expanded fiber-reinforced bearings |
JPH0193619A (en) | 1987-10-02 | 1989-04-12 | Tsubakimoto Chain Co | Sleeve-like bearing |
US4916749A (en) | 1989-04-20 | 1990-04-10 | The Pullman Company | Elastomeric bushing and method of manufacturing the same |
JP2820464B2 (en) | 1989-11-06 | 1998-11-05 | 帝人株式会社 | Two-way stretch fabric |
JP2640551B2 (en) | 1990-04-09 | 1997-08-13 | テクノロール 株式会社 | Offset printing roll surface material |
US5431500A (en) | 1992-08-26 | 1995-07-11 | Rexnord Corporation | Bearing with bearing surface of integrally bonded self-lubricating material |
US5373637A (en) | 1992-12-15 | 1994-12-20 | Rexnord Corporation | Process of producing a bearing having internal lubrication grooves |
US5417499A (en) | 1993-03-31 | 1995-05-23 | Eagle-Picher Industries, Inc. | Fabric lined bushing |
US6239049B1 (en) * | 1998-12-22 | 2001-05-29 | 3M Innovative Properties Company | Aminoplast resin/thermoplastic polyamide presize coatings for abrasive article backings |
GB2351505A (en) * | 1999-06-29 | 2001-01-03 | Jwi Ltd | Two-layer woven fabric for papermaking machines |
US20030190853A1 (en) * | 1999-12-21 | 2003-10-09 | Scott A. Lovingood | Chambray fabric having unique characteristics and method of manufacturing same |
WO2001048285A1 (en) * | 1999-12-24 | 2001-07-05 | Johann Berger | Ribbon and method for production thereof |
DE10029371A1 (en) * | 2000-06-20 | 2002-01-03 | Merck Patent Gmbh | Heterocyclic aminoalkylpyridine derivatives as psychotropic drugs |
US6328080B1 (en) * | 2000-09-27 | 2001-12-11 | Federal-Mogul Systems Protection Group, Inc. | Woven sleeve with integral monofilament fasteners |
US6672749B2 (en) | 2001-04-25 | 2004-01-06 | Turfstore.Com, Inc. | Optically marked surface |
JPWO2002092894A1 (en) * | 2001-05-16 | 2005-03-10 | 旭化成せんい株式会社 | Toothed belt fabric |
CN100357508C (en) * | 2001-07-05 | 2007-12-26 | 阿斯坦约翰逊公司 | Industrial fabric including yarn assemblies |
US20030035602A1 (en) | 2001-08-16 | 2003-02-20 | Shobert Benjamin A. | Injection molded fabric lined self-lubricating bearing |
DE60144070D1 (en) * | 2001-12-19 | 2011-03-31 | Toray Industries | CARBON FIBER REINFORCEMENT FABRICS AND PREPREGREGATION METHOD |
WO2004020888A2 (en) | 2002-08-28 | 2004-03-11 | Federal-Mogul Powertrain, Inc. | Cable guide sleeving structure |
DE602004004643T2 (en) | 2003-04-23 | 2007-05-31 | Glacier Garlock Bearings, Inc. | Composite bearing and method for its production |
TWI292445B (en) | 2004-02-09 | 2008-01-11 | Asahi Schwebel Co Ltd | Double weaved glass cloth, and prepreg and substrate for print circuit board using the glass cloth |
US20050186367A1 (en) | 2004-02-19 | 2005-08-25 | Hanrahan James R. | Low friction, abrasion-resistant materials and articles made therefrom |
JP2007534850A (en) | 2004-02-20 | 2007-11-29 | フェデラル−モーグル パワートレイン インコーポレイテッド | Low friction pull tape |
US8043689B2 (en) * | 2004-06-29 | 2011-10-25 | Propex Operating Company Llc | Pyramidal fabrics having multi-lobe filament yarns and method for erosion control |
KR20070039540A (en) * | 2004-07-20 | 2007-04-12 | 페더랄-모굴 월드 와이드, 인코포레이티드 | Self-curling sleeve |
-
2007
- 2007-06-27 US US11/769,354 patent/US8152380B2/en active Active
- 2007-06-28 JP JP2009518552A patent/JP5317352B2/en active Active
- 2007-06-28 WO PCT/US2007/072316 patent/WO2008005786A2/en active Application Filing
- 2007-06-28 KR KR1020097002528A patent/KR101385559B1/en active IP Right Grant
- 2007-06-28 CN CN2007800330137A patent/CN101529103B/en active Active
- 2007-06-28 EP EP07812406.2A patent/EP2038559B1/en active Active
-
2011
- 2011-05-20 US US13/112,224 patent/US20110219618A1/en not_active Abandoned
-
2012
- 2012-03-16 US US13/421,978 patent/US20120168061A1/en not_active Abandoned
Patent Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3033623A (en) * | 1958-09-02 | 1962-05-08 | John B Thomson | Fluorocarbon sleeve bearing |
US3594049A (en) * | 1969-06-19 | 1971-07-20 | Sargent Industries | Bearing liner |
US3864197A (en) * | 1970-01-09 | 1975-02-04 | Samuel M Shobert | Plastic bearing |
US4074512A (en) * | 1971-07-08 | 1978-02-21 | Textron, Inc. | Low-friction fabric bearing |
US3804479A (en) * | 1972-12-21 | 1974-04-16 | Rexnord Inc | Low friction fabric-lined bearings and improved fabric therefor |
US3870589A (en) * | 1973-07-20 | 1975-03-11 | Samuel M Shobert | Carbon-fluorocarbon fiber-plastic composite bearing |
US4107381A (en) * | 1973-09-18 | 1978-08-15 | Rexnord Inc. | Composite article providing seamless fabric-lined bearings in multiple |
US3950047A (en) * | 1973-10-04 | 1976-04-13 | Sargent Industries, Inc. | Bearing material with microencapsulated lubricant |
US3950599A (en) * | 1974-02-21 | 1976-04-13 | New Hampshire Ball Bearings, Inc. | Low-friction laminate liner for bearings |
US4263361A (en) * | 1976-02-12 | 1981-04-21 | Glyco-Metall-Werke Daelen & Loos Gmbh | Laminated material for the production of plain bearing elements |
US4358167A (en) * | 1981-05-26 | 1982-11-09 | The Torrington Company | Bearing element |
US4509870A (en) * | 1983-05-16 | 1985-04-09 | Kabushiki Kaisha Miura Kumihimo Kogyo | Plastic slide bearing |
US5229198A (en) * | 1992-05-18 | 1993-07-20 | Pacific Bearing Co. | Bearing material having a matrix impregnated with polymeric resin |
US5843542A (en) * | 1997-11-10 | 1998-12-01 | Bentley-Harris Inc. | Woven fabric having improved flexibility and conformability |
US8118492B2 (en) * | 2006-04-06 | 2012-02-21 | Saint-Gobain Performance Plastics Pampus Gmbh | Plain bearing and play-free plain bearing arrangement |
US20110219618A1 (en) * | 2006-07-07 | 2011-09-15 | Gerald Thomas Lien | Sleeve bearing assembly and method of construction |
US8021051B2 (en) * | 2006-07-07 | 2011-09-20 | Federal-Mogul World Wide, Inc. | Sleeve bearing assembly and method of construction |
US8152380B2 (en) * | 2006-07-07 | 2012-04-10 | Federal-Mogul World Wide, Inc. | Sleeve bearing assembly and method of construction |
US8464427B2 (en) * | 2006-07-07 | 2013-06-18 | Federal-Mogul World Wide, Inc. | Sleeve bearing assembly and method of construction |
US8226297B2 (en) * | 2006-09-14 | 2012-07-24 | Federal-Mogul Deva Gmbh | Universal joint bearing with plastic outer ring and procedure for its production |
US20130040081A1 (en) * | 2011-04-18 | 2013-02-14 | Masanori Yoshimura | Multilayer textile sleeve and method of construction thereof |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110314676A1 (en) * | 2006-07-07 | 2011-12-29 | James Benjamin B | Sleeve bearing assembly and method of construction |
US8464427B2 (en) * | 2006-07-07 | 2013-06-18 | Federal-Mogul World Wide, Inc. | Sleeve bearing assembly and method of construction |
US9776540B2 (en) | 2014-12-19 | 2017-10-03 | Saint-Gobain Performance Plastics Pampus Gmbh | Bearing with sliding radial components |
US11378124B2 (en) | 2017-07-14 | 2022-07-05 | Saint-Gobain Performance Plastics Pampus Gmbh | Clip, clip assembly, and method of making and using the same |
Also Published As
Publication number | Publication date |
---|---|
EP2038559A2 (en) | 2009-03-25 |
US8152380B2 (en) | 2012-04-10 |
EP2038559A4 (en) | 2013-09-18 |
JP2009542995A (en) | 2009-12-03 |
US20080006062A1 (en) | 2008-01-10 |
WO2008005786A2 (en) | 2008-01-10 |
KR101385559B1 (en) | 2014-04-15 |
CN101529103A (en) | 2009-09-09 |
US20110219618A1 (en) | 2011-09-15 |
WO2008005786A9 (en) | 2008-05-15 |
WO2008005786A3 (en) | 2008-04-03 |
JP5317352B2 (en) | 2013-10-16 |
EP2038559B1 (en) | 2015-03-11 |
KR20090027766A (en) | 2009-03-17 |
CN101529103B (en) | 2011-11-09 |
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Legal Events
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AS | Assignment |
Owner name: FEDERAL-MOGUL WORLD WIDE, INC., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIEN, GERALD THOMAS;MALLOY, CASSIE MARIE;AVULA, RAMESH R.;REEL/FRAME:027874/0876 Effective date: 20070627 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |