WO2005102607A1 - Attachment system for a sanding tool - Google Patents
Attachment system for a sanding tool Download PDFInfo
- Publication number
- WO2005102607A1 WO2005102607A1 PCT/US2005/008574 US2005008574W WO2005102607A1 WO 2005102607 A1 WO2005102607 A1 WO 2005102607A1 US 2005008574 W US2005008574 W US 2005008574W WO 2005102607 A1 WO2005102607 A1 WO 2005102607A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- attachment
- abrasive article
- pad
- conversion pad
- fastening elements
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
- B24D9/08—Circular back-plates for carrying flexible material
- B24D9/085—Devices for mounting sheets on a backing plate
Definitions
- the present invention relates generally to sanding tools such as edger sanders or random orbit sanders and, more particularly, to an attachment system that allows an abrasive article to be easily attached to or separated from the sanding tool.
- An edger sander is a power tool used to sand the perimeter region of a floor or any other areas of a floor that cannot be sanded by a larger sanding machine such as a drum or belt type sander.
- Edger sanders use abrasive articles, such as abrasive sheets or discs, to strip coatings, level, and smooth scratches from all types of wood flooring prior to applying a coating, such as urethane, to the floor.
- Abrasive sheets and discs are available in a wide variety of sizes, shapes, and abrasive particle sizes (referred to by grit number).
- a backup pad is often used to mount or attach the abrasive article to the edger sander.
- abrasive discs were bolted to the back-up pad of the edger sander by hand or using a wrench.
- Such an attachment system made replacement of the abrasive discs unnecessarily laborious and time consuming.
- hook and loop attachment systems have been provided to allow the abrasive discs to be more easily attached to and removed from the back-up pad.
- back-up pads typically include a face that does not provide a suitable mating surface for a hook or loop type of attachment system. Consequently, abrasive articles having a hook and loop attachment system cannot be attached directly to the back-up pad, but require a back-up pad having a face modified to provide an attachment surface for a hook and loop type attachment system. This is typically accomplished with a conversion pad that is attached to the face of the back-up pad to provide the back-up pad with a mating surface for the hook and loop attachment surface of the abrasive article.
- the invention overcomes the above-identified limitations in the field by providing an attachment system for attaching an abrasive article, such as an abrasive sheet or disc, to a sanding tool that allows the abrasive article to be quickly and easily removed from the sanding tool.
- the attachment system includes a first major surface including an attachment region with attachment material for attachment with an associated mating surface, and a non-attachment region along at least a portion of an edge of the first major surface that forms an attachment with the associated mating surface that is weaker than the connection between the attachment region and the associated mating surface. That is, the force required to separate the non-attachment region from the associated mating surface is less than the force required to separate the attachment region from the associated mating surface.
- the connection between the non-attachment region and the associated mating surface is preferably sufficiently weak to allow a user to manually grasp the abrasive article in the area adjacent the non-attachment region and separate the abrasive article from the sanding tool.
- the attachment system comprises a first major surface of a conversion pad and the conversion pad has a second major surface opposite the first major surface adapted to engage the sanding tool.
- the associated mating surface may comprise a first major surface of the abrasive article, which includes an abrasive second major surface opposite the first major surface for abrading a work surface.
- the present invention provides a conversion pad for attaching an abrasive article to a back-up pad.
- the conversion pad comprises a pad having first and second opposed major surfaces, the first major surface being adapted for engagement with the back-up pad and the second major surface including an attachment surface including attachment material for attaching the conversion pad with the abrasive article.
- the non-attachment surface extends along at least a portion of an edge region of the second surface, thereby to allow a user to grasp the abrasive article and separate the abrasive article from the conversion pad.
- the present invention provides an abrasive article for attachment to a conversion pad.
- the abrasive article comprises a sheet having first and second opposed major surfaces.
- the first major surface includes abrasive for abrading a work surface and the second major surface includes an attachment surface including attachment material for attaching the abrasive article to the conversion pad and a non- attachment surface along at least a portion of an edge region of the second surface, thereby to allow a user to grasp the abrasive article and thereby separate the abrasive article from the conversion pad.
- the present invention provides an abrading tool, such as an edger sander, including a back-up pad, a conversion pad connected with the back-up pad, and an abrasive article connected with the conversion pad, wherein the conversion pad comprises a pad having first and second opposed major surfaces, the first major surface including abrasive for abrading a work surface and the second major surface including an attachment surface including attachment material for attaching the conversion pad with the abrasive article and a non-attachment surface along at least a portion of an edge region of the second surface, thereby to allow a user to grasp the abrasive article and separate the abrasive article from the conversion pad.
- an abrading tool such as an edger sander, including a back-up pad, a conversion pad connected with the back-up pad, and an abrasive article connected with the conversion pad
- the conversion pad comprises a pad having first and second opposed major surfaces, the first major surface including abrasive for abrading a work surface and the second
- the present invention provides the combination of a conversion pad and an abrasive article, the conversion pad and abrasive article including mating surfaces defining an attachment area and non-mating surfaces defining a non- attachment area.
- the non-attachment area is provided along at least a portion of an adjacent edge region between the conversion pad and the abrasive article, thereby to allow a user to grasp the abrasive article and separate the abrasive article from the conversion pad.
- the non-attachment region comprises a continuous edge region extending around the entire perimeter of the first major surface.
- the attachment surface comprises a plurality of mechanical fastening elements.
- the mechanical fastening elements comprise hook-type fastening elements.
- the first major surface of the back-up pad, conversion pad, or abrasive article is circular and the non-attacbment region comprises an annular region extending around the entire perimeter of the first major surface.
- the non-attachment region includes fastening elements that have been altered to inhibit attachment of the fastening elements with the associated mating surface, hi various aspects of the invention, the fastening elements are removed, bent, crushed, melted, or otherwise altered to prevent attachment of the fastening elements with the associated mating surface, h another embodiment of the invention, the attachment material comprises adhesive.
- the non-attachment region includes a coating material applied to the fastening elements to inhibit attachment of the fastening elements to an associated mating surface.
- the coating may be a sheet of material applied to the terminal ends of the fastening elements, thereby covering the fastening elements and preventing the fastening elements from attaching to an associated attachment surface, or a hardenable liquid applied to fill the open space around the fastening elements, thereby preventing the fastening elements from attaching to an associated attachment surface.
- the non-attachment region may also be free of attachment material.
- the attachment region and the non-attachment region are co- planar to provide a uniform abrading surface.
- the conversion pad and the abrasive article may also have substantially the same profile and have aligned outer edges.
- the attachment system comprises a major surface of the abrasive article and the abrasive article has a second major surface opposite its first major surface including abrasive for abrading a work surface.
- the associated mating surface comprises a surface of at least one of a conversion pad, a back-up pad, an abrasive article, and a block sander.
- the attachment surface comprises a loop-type fabric material adapted to mate with an associated mating surface comprising hoop-type fastening elements.
- the present invention is not limited to any particular type of sanding tool and may include power sanding tools, such as edger sanders and orbital sander, and manual block sanders.
- abrasive article can be readily separated from the conversion pad to allow a user to replace the abrasive article.
- Another advantage of certain embodiments of the invention is that the abrasive article is uniformly supported by the conversion pad, thereby providing a consistent and uniform abrading surface for abrading the work surface.
- edges of the abrasive article and conversion pad are aligned, thereby allowing a work surface, such as a hardwood floor, to be sanded immediately adjacent an abutting surface, such as a wall.
- Fig. 1 is an exploded view of an abrasive article attached to a back-up pad using an attachment system according to the invention
- Fig. 2 is a sectional view of the conversion pad of Fig. 1
- Fig. 3 a is a plan view of a second embodiment of the invention
- Fig. 3b is a plan view of a third embodiment of the invention
- Fig. 4a is a plan view of a fourth embodiment of the invention
- Fig. 4b is a sectional view taken along line 4b-4b of Fig. 4a
- Fig. 5 a is a plan view of a fifth embodiment of the invention
- Fig. 1 is an exploded view of an abrasive article attached to a back-up pad using an attachment system according to the invention
- Fig. 2 is a sectional view of the conversion pad of Fig. 1
- Fig. 3 a is a plan view of a second embodiment of the invention
- Fig. 3b is a plan view of a
- FIG. 5b is a sectional view taken along line 5b-5b of Fig. 5a;
- Fig. 6a is a plan view of a sixth embodiment of the invention;
- Fig. 6b is a sectional view taken along line 6b-6b of Fig. 6a;
- Fig. 7a is a plan view of a seventh embodiment of the invention;
- Fig. 7b is a sectional view taken along line 7b-7b of Fig. 7a;
- Fig. 8 is a sectional view showing an abrasive article being removed from the conversion pad of Fig. 2;
- Fig. 9a is a plan view of an eighth embodiment of the invention;
- Fig. 9b is a sectional view taken along line 9b-9b of Fig. 9a.
- Fig. 1 shows an assembly 2 for attaching an abrasive article 4 to a sanding tool (not shown).
- the assembly 2 includes a back-up pad 6, a conversion pad 8 secured to the back-up pad with a bolt 10, and an abrasive article 4, such as an abrasive sheet or disc, which is attached to the conversion pad 8 in the manner described below.
- the back-up pad 6 has an engagement face 12 against which the conversion pad 8 is placed.
- Bolt 10 secures the conversion pad 8 against the engagement face 12. The bolt also allows the conversion pad 8 to be removed from the back-up pad 6 and be replaced periodically, if necessary.
- the back-up pad 6 is depicted generically to represent a wide variety of back-up pads and is not limited to a back-up pad having a particular size, shape, or material for its construction.
- the conversion pad 8 is secured to the back-up pad 6 to enable the back-up pad 6 to be used with an abrasive article 4 having an attachment system that could not otherwise be attached to the engagement face 12 of the conversion pad 8.
- the conversion pad 8 includes a first major surface 14 that attaches to the abrasive article 4, and an opposed second major surface 16 that engages the engagement face 12 of the back-up pad 6.
- the first major surface 14 includes a plurality of hook-type fastening elements 26.
- the conversion pad 8 When secured to the engagement face 12, the conversion pad 8 provides the back-up pad 6 with a new mating surface, namely surface 14, that can be used to attach the abrasive article 4 to the back-up pad 6.
- the conversion pad 8 includes a backing 15 that serves to increase the structural integrity and durability of the conversion pad 8.
- the backing may be, for example, a layer of vulcanized fiber board that is adhesively bonded to the conversion pad 8 with a layer of hot melt adhesive 17.
- the abrasive article 4 includes a first major surface 28 comprising an associated mating surface 28 for engagement with the first major surface 14 of the conversion pad 8, and an abrasive second major surface 21 opposite the first major surface for abrading a work surface such as a hardwood floor (not shown).
- the abrasive article 4 and the conversion pad 8 preferably have substantially the same size and shape, and have matching profiles such that their outer peripheral edges are aligned, hi this manner, the conversion pad 8 does not interfere with the abrasive article's ability to sand along the edge of a work surface that abuts another surface.
- the first major surface 14 of the conversion pad 8 includes an attachment system 18 comprising an interior attachment region 20 and a peripheral non-attachment region 22.
- the attachment region 20 includes attachment material 24 for removably connecting the abrasive article 4 with the conversion pad 8.
- connection between the abrasive article 4 and the conversion pad 8 should securely attach the abrasive article 4 with the conversion pad 8 and should resist relative movement between the abrasive article 4 and conversion pad 8 during use, but should permit the abrasive article 4 to be removed from the conversion pad 8 with a relatively small amount of force.
- the attachment material 24 includes a plurality of outwardly projecting fastening elements 26 that releasably engage the associated mating surface 28 of the abrasive article 4.
- the associated mating surface 28 includes loop fabric 29 that may be knitted loop, warp knitted loop fabric, stitched loop fabric, or woven loop fabric having loops that releasably engage the fastening elements 26, and thereby attach the abrasive article 4 with the conversion pad 8.
- the attachment material 24 and associated mating surface 28 may comprise a variety of suitable mechanical fasteners including hook-type fastening elements that mate with loop-type mating material, self-mating profile extruded fasteners having a plurality of intermeshing, or interengaging elements or fasteners such as mushroom shaped fasteners elements, or other known fasteners.
- the fastening elements 26 are self-mating, i.e., capable of interlockingly engaging other fastening elements having an identical or substantially similar structure, the associated mating surface 28 of the abrasive article 4 is provided with the same fastening elements as the conversion pad 8 first major surface 14.
- the fastening elements 26 are preferably refastenable, i.e., once a fastening element has been connected with a mating surface, it can be pulled away without destroying its ability to connect again with the same mating surface or another mating surface.
- Suitable fasteners may take on a variety of forms.
- One exemplary type includes the hook-and-hook fastener described in U.S. Pat. No.
- This type of fastener includes an expanded region fitting into a seat above which is a reduced cross section or restricted pocket and/or by flexing of the stem. Joining of this type of fastener is normally associated with a single or double snap as the fastener is seated.
- Another type of fastener having a multiplicity of intermeshing solid protrusions is described in U.S. Pat. No. 4,875,259 (Appeldorn). In this type of fastener, the tips of the protrusions are not expanded or headed. The bond is created by the frictional forces generated between contacting surfaces of the intermeshing protrusions where the surfaces are optically smooth flats. Additional examples of fasteners in this grouping can be found in U.S. Pat. No. 5,071,363 (Reylek et al.); U.S. Pat. No. 5,088,164 (Wilson et al.); U.S.
- the non-attachment region 22 comprises an annular region circumscribing the entire perimeter of the second major surface 14. This arrangement eliminates the need for the user to find the particular location of the non-attached portion of the abrasive article 4 during the removal process.
- the user can grasp the abrasive article 4 at any location along the entire circumference of the conversion pad 8. It will be recognized, however, that the non-attachment region 22 may comprise a variety of shapes and sizes so long as it includes an edge portion of the first major surface
- Figs. 3a and 3b show two possible alternate arrangements of the non-attachment region 22.
- the non-attachment region 22 comprises a semi-circular region defined by an arc extending along a length of the circumference of the conversion pad 8 and a line extending between the opposite ends of the arc.
- Fastening elements 26 are provided on the remainder of the surface 14 which comprises the attachment region 20.
- the non-attachment region 22 comprises a pie-shaped slice of the first major surface 14.
- the remaining attachment region 20 is provided with fastening elements 26.
- the non- attachment region 22 may be formed by modifying the fastening elements 26 in the non- attachment region 22 by removing, crushing, bending, melting or otherwise altering the structure of the fastening elements 26 themselves to inhibit their ability to attach to an associated mating surface 28.
- the non-attachment region 22 may also be formed by covering the fastening elements 26 with a sheet material 30 to prevent the fastening elements 26 from attaching to the associated mating surface 28.
- the sheet material 30 may be, for example, a sheet of polymeric material including an adhesive surface that is adhesively affixed to the terminal ends 32 of the fastening elements 26
- Figs. 5a and 5b show another embodiment in which the non-attachment region 22 is formed by coating the fastening elements 26 with a hardenable liquid 34, such as an epoxy, that fills the open space around the fastening elements 26 up to the height of the hook portion of the fastening elements 26, and thereby prevents the fastening elements 26 from attaching to the associated mating surface 28.
- the non-attachment region 22 may also be created by simply forming the non- attachment region 22 without any fastening elements 26.
- the non-attachment region 22 it may be desirable to build up the non-attachment region 22 so it has the same height as the attachment region 20, whereby the attachment region and non-attachment region are essentially coplanar. As shown in Figs. 6a and 6b, this can be accomplished by providing the non-attachment region 22 with a lip or ridge 36. As illustrated, the lip 36 is formed by attaching a piece of compressible resilient foam to the non-attachment region 22 of the first major surface 14. Alternatively, the lip 36 may be molded integrally as part of the conversion pad 8.
- the attachment region 20 may comprise adhesive and the non-attachment region 22 may comprise a non-adhesive area.
- a suitable adhesive is Post-It® Note brand repositionable adhesive available from the 3M Company, St. Paul, MN. If the entire first major surface 14 of the conversion pad 8 is initially adhesive, the non-attachment region 22 may be rendered non-adhesive using a conventional treatment such as by coating it with a suitable film, paper, powder, foam or ink.
- the non-attachment region 22 may be made non-adhesive by simply not coating the non-attachment region 22 with adhesive. It will be recognized that the non-attachment region 22 in the various embodiments of the invention, but does not necessarily, completely eliminate attachment between the abrasive article 4 and the conversion pad 8.
- the non-attachment region 22 need only inhibit attachment between the abrasive article 4 and conversion pad 8 to a sufficient degree to allow a user to readily separate the abrasive article 4 from the conversion pad 8 in the area of the non-attachment region 22 so the user can grasp the abrasive article 4 to effect removal of the abrasive article 4 from the attachment region 20 of the conversion pad 8.
- the connection formed between the non-attachment region 22 and the associated mating surface 28 is weaker than the connection formed between the attachment region 22 and the associated mating surface 28. That is, the force required to separate the abrasive article 4 from the conversion pad 8 is less in the non- attachment region 22 than in the attachment region 20.
- the abrasive article 4 is preferably not attached to the conversion pad 8 in the non-attachment region, or is only loosely attached, thereby allowing a user to readily separate an edge portion of the abrasive article 4 from the conversion pad 8.
- the separated edge portion can, in turn, be firmly grasped by the user and serves as a starting point for generating a peel force that separates attachment region 22 from the associated mating surface 28.
- Fig. 8 illustrates the removal of the abrasive article 4 from the conversion pad 8 shown in Figs. 1 and 2.
- the abrasive article 4 that overlaps the annular circumferential edge portion of the conversion pad 8, which comprises the non-attachment region 22, is either not attached to the non-attachment region 22 or is only loosely attached thereto, thereby allowing a user to use his or her hand 38 to grasp the edge portion of the abrasive article 4 at any point along the circumference of the abrasive article 4. The user can then peel the abrasive article 4 away from the attachment region 20 to completely separate the abrasive article 4 from the conversion pad 8.
- Figs. 9a and 9b show another embodiment of the invention in which the attachment system 118 is provided on the abrasive article 104 instead of the conversion pad 8.
- the first major surface 140 of the abrasive article 104 includes an interior attachment region 120 and an annular peripheral non-attachment region 122.
- the attachment region 120 includes attachment material 124 for removably connecting the abrasive article 104 with the conversion pad 8.
- the attachment material 124 comprises loop-type fabric 129.
- Other attachment material such as those described previously with respect to attachment material 24 and associated mating surface 28 may be used.
- the attachment region 120 may comprise an adhesive and that the non- attachment region 122 may comprise a non-adhesive region.
- a suitable adhesive is Post- It® Note brand repositionable adhesive available from the 3M Company, St. Paul, MN.
- the non-attachment region 122 region comprises an annular region extending around the entire perimeter of the first major surface 140.
- the non-attachment region 122 may include attachment material 124 that has been covered, coated, or otherwise altered to inhibit attachment of the non-attachment region 122 with an associated mating surface on the conversion pad in a manner similar to that described above with non-attachment region 22 of the conversion pad 8.
- the non-attachment region 122 may also be created by simply forming the non-attachment region 122 without attachment material 124 or by removing the attachment material 124 from a selected region or regions of the abrasive article 104 first major surface 140. It will be apparent to those of ordinary skill in the art that various changes and modifications may be made without deviating from the inventive concept set forth above.
- the abrasive article and conversion pad may have a variety of sizes and shapes including a square, a triangle, a rectangle an oval, a pentagon, a hexagon, an octagon, and the like.
- any of the attachment systems described above as being provided on the conversion pad may be provided on the abrasive article. That is, the arrangement of the attachment system 18 and the associated mating surface 28 may be reversed.
- the scope of the present invention should not be limited to the structures described in this application, but only by the structures described by the language of the claims and the equivalents of those structures. "
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002563171A CA2563171A1 (en) | 2004-04-08 | 2005-03-14 | Attachment system for a sanding tool |
EP05729393A EP1742769A1 (en) | 2004-04-08 | 2005-03-14 | Attachment system for a sanding tool |
JP2007507325A JP2007532329A (en) | 2004-04-08 | 2005-03-14 | Mounting system for sanding tools |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/821,071 | 2004-04-08 | ||
US10/821,071 US8002612B2 (en) | 2004-04-08 | 2004-04-08 | Attachment system for a sanding tool |
Publications (1)
Publication Number | Publication Date |
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WO2005102607A1 true WO2005102607A1 (en) | 2005-11-03 |
Family
ID=34963602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/008574 WO2005102607A1 (en) | 2004-04-08 | 2005-03-14 | Attachment system for a sanding tool |
Country Status (6)
Country | Link |
---|---|
US (1) | US8002612B2 (en) |
EP (1) | EP1742769A1 (en) |
JP (1) | JP2007532329A (en) |
CN (1) | CN1964818A (en) |
CA (1) | CA2563171A1 (en) |
WO (1) | WO2005102607A1 (en) |
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WO2018087194A1 (en) * | 2016-11-10 | 2018-05-17 | Bayerische Motoren Werke Aktiengesellschaft | Grinding element and grinding apparatus |
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2004
- 2004-04-08 US US10/821,071 patent/US8002612B2/en not_active Expired - Fee Related
-
2005
- 2005-03-14 EP EP05729393A patent/EP1742769A1/en not_active Withdrawn
- 2005-03-14 CA CA002563171A patent/CA2563171A1/en not_active Abandoned
- 2005-03-14 WO PCT/US2005/008574 patent/WO2005102607A1/en active Application Filing
- 2005-03-14 CN CNA2005800189065A patent/CN1964818A/en active Pending
- 2005-03-14 JP JP2007507325A patent/JP2007532329A/en not_active Withdrawn
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EP0112405A1 (en) * | 1982-12-24 | 1984-07-04 | Hans J. Fabritius | Attaching element to be employed in grinding and polishing machines |
DE4339110A1 (en) * | 1993-11-16 | 1995-05-18 | Koltec Ag | Holder for fleece polishing discs |
WO1995019242A1 (en) * | 1994-01-13 | 1995-07-20 | Minnesota Mining And Manufacturing Company | Abrasive article, method of making same, and abrading apparatus |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009099758A2 (en) | 2008-01-30 | 2009-08-13 | 3M Innovative Properties Company | Method, apparatus, and system using adapter assembly for modifying surfaces |
EP2262613A2 (en) | 2008-01-30 | 2010-12-22 | 3M Innovative Properties Company | Method, apparatus, and system using adapter assembly for modifying surfaces |
EP2262613A4 (en) * | 2008-01-30 | 2014-08-27 | 3M Innovative Properties Co | Method, apparatus, and system using adapter assembly for modifying surfaces |
US20170304996A1 (en) * | 2014-11-26 | 2017-10-26 | 3M Innovative Properties Company | Abrasive Articles, Assemblies, and Methods with Gripping Material |
US11351654B2 (en) * | 2014-11-26 | 2022-06-07 | 3M Innovative Properties Company | Abrasive articles, assemblies, and methods with gripping material |
WO2018087194A1 (en) * | 2016-11-10 | 2018-05-17 | Bayerische Motoren Werke Aktiengesellschaft | Grinding element and grinding apparatus |
Also Published As
Publication number | Publication date |
---|---|
JP2007532329A (en) | 2007-11-15 |
CA2563171A1 (en) | 2005-11-03 |
CN1964818A (en) | 2007-05-16 |
US8002612B2 (en) | 2011-08-23 |
EP1742769A1 (en) | 2007-01-17 |
US20050227600A1 (en) | 2005-10-13 |
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