US3694012A - Reinforcing bar coupling - Google Patents
Reinforcing bar coupling Download PDFInfo
- Publication number
- US3694012A US3694012A US873834A US3694012DA US3694012A US 3694012 A US3694012 A US 3694012A US 873834 A US873834 A US 873834A US 3694012D A US3694012D A US 3694012DA US 3694012 A US3694012 A US 3694012A
- Authority
- US
- United States
- Prior art keywords
- coupling
- bars
- set forth
- bar
- leg
- 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
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 48
- 238000010168 coupling process Methods 0.000 title claims abstract description 48
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 48
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 33
- 239000004567 concrete Substances 0.000 claims abstract description 7
- 238000010276 construction Methods 0.000 description 6
- 239000011150 reinforced concrete Substances 0.000 description 2
- 101100008044 Caenorhabditis elegans cut-1 gene Proteins 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 241000282320 Panthera leo Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
-
- 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
- Y10T403/00—Joints and connections
- Y10T403/57—Distinct end coupler
- Y10T403/5741—Separate screw or pin-type connections
-
- 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
- Y10T403/00—Joints and connections
- Y10T403/57—Distinct end coupler
- Y10T403/5761—Interrupted periphery, e.g., split or segmental, etc.
- Y10T403/5786—Split
Definitions
- ABSTRACT held of Search A coupling for concrete reinforcing and like bar particularly suitable for compressive loading which comprises a generally U-shape element adapted to em- [56] References C'ted brace the butted ends of such bar with transverse UNITED STATES PATENTS clamp straps extending between the legs of such element being individually tightenable so that the 3,141,688 7/1964 Taylor et a1 ..24/279 X couplingcan be Secured first to one bar and then the 3,554,583 1/1971 Lowe ..287/110 other.
- awwamwag 6m REINFORCING BAR COUPLING This invention relates generally as indicated to a reinforcing bar coupling and more particularly to an improved reinforcing bar coupling and more particularly to an improved reinforcing bar coupling for concrete construction where substantially compressive loads only are involved.
- split metallic sleeves utilizing a wedge to contract the sleeve about the adjacent ends of reinforcing bars in concrete column construction have been employed.
- the reinforcing bars must be in place, the upper bar usually being held by a crane, and a heavy hammer must be employed to drive the wedge downwardly into its operative position. An ironworker then climbs the column, aligns the bars, and makes the coupling.
- special costly scafi'olding is required.
- a wedge-type splice requires support for the clamp, otherwise it may be driven down onto the lower bar.
- Such clamps may also require the use of a vice grip type of pliers or similar clamping tool to hold the clamp in place while it is being installed. Needless to say, once secured by the wedge, they are extremely difficult to remove and cannot usually be reused.
- reinforcing bar may be of the same nominal size, there can be considerable variation in diameter due to roll wear and other factors. Accordingly, it is desirable to provide a splice which can be independently tightened on each bar end. With the aforementioned wedge type lock it is possible to drive the clamp shut and still have a loose connection to one bar end, with no restraint other than the weight of the upper bar.
- Another important object is the provision of such coupling which can be secured first to the end of one bar and then quickly secured to the other.
- a further object is the provision of a reinforcing bar coupling having a vertically elongated generally U- shape member with a plurality of transverse clamps adapted to be connected between the legs of said member and individually tightened against a bar therein.
- Still another object is the provision of a reinforcing bar coupling utilizing a plurality of vertically spaced clamp stra s which may be individually tightened against the bar.
- a yet further object is the provision of a reinforcing bar coupling which can be quickly secured in place with the use 0s a lightweight tool such as a ratchet wrench.
- a still further object is the provision of a reinforcing bar coupling comprising an elongated U-shape clamp adapted to embrace the butted ends of reinforcing bar with a plurality of clamp straps bridging the legs of such clamp and secured thereto by special fasteners permitting the use of a ratchet wrench, for example.
- the invention comprises the features hereinafter fully described, the following description and the annexed drawing setting forth in detail a certain illustrative embodiment of the invention, this being indicative, however, of but one of the various ways in which the principles of the invention may be employed.
- FIG. 1 is a side elevation of a: reinforcing bar coupling in accordance with the present invention secured to the end of one bar to be joined;
- FIG. 2 is a view similar to FIG. 1 illustrating the second bar secured in place
- FIG. 3 is an enlarged horizontal section taken substantially on the line 33 of FIG. 2 showing the manner in which the clamp straps are secured to the elongated U-shape clamp element.
- FIGS. 1 through 3 10 illustrates the upper end of a reinforcing bar which is vertically disposed having square cut end 11. Such bar is provided with an outer surface pattern of ridges seen at 12 in conventional manner.
- a couplingshown generally at 14 is employed to secure the bar end 10 to bar end 15 disposed thereabove.
- bar end 15 is provided with a square cut end 16 which butts against the upper square cut 11 of the bar end 10.
- the coupling is particularly designed for reinforced concrete column construction for holding two reinforcing bars to be joined in axial alignment, the ends of the bars being square cut to transmit the compressive stress from one bar to the other.
- the coupling 14 comprises a main vertically elongated generally U-shape coupling element 20 adapted to embrace the reinforcing bar as seen more clearly in FIG. 3.
- the main body portion of the coupling element is of circular section thus to embrace the bar and the element includes vertically elongated legs 21 and 22.
- the leg 21 extends tangentially of the circular main body portion and is provided with a series of vertically spaced elongated apertures as seen at 24, 25, 26 and 27.
- the apertures 24 and 25 are spaced from each other the same distance as the apertures 26 and 27.
- the arrangement of the apertures is thus symmetrical with respect to the center of the clamping element.
- the clamping element may be provided with a single center aperture as seen at 29 in FIG. 1.
- the opposite leg 22 is bent approximately radially of the bar to form a substantially radially extending flange.
- Such flange is provided with a series of circular apertures indicated at 30 in FIG. 3 each corresponding to and having the same spacing as the elongated apertures 24 through 27 in the opposite leg of the clamping element.
- Secured to one side of the flange leg 22 and aligned with such apertures are relatively small nuts 31.
- Such nuts may be spot welded to the flange as indicated at 32. There are thus four such apertures and four such nuts, each being opposite the centers of the vertically elongated slots 24 through 27 in the opposite leg 21.
- a plurality of clamping straps or bars are provided adapted to bridge the legs of the element 20 as seen more clearly at 34, 35, 36 and 37.
- the configuration of the transverse clamping bars is seen perhaps more clearly in FIG. 3 and it will be appreciated that each such transverse bar includes a center curved or bent' in the form of a bolt.
- a washer as seen at 49 is provided.
- the washer 49 is built-in or connected to the bolt.
- the washer may be formed with the head in the foregoing operation to provide, for example, a flared head.
- the first few threads on the end of the bolt as seen at 50 may be normal threads permitting the bolt and washer assembly readily to be hand inserted through the slot 43, the aperture 30, and initially threaded into the nut 31.
- the remaining threads on the'bolt are imperfect or intentionally roughened to provide a degree of frictional resistance to the bolt turning within the nut. This permits the use of a relatively lightweight ratchet wrench for the final tightening of the bolt and nut.
- the frictional resistance permits the ratchet wrench to have its ratcheting action rather than just allowing the bolt to spin while it is being tightened.
- the transverse clamp bars will be brought tightly to bear against the surface of the reinforcing bars and and that the hook and eye connection of the opposite end of the clamp bar with the leg 21 provides a fulcrum at 52.
- the clamp element as well as the transverse bars will be brought tightly to bear against the outer surface of the reinforcing bar.
- the coupling may be secured to the upper end of the lower bar 10 and the fasteners 47 and 48 only fully tightened.
- the upper fasteners 45 and 46 may be merely initially only hand tightened.
- the erector may use the center aperture 29 as a guide for positioning the upper square cut 1 1 of the bar 10in the approximate middle of the coupling.
- a crane will then position the bar 15 such that its lower end may simply be inserted into the top of the upstanding coupling and when in such position, the upper fasteners 45 and 46 may quickly be tightened with such ratchet wrench to provide the final coupling of the bars as seen in FIG. 2.
- the coupling may be secured, for example, to the four corner bars as in FIG. 1 and the cage may then simply be lowered into position until the comer bars fit within the upstanding couplings on the ends of the lower bars. The top two fasteners are then tightened firmly to secure the cage in place. Additional couplings may then be added without the requirement of the crane to secure the cage. In this manner, it can be seen that the crane time required for the erection of the steel reinforcing bars is greatly reduced.
- a coupling for reinforcing and like bars comprising a vertically elongated and continuous U-shape member having two legs and being adapted embracingly to bear against one side of the butted ends of such bars, one leg terminating in a portion extending generally tangentially to said bars and the other leg terminating in a flange extending generally radially of said bars, and a plurality of relatively narrow transverse clamps connected between the tangential portion and flange of said legs and adapted to be individually tightened against the opposite side of such bars.
- a coupling as set forth in claim 3 including nuts secured to said radially extending flange leg whereby said fasteners may be inserted and tightened with one hand.
- a coupling as set forth in claim 3 including elongated slots extending longitudinally of said transverse clamps through which said fasteners extend.
- a coupling as set forth in claim 7 including at least two said transverse clamps engaging each bar end bridging the legs of said member.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Connection Of Plates (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US87383469A | 1969-11-04 | 1969-11-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3694012A true US3694012A (en) | 1972-09-26 |
Family
ID=25362421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US873834A Expired - Lifetime US3694012A (en) | 1969-11-04 | 1969-11-04 | Reinforcing bar coupling |
Country Status (7)
Country | Link |
---|---|
US (1) | US3694012A (de) |
JP (1) | JPS5016899B1 (de) |
BR (1) | BR7019577D0 (de) |
CA (1) | CA924924A (de) |
DE (1) | DE2045456A1 (de) |
FR (1) | FR2100593B1 (de) |
GB (1) | GB1297427A (de) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4764071A (en) * | 1986-02-14 | 1988-08-16 | Lawrence Ventura A | Quick-action fasteners |
US4850777A (en) * | 1986-06-23 | 1989-07-25 | Lawrence Ventura A | Quick-action fasteners |
WO1990015257A1 (en) * | 1989-06-09 | 1990-12-13 | Balach David M | Reinforcing bar coupling device |
US5379562A (en) * | 1993-02-01 | 1995-01-10 | Hohmann Ronald P | Flow-through cap and stirrup for reinforcement bars and method of use thereof |
US5383740A (en) * | 1993-08-02 | 1995-01-24 | Richmond Screw Anchor Company | Combination mechanical/grout sleeve coupling for concrete reinforcement bars |
US6532711B2 (en) * | 2001-02-07 | 2003-03-18 | Erico International Corporation | Reinforcing bar splice and method |
GB2405900B (en) * | 2003-09-10 | 2006-07-26 | Ellis Patents Ltd | Cable clamps |
US20060204329A1 (en) * | 2005-03-08 | 2006-09-14 | Costa Robert P | Concrete slab joint stabilizing system and apparatus |
US20060213039A1 (en) * | 2005-03-23 | 2006-09-28 | Franklin Fastener Company | Interlocked two-part clamp |
US9404258B2 (en) * | 2014-11-12 | 2016-08-02 | Jangpyoung Construction Co., LTD. | Reinforcing bar connector |
US10501895B2 (en) | 2017-08-01 | 2019-12-10 | Illinois Tool Works Inc. | Concrete slab joint stabilizer |
US11293182B2 (en) | 2016-09-12 | 2022-04-05 | Coupler Solutions Limited | Coupling device, associated parts and a method of use thereof |
US11840834B2 (en) | 2019-03-07 | 2023-12-12 | Illinois Tool Works Inc. | Linking device |
GB2624018A (en) * | 2022-11-04 | 2024-05-08 | Ellis Patents Holdings Ltd | Clamp assembly |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3265621A4 (de) * | 2015-03-02 | 2018-12-19 | Al-tuhami, Al-tuhami Abuzeid | Gitterträgerbewehrung und deren mechanische kopplerverbindungen für strukturbeton |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US847620A (en) * | 1906-05-26 | 1907-03-19 | Channing M Thompson | Hose-clamp. |
US943469A (en) * | 1909-03-05 | 1909-12-14 | George J Schade | Metal reinforcement for metal-reinforced columns, posts, and the like. |
US1193642A (en) * | 1916-08-08 | Clamp | ||
US1857022A (en) * | 1929-12-19 | 1932-05-03 | Hingley Thomas Prosser | Tube coupling |
GB489838A (en) * | 1938-01-07 | 1938-08-04 | Alfred Smallwood | A new or improved clamp for assembling scaffolding or the like |
US3141688A (en) * | 1961-01-09 | 1964-07-21 | Byron Jackson Inc | Stop collar |
US3340667A (en) * | 1964-01-13 | 1967-09-12 | Gateway Erectors Inc | Concrete structure with combination compression and tension reinforcement splices |
US3452375A (en) * | 1967-05-10 | 1969-07-01 | Eric G Gabbey | Process for producing self-locking screw threads |
US3554583A (en) * | 1969-08-18 | 1971-01-12 | Burton Delingpole & Co Ltd | Couplers for scaffold tubes |
-
1969
- 1969-11-04 US US873834A patent/US3694012A/en not_active Expired - Lifetime
-
1970
- 1970-03-17 CA CA077702A patent/CA924924A/en not_active Expired
