US3694012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforcing bar coupling
Assignee: Erico International Corp
•
Filing: 1969-11-04
•
Granted: 1972-09-26
•
Expires: 1989-11-04
Abstract
Abstract A coupling for concrete reinforcing and like bar particularly suitable for compressive loading which comprises a generally Ushape element adapted to embrace the butted ends of such bar with transverse clamp straps extending between the legs of such element being individually tightenable so that the coupling can be secured first to one bar and then the other.
Inventors
- 👤 Leonard Gelfand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:35
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/16; E04C5/162; E04C5/163; E04C5/165; Y; Y10; Y10T; Y10T403/00; Y10T403/57; Y10T403/5741; Y10T403/5761; Y10T403/5786
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
91 words
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.
Claim 2
Dependent Claim
91 words
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.
Claim 3
Dependent Claim
23 words
A coupling as set forth in claim 1 wherein said transverse clamps are hooked in vertically elongated apertures in such tangentially extending leg.
Claim 4
Dependent Claim
23 words
A coupling as set forth in claim 1 wherein said transverse clamps are secured to said radially extending flange leg by threaded fasteners.
Claim 5
Dependent Claim
28 words
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.
Claim 6
Dependent Claim
22 words
A coupling as set forth in claim 3 including elongated slots extending longitudinally of said transverse clamps through which said fasteners extend.
Claim 7
Dependent Claim
31 words
A coupling as set forth in claim 1 wherein said transverse clamps are symmetrically arranged longitudinally of said member whereby said joint can be partially assembled on one bar end only.
Claim 8
Dependent Claim
31 words
A coupling as set forth in claim 1 wherein the opposite side of such bars engaged by said clamps is substantially open to permit concrete intrusion into the coupling in use.
Claim 9
Dependent Claim
25 words
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.
References Cited (Backward Citations)
US1193642A
Cited
US847620A
Cited
US943469A
Cited
US1857022A
Cited
GB489838A
Cited
US3141688A
Cited
US3340667A
Cited
US3452375A
Cited
US3554583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |