US3280529A - Spacer for concrete reinforcing bars - Google Patents

Spacer for concrete reinforcing bars Download PDF

Info

Publication number
US3280529A
US3280529A US368911A US36891164A US3280529A US 3280529 A US3280529 A US 3280529A US 368911 A US368911 A US 368911A US 36891164 A US36891164 A US 36891164A US 3280529 A US3280529 A US 3280529A
Authority
US
United States
Prior art keywords
spacer
outer ring
inner ring
reinforcing bar
concrete
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US368911A
Inventor
Reuss Kuno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3280529A publication Critical patent/US3280529A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
    • E04C5/203—Circular and spherical spacers

Definitions

  • This invention relates to reinforced concrete, and more particularly to spacers for the reinforcement bars. More specifically, the invention relates to spacers of the type comprising an essentially cylindrical disk having an inner and an outer ring, and a radially extending and outwardly expanding mouth-like opening.
  • Spacers of this type which are intended to be clamped on the reinforcing bars, are known in a variety of embodiments. Preferably they are made of plastics.
  • the known spacers is one which has an octagonal configuration, smooth exterior walls, and a mouth-like opening formed by two tongues bent inwardly from the exterior mantle.
  • the inner recess serving to accommodate the reinforcing bar is formed by the free ends of the two tongues as well as by two clawlike stays extending from the exterior mantle inwardly, at right angles to the tongues; this inner recess has a square section. This construction provides for a strip-like contact only of the reinforcing bar with the wall segments of the inner recess.
  • a rib extends around the octagonal body.
  • the width of this rib is materially narrower than the height of the wall of the spacer, a spacer of this or any similar type can not be manufactured by an extrusion process, much as this mode of manufacture would be preferred for economic reasons.
  • the smooth outer faces of this kind of spacer lack the capacity of establishing and maintaining gripping contact with the surrounding concrete.
  • a still further object of the invention is the provision of a spacer particularly adapted for use in connection with reinforcing bars made of torsion steel.
  • the present invention contemplates to provide a spacer comprising an inner and an outer ring, and one or several stays or spokes extending therebetween.
  • the spokes are provided with curved or angular portions so they will withstand the compression or tensile stresses encountered when the spacer is slid onto the reinforcing bar, without any danger of rupture.
  • a stay is provided on the side of the inner ring remote from such opening, this stay ex- 338,529 Patented Oct. 25, 1956 tending toward the outer ring but terminating at a distance therefrom so its free end is disposed between the two rings.
  • This stay may also be provided on the outer ring and extend inwardly, its free end being disposed in proximity to but spaced from the inner ring.
  • the inner ring of the spacer according to the invention is provided, on the side remote from the mouth-like opening through which the reinforcing bar is inserted in the spacer, with a recess or groove adapted to be engaged by one of such ribs while the other extends in the mouth-like opening.
  • the spacers according to the invention lend themselves with particular advantage to being used in connection with vertically extending reinforcing bars.
  • an embodiment of the novel spacer is selected wherein the stays extending between the inner and outer rings are mounted on only one of these rings. This arrangement prevents water accumulating on the outer ring from penetrating via the stays, to the inner ring and hence to the reinforcing bar; instead, the water is absorbed by the concrete.
  • the reinforcing bar is protected against access of moisture, and any danger of rusting is effectively eliminated.
  • the spacer is clamped on the reinforcing bar in such a manner that the mouth-like opening is disposed remote from the wall of the form, so that once the form has been filled with concrete, the reinforcing bar is completely protected toward the outside.
  • FIG. 1 is a plan view of a spacer according to the invention.
  • FIG. 2 is a side view of the spacer shown in FIG. 1.
  • the spacer according to the invention is seen to comprise an outer ring 3 from which ribs 4 extend radially and outwardly.
  • a band-shaped piece of material comprising the guiding walls 5 defining between them, the mouth-like opening 9, and the inner ring 6 which, together form a keyhole into which the reinforcing rod is fitted.
  • Reinforcing spokes 8 enhancing the stability of the spacer, extend between the outer ring 3 and the inner ring 6.
  • These indented spokes 8, as shown in the drawing include curved portions which could also be angular which are needed for taking up such compression or tensile stresses as may be encountered when the spacer is clamped on the reinforcing steel bar.
  • the inner ring 6, on the side remote from opening 9, is provided in its interior, with a squared recess 10, and behind this squared recess and on the outside of the inner ring 6 there is provided a stay 7 which serves as a stop because the free end of said stay extends into the proximity of the outer ring 3.
  • This stay is effective to prevent the inner ring of the spacer from bending excessively at the base of the keyhole slot, under the influence of a large external downward or twisting load or stress which is transmitted to the spacer by the reinforcing bar.
  • the reinforcing bar (not shown in the drawing) is inserted in the spacer through the mouth-shaped opening 9.
  • this bar is made of torsion steel, one of the two helical ribs extending around the bar ena gages the groove while the other, opposite rib is accommodated in the opening 9.
  • a one-piece cylindrical disc spacer for the longitudinal alignment of reinforcing bars which are laid in concrete and tensioned to reinforce the concrete, said one-piece disc having an outer ring, an inner ring, said outer ring being interrupted by substantially straight guiding walls which project beyond the periphery of said outer ring, said guiding walls extending inwardly to define a mouth opening to said inner ring, said inner ring having its base portion which is remote from said opening squared and thereby forming with said guiding walls a keyhole with a squared base into which the reinforcing bar is fitted, spokes including indented portions disposed between and connecting said inner ring and said outer ring for taking up stresses when the spacer is clamped onto the reinforcing bar and a stay which projects away from the squared base of the keyhole slot into proximity with the inside of the outer ring to serve as a stop for preventing excessive bending of the keyhole slot under external stress.
  • Spacer according to claim 1 comprising ribs extending radially and outwardly from said outer ring, said ribs projecting beyond the periphery of said outer ring to the same extent as said guiding walls, to thereby aid in the longitudinal alignment of the reinforcing bar.
  • FRANK L. ABBOTT Primary Examiner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Reinforcement Elements For Buildings (AREA)

Description

1966 K. REUSS 3,280,529
SPACER FOR CONCRETE REINFORCING BARS Filed May 20, 1964 I m mi: 2' 5 4 /NVEN70/P KUNO REUSS Arr? United States Patent 3,280,529 SPACER FOR CONCRETE REINFORCING BARS Kuno Reuss, Funckstrasse 101, Wuppertal-Elberfeld, Germany Filed May 20, 1964, Ser. No. 368,911 Claims priority, application Germany, May 21, 1963, R 35,231 5 Claims. (Cl. 52-689) This invention relates to reinforced concrete, and more particularly to spacers for the reinforcement bars. More specifically, the invention relates to spacers of the type comprising an essentially cylindrical disk having an inner and an outer ring, and a radially extending and outwardly expanding mouth-like opening.
Spacers of this type which are intended to be clamped on the reinforcing bars, are known in a variety of embodiments. Preferably they are made of plastics. Among the known spacers is one which has an octagonal configuration, smooth exterior walls, and a mouth-like opening formed by two tongues bent inwardly from the exterior mantle. The inner recess serving to accommodate the reinforcing bar, is formed by the free ends of the two tongues as well as by two clawlike stays extending from the exterior mantle inwardly, at right angles to the tongues; this inner recess has a square section. This construction provides for a strip-like contact only of the reinforcing bar with the wall segments of the inner recess. In order to prevent individual spacers from being placed on the form difierentlyi.e. one with a side face, another with a corner edge-whereby the distance between reinforcing bars and form would be rendered nonuniform, a rib extends around the octagonal body. As the width of this rib, however, is materially narrower than the height of the wall of the spacer, a spacer of this or any similar type can not be manufactured by an extrusion process, much as this mode of manufacture would be preferred for economic reasons. Moreover, the smooth outer faces of this kind of spacer lack the capacity of establishing and maintaining gripping contact with the surrounding concrete.
It is an object of the present invention to provide an improved spacer which has none of the drawbacks associated with spacers of the prior art, but which combines a sound stability with yielding, springlike elasticity and which moreover, is firmly and securely gripped by the surrounding concrete.
It is a further object of this invention to provide a spacer which when disposed in horizontal position, protects the reinforcing bar from the access of moisture coming from the outside.
It is another important object of the present invention to provide a spacer which can be readily manufactured by an extrusion process.
A still further object of the invention is the provision of a spacer particularly adapted for use in connection with reinforcing bars made of torsion steel.
Other objects, and the manner in which the same are attained, will become apparent as this specification proceeds.
Pursuant to the above objectives, the present invention contemplates to provide a spacer comprising an inner and an outer ring, and one or several stays or spokes extending therebetween. Preferably, the spokes are provided with curved or angular portions so they will withstand the compression or tensile stresses encountered when the spacer is slid onto the reinforcing bar, without any danger of rupture. In order to avoid compression of the spacer in the direction of the opening in which the reinforcing bar is inserted, a stay is provided on the side of the inner ring remote from such opening, this stay ex- 338,529 Patented Oct. 25, 1956 tending toward the outer ring but terminating at a distance therefrom so its free end is disposed between the two rings. This stay may also be provided on the outer ring and extend inwardly, its free end being disposed in proximity to but spaced from the inner ring.
In order to accommodate a reinforcing bar made of torsion steel and therefore, comprising helical ribs extending around the bar, the inner ring of the spacer according to the invention is provided, on the side remote from the mouth-like opening through which the reinforcing bar is inserted in the spacer, with a recess or groove adapted to be engaged by one of such ribs while the other extends in the mouth-like opening.
The spacers according to the invention lend themselves with particular advantage to being used in connection with vertically extending reinforcing bars. In this event an embodiment of the novel spacer is selected wherein the stays extending between the inner and outer rings are mounted on only one of these rings. This arrangement prevents water accumulating on the outer ring from penetrating via the stays, to the inner ring and hence to the reinforcing bar; instead, the water is absorbed by the concrete. Thus the reinforcing bar is protected against access of moisture, and any danger of rusting is effectively eliminated. In order to secure this elfect the spacer is clamped on the reinforcing bar in such a manner that the mouth-like opening is disposed remote from the wall of the form, so that once the form has been filled with concrete, the reinforcing bar is completely protected toward the outside.
The relatively large cut-outs remaining intermediate the inner and outer rings, insure that in the region of the spacer, the concrete mass is not weakened appreciably.
In the drawing accompanying this application and forming part thereof, one embodiment of the invention is shown diagrammatically by way of example, with illustrative rather than limitative intent.
In the drawing:
FIG. 1 is a plan view of a spacer according to the invention, and
FIG. 2 is a side view of the spacer shown in FIG. 1.
Referring now to the drawing, wherein like elements are denoted by identical reference numerals, the spacer according to the invention is seen to comprise an outer ring 3 from which ribs 4 extend radially and outwardly. Joined to the outer ring 3 is a band-shaped piece of material comprising the guiding walls 5 defining between them, the mouth-like opening 9, and the inner ring 6 which, together form a keyhole into which the reinforcing rod is fitted. Reinforcing spokes 8 enhancing the stability of the spacer, extend between the outer ring 3 and the inner ring 6. These indented spokes 8, as shown in the drawing, include curved portions which could also be angular which are needed for taking up such compression or tensile stresses as may be encountered when the spacer is clamped on the reinforcing steel bar.
The inner ring 6, on the side remote from opening 9, is provided in its interior, with a squared recess 10, and behind this squared recess and on the outside of the inner ring 6 there is provided a stay 7 which serves as a stop because the free end of said stay extends into the proximity of the outer ring 3. This stay is effective to prevent the inner ring of the spacer from bending excessively at the base of the keyhole slot, under the influence of a large external downward or twisting load or stress which is transmitted to the spacer by the reinforcing bar.
The reinforcing bar (not shown in the drawing) is inserted in the spacer through the mouth-shaped opening 9. In the event this bar is made of torsion steel, one of the two helical ribs extending around the bar ena gages the groove while the other, opposite rib is accommodated in the opening 9.
I wish it to be understood that I do not desire to be limited to the precise details of construction, design and operation shown and described, as modifications within the scope of the following claims, which do not depart from the spirit of the invention nor sacrifice any advantage thereof, may occur to workers in this field.
I claim:
1. A one-piece cylindrical disc spacer for the longitudinal alignment of reinforcing bars which are laid in concrete and tensioned to reinforce the concrete, said one-piece disc having an outer ring, an inner ring, said outer ring being interrupted by substantially straight guiding walls which project beyond the periphery of said outer ring, said guiding walls extending inwardly to define a mouth opening to said inner ring, said inner ring having its base portion which is remote from said opening squared and thereby forming with said guiding walls a keyhole with a squared base into which the reinforcing bar is fitted, spokes including indented portions disposed between and connecting said inner ring and said outer ring for taking up stresses when the spacer is clamped onto the reinforcing bar and a stay which projects away from the squared base of the keyhole slot into proximity with the inside of the outer ring to serve as a stop for preventing excessive bending of the keyhole slot under external stress.
2. Spacer according to claim 1, wherein the indented portion of the spokes is a curved portion.
' portion of the spokes is an angular portion.
4. Spacer according to claim 1, comprising ribs extending radially and outwardly from said outer ring, said ribs projecting beyond the periphery of said outer ring to the same extent as said guiding walls, to thereby aid in the longitudinal alignment of the reinforcing bar.
5. A spacer for concrete reinforcing bars as claimed in claim 1, wherein said spokes interconnecting said outer and inner rings are displaced by about from said guiding walls, and said stay is mounted at the back of the squared base of the keyhole slot and is displaced by about 90 from said spokes.
References Cited by the Examiner,
UNITED STATES PATENTS 3,191,345 6/1965 Schwachula 52---689 FOREIGN PATENTS 612,486 1/ 1961 Canada.
805,712 5/ 1 Germany.
518,524 2/ 1940 Great Britain.
639,038 6/ 1951 Great Britain.
778,918 7/ 1957 Great Britain.
900,489 7/1962 Great Britain.
FRANK L. ABBOTT, Primary Examiner.
M. O. WARNECKE, Assistant Examiner.

Claims (1)

1. A ONE-PIECE CYLINDRICAL DISC SPACER FOR THE LONGITUDINAL ALIGNMENT OF REINFORCING BARS WHICH ARE LAID IN CONCRETE AND TENSIONED TO REINFORCE THE CONCRETE, SAID ONE-PIECE DISC HAVING AN OUTER RING, AN INNER RING, SAID OUTER RING BEING INTERRUPTED BY SUBSTANTIALLY STRAIGHT GUIDING WALLS WHICH PROJECT BEYOND THE PERIPHERY OF SAID OUTER RING, SAID GUIDING WALLS EXTENDING INWARDLY TO DEFINE A MOUTH OPENING TO SAID INNER RING, SAID INNER RING HAVING ITS BASE PORTION WHICH IS REMOTE FROM SAID OPENING SQUARED AND THEREBY FORMING WITH SAID GUIDING WALLS A KEYHOLE WITH A SQUARED BASE INTO WHICH THE REINFORCING BAR IS FITTED, SPOKES INCLUDING IDENTED PORTIONS DISPOSED BETWEEN AND CONNECTING SAID INNER RING AND SAID OUTER RING FOR TAKING UP STRESSES WHEN THE SPACER IS CLAMPED ONTO THE REINFORCING BAR AND A STAY WHICH PROJECTS AWAY FROM THE SQUARED BASE OF THE KEYHOLE SLOT INTO PROXIMITY WITH THE INSIDE OF THE OUTER RING TO SERVE AS A STOP FOR PREVENTING EXCESSIVE BENDING OF THE KEYHOLE SLOT UNDER EXTERNAL STRESS.
US368911A 1963-05-21 1964-05-20 Spacer for concrete reinforcing bars Expired - Lifetime US3280529A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER0035231 1963-05-21

Publications (1)

Publication Number Publication Date
US3280529A true US3280529A (en) 1966-10-25

Family

ID=7404558

Family Applications (1)

Application Number Title Priority Date Filing Date
US368911A Expired - Lifetime US3280529A (en) 1963-05-21 1964-05-20 Spacer for concrete reinforcing bars

Country Status (2)

Country Link
US (1) US3280529A (en)
FR (1) FR1377179A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360897A (en) * 1965-10-22 1968-01-02 Nat Lock Co Reinforcement chair
US3368320A (en) * 1965-06-28 1968-02-13 Lowery John Leslie Reinforcing bar and frame supports
EP0330519A1 (en) * 1988-02-25 1989-08-30 M.C.M. (Machine Sales) Ltd. Spacer wheel for steel cages
US5542785A (en) * 1993-09-28 1996-08-06 Lowtech Corporation, Inc. Rebar cage wheel spacer centralizer system for drilled shafts
USD382463S (en) * 1996-02-21 1997-08-19 Lowtech Corporation, Inc. Separable wheel
US5881519A (en) * 1997-04-17 1999-03-16 Newkirk; Christian R. Housing assembly
US6385938B1 (en) * 1999-10-19 2002-05-14 Norman W. Gavin Space for concrete reinforcement rods
US6553737B1 (en) * 2002-05-03 2003-04-29 Thomas J. Berg Method and apparatus to achieve consistent spacing between layers of modular construction material
US20040108419A1 (en) * 2002-11-26 2004-06-10 Yoshiyuki Sono Wheel-like wire holder
US20040182029A1 (en) * 2003-03-19 2004-09-23 Berg Thomas J. Method and apparatus to achieve consistent spacing between layers of modular construction
US20070094993A1 (en) * 2005-10-12 2007-05-03 Michael Azarin Reinforcement bar spacer wheel
US20090049789A1 (en) * 2005-04-26 2009-02-26 Juan Antonio Ferro De La Cruz Device for maintaining structural elements at a distance from one another
US20160040442A1 (en) * 2014-08-07 2016-02-11 Hawkeye Concrete Products Co. Concrete products locking cage spacer
USD822457S1 (en) * 2017-03-29 2018-07-10 BB & F Holding Company LLC Spray polyurethane foam jacket clip with additional support
USD822456S1 (en) * 2017-03-29 2018-07-10 BB & F Holding Company LLC Spray polyurethane foam jacket clip
USD939934S1 (en) * 2020-04-24 2022-01-04 Inland Concrete Products, Inc. Spacer wheel for poured concrete reinforcement members
USD944072S1 (en) * 2020-04-24 2022-02-22 Inland Concrete Products, Inc. Spacer wheel for poured concrete reinforcement members

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1042918A (en) * 1963-11-21 1966-09-14 Ferdinand William Berry Improvements in spacer members for the reinforcement of reinforced concrete

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB518524A (en) * 1938-08-24 1940-02-29 Burnaby Green Improved positioning devices for bars and rods used for concrete reinforcement
GB639038A (en) * 1948-07-07 1950-06-21 Broads Mfg Company Ltd Improvements in or relating to locating devices for reinforcing members in reinforced concrete structures and units
DE805712C (en) * 1949-07-30 1951-05-28 Obering Peter Fischer O H Spacer for reinforced concrete reinforcement
GB778918A (en) * 1954-07-16 1957-07-17 Alexander Feldmann Improvements in or relating to reinforced concrete structures
CA612486A (en) * 1961-01-10 Samuel And Son (Moulders) Limited Plastic distance piece for concrete reinforcing rods
GB900489A (en) * 1957-10-02 1962-07-04 Anders Bertil Aberg Distance piece for concrete-reinforcing rods
US3191345A (en) * 1960-02-11 1965-06-29 Ingeborg Schwachula K G Fa Spacer for building construction

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA612486A (en) * 1961-01-10 Samuel And Son (Moulders) Limited Plastic distance piece for concrete reinforcing rods
GB518524A (en) * 1938-08-24 1940-02-29 Burnaby Green Improved positioning devices for bars and rods used for concrete reinforcement
GB639038A (en) * 1948-07-07 1950-06-21 Broads Mfg Company Ltd Improvements in or relating to locating devices for reinforcing members in reinforced concrete structures and units
DE805712C (en) * 1949-07-30 1951-05-28 Obering Peter Fischer O H Spacer for reinforced concrete reinforcement
GB778918A (en) * 1954-07-16 1957-07-17 Alexander Feldmann Improvements in or relating to reinforced concrete structures
GB900489A (en) * 1957-10-02 1962-07-04 Anders Bertil Aberg Distance piece for concrete-reinforcing rods
US3191345A (en) * 1960-02-11 1965-06-29 Ingeborg Schwachula K G Fa Spacer for building construction

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3368320A (en) * 1965-06-28 1968-02-13 Lowery John Leslie Reinforcing bar and frame supports
US3360897A (en) * 1965-10-22 1968-01-02 Nat Lock Co Reinforcement chair
EP0330519A1 (en) * 1988-02-25 1989-08-30 M.C.M. (Machine Sales) Ltd. Spacer wheel for steel cages
US5542785A (en) * 1993-09-28 1996-08-06 Lowtech Corporation, Inc. Rebar cage wheel spacer centralizer system for drilled shafts
USD382463S (en) * 1996-02-21 1997-08-19 Lowtech Corporation, Inc. Separable wheel
US5881519A (en) * 1997-04-17 1999-03-16 Newkirk; Christian R. Housing assembly
US5927043A (en) * 1997-04-17 1999-07-27 Newkirk; Christian R. Housing assembly
US6385938B1 (en) * 1999-10-19 2002-05-14 Norman W. Gavin Space for concrete reinforcement rods
US6553737B1 (en) * 2002-05-03 2003-04-29 Thomas J. Berg Method and apparatus to achieve consistent spacing between layers of modular construction material
US7017867B2 (en) * 2002-11-26 2006-03-28 Orion Electric Co., Ltd. Wheel-like wire holder
US20040108419A1 (en) * 2002-11-26 2004-06-10 Yoshiyuki Sono Wheel-like wire holder
US20040182029A1 (en) * 2003-03-19 2004-09-23 Berg Thomas J. Method and apparatus to achieve consistent spacing between layers of modular construction
US20090049789A1 (en) * 2005-04-26 2009-02-26 Juan Antonio Ferro De La Cruz Device for maintaining structural elements at a distance from one another
US20070094993A1 (en) * 2005-10-12 2007-05-03 Michael Azarin Reinforcement bar spacer wheel
US7451579B2 (en) * 2005-10-12 2008-11-18 Concrete Accessories, Inc. Reinforcement bar spacer wheel
US20160040442A1 (en) * 2014-08-07 2016-02-11 Hawkeye Concrete Products Co. Concrete products locking cage spacer
US9745752B2 (en) * 2014-08-07 2017-08-29 Hawkeyepedershaab Concrete Technologies, Inc. Concrete products locking cage spacer
USD822457S1 (en) * 2017-03-29 2018-07-10 BB & F Holding Company LLC Spray polyurethane foam jacket clip with additional support
USD822456S1 (en) * 2017-03-29 2018-07-10 BB & F Holding Company LLC Spray polyurethane foam jacket clip
USD939934S1 (en) * 2020-04-24 2022-01-04 Inland Concrete Products, Inc. Spacer wheel for poured concrete reinforcement members
USD944072S1 (en) * 2020-04-24 2022-02-22 Inland Concrete Products, Inc. Spacer wheel for poured concrete reinforcement members

Also Published As

Publication number Publication date
FR1377179A (en) 1964-10-31

Similar Documents

Publication Publication Date Title
US3280529A (en) Spacer for concrete reinforcing bars
KR930001140B1 (en) Tie anchor for reinforced sandwich panels
US3257767A (en) Snap-on spacer positioner for reinforcement
US4389830A (en) Anchorage with accessories for attachment to walls, floors and ceilings
KR200191011Y1 (en) Insert anchor for pulling up concrete mass
US1755461A (en) Pole reenforcement
JPS5824027A (en) Reinforcing member for pressurizing anchor
KR102306687B1 (en) Slope concrete panel with composite fiber
US3153268A (en) Wire rope socket
US1065321A (en) Reinforcement of columns, ferroconcrete pillars, and the like.
US3439462A (en) Anchoring device of steel wire for prestressed concrete
US3110448A (en) Ball mills
US20030131553A1 (en) Non-metallic masonry tie
JP2004068364A (en) Reinforcement structure of opening of hinge zone
CN207032013U (en) A kind of bridge pier bracing means
JPS5817054Y2 (en) Reinforced spiral stirrup
US2794061A (en) Post with an insulator for an electric wire
US3077008A (en) Cooling tower stack assembly
EP0371538B1 (en) Foundation pile which is made up of a number of pile elements
CN214214213U (en) Skeleton and prefabricated component for prefabricated component
US2191217A (en) Building block
KR200490609Y1 (en) Safety caps for rebar
CN217897358U (en) Mounting structure of steel bar protection sleeve
KR930010049B1 (en) Spiral pipe
KR200454729Y1 (en) Earth anchor anchor fixture