- 1970-05-16 JP JP45041343A patent/JPS5016899B1/ja active Pending
- 1970-05-27 GB GB1297427D patent/GB1297427A/en not_active Expired
- 1970-06-08 BR BR219577/70A patent/BR7019577D0/pt unknown
- 1970-09-15 DE DE19702045456 patent/DE2045456A1/de active Pending
- 1970-09-22 FR FR7034333A patent/FR2100593B1/fr not_active Expired
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1193642A (en) * | 1916-08-08 | Clamp | ||
US847620A (en) * | 1906-05-26 | 1907-03-19 | Channing M Thompson | Hose-clamp. |
US943469A (en) * | 1909-03-05 | 1909-12-14 | George J Schade | Metal reinforcement for metal-reinforced columns, posts, and the like. |
US1857022A (en) * | 1929-12-19 | 1932-05-03 | Hingley Thomas Prosser | Tube coupling |
GB489838A (en) * | 1938-01-07 | 1938-08-04 | Alfred Smallwood | A new or improved clamp for assembling scaffolding or the like |
US3141688A (en) * | 1961-01-09 | 1964-07-21 | Byron Jackson Inc | Stop collar |
US3340667A (en) * | 1964-01-13 | 1967-09-12 | Gateway Erectors Inc | Concrete structure with combination compression and tension reinforcement splices |
US3452375A (en) * | 1967-05-10 | 1969-07-01 | Eric G Gabbey | Process for producing self-locking screw threads |
US3554583A (en) * | 1969-08-18 | 1971-01-12 | Burton Delingpole & Co Ltd | Couplers for scaffold tubes |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4764071A (en) * | 1986-02-14 | 1988-08-16 | Lawrence Ventura A | Quick-action fasteners |
US4850777A (en) * | 1986-06-23 | 1989-07-25 | Lawrence Ventura A | Quick-action fasteners |
WO1990015257A1 (en) * | 1989-06-09 | 1990-12-13 | Balach David M | Reinforcing bar coupling device |
US5379562A (en) * | 1993-02-01 | 1995-01-10 | Hohmann Ronald P | Flow-through cap and stirrup for reinforcement bars and method of use thereof |
US5383740A (en) * | 1993-08-02 | 1995-01-24 | Richmond Screw Anchor Company | Combination mechanical/grout sleeve coupling for concrete reinforcement bars |
US6532711B2 (en) * | 2001-02-07 | 2003-03-18 | Erico International Corporation | Reinforcing bar splice and method |
GB2405900B (en) * | 2003-09-10 | 2006-07-26 | Ellis Patents Ltd | Cable clamps |
US7334963B2 (en) * | 2005-03-08 | 2008-02-26 | Surface Dynamics, Inc. | Concrete slab joint stabilizing system and apparatus |
US20060204329A1 (en) * | 2005-03-08 | 2006-09-14 | Costa Robert P | Concrete slab joint stabilizing system and apparatus |
US20060213039A1 (en) * | 2005-03-23 | 2006-09-28 | Franklin Fastener Company | Interlocked two-part clamp |
US7540071B2 (en) * | 2005-03-23 | 2009-06-02 | Franklin Fastener Company | Interlocked two-part clamp |
WO2007061821A3 (en) * | 2005-11-17 | 2008-01-31 | Robert P Costa | Concrete slab joint stabilizing system and apparatus |
US9404258B2 (en) * | 2014-11-12 | 2016-08-02 | Jangpyoung Construction Co., LTD. | Reinforcing bar connector |
US11293182B2 (en) | 2016-09-12 | 2022-04-05 | Coupler Solutions Limited | Coupling device, associated parts and a method of use thereof |
US11332935B2 (en) | 2016-09-12 | 2022-05-17 | Coupler Solutions Limited | Coupling device, associated parts and a method of use thereof |
US11773595B2 (en) | 2016-09-12 | 2023-10-03 | Coupler Solutions Limited | Coupling device, associated parts and a method of use thereof |
US10501895B2 (en) | 2017-08-01 | 2019-12-10 | Illinois Tool Works Inc. | Concrete slab joint stabilizer |
US11840834B2 (en) | 2019-03-07 | 2023-12-12 | Illinois Tool Works Inc. | Linking device |
GB2624018A (en) * | 2022-11-04 | 2024-05-08 | Ellis Patents Holdings Ltd | Clamp assembly |
Also Published As
Publication number | Publication date |
---|---|
FR2100593A1 (de) | 1972-03-24 |
BR7019577D0 (pt) | 1973-02-22 |
CA924924A (en) | 1973-04-24 |
JPS5016899B1 (de) | 1975-06-17 |
DE2045456A1 (de) | 1971-05-13 |
FR2100593B1 (de) | 1977-01-21 |
GB1297427A (de) | 1972-11-22 |
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