US3767158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete form construction
Assignee: FLEXICORE CO
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Filing: 1971-03-29
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Granted: 1973-10-23
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Expires: 1991-03-29
Abstract
Abstract A concrete from of the type comprising abutting, coplanar panels connected together in edge-to-edge abutting relation to form inner and outer from walls for the pouring of concrete therebetween, the panels being detachably connected together by pivotal latch arms and pins on adjacent panel ends and plural tie rods extending between the inner and outer panels at the junctures of pairs of side-by-side panels. The latch arms and pins are carried on metal straps secured to the outside faces of the panels, the straps being recessed at the panel edges to lie flush with the inner faces of the panels where the tie rods are carried. The tie rods are circular in cross-section and are carried by the recessed strap to break off inside the concrete wall by a single twist at their ends.
Inventors
- 👤 G Mikus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:38
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/04; E04G17/047; E04G17/001; E04G17/06; E04G17/075; E04G17/0751; E04G17/0754
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
129 words
A concrete form comprising a panel of generally rectangular configuration having top and bottom edges and first and second side edges, a cut-out notch in at least one of said side edges between said top and bottom edges, said notch extending inwardly from said side edge from the outer face of said panel to its inner face, means adapted to receive and hold a tie bar against lateral movement with respect to said panel, said means extending flush with the inner face of said panel in said notch from the inner end of said notch to the side edge of said panel, and latch means on the outer panel face adjacent said side edge near said tie bar holding means for latching said panel to a similar, abutting panel.
Claim 2
Dependent Claim
129 words
A concrete form comprising a panel of generally rectangular configuration having top and bottom edges and first and second side edges, a cut-out notch in at least one of said side edges between said top and bottom edges, said notch extending inwardly from said side edge from the outer face of said panel to its inner face, means adapted to receive and hold a tie bar against lateral movement with respect to said panel, said means extending flush with the inner face of said panel in said notch from the inner end of said notch to the side edge of said panel, and latch means on the outer panel face adjacent said side edge near said tie bar holding means for latching said panel to a similar, abutting panel.
Claim 3
Dependent Claim
24 words
A concrete form as set forth in claim 1 wherein said notch and tie bar holding means are provided at both said side edges.
Claim 4
Dependent Claim
20 words
A concrete form as set forth in claim 1 wherein said tie bar holding means comprises an elongate metal strap.
Claim 5
Dependent Claim
81 words
A concrete form as set forth in claim 3 wherein strap comprises a first portion extending along and secured to the outer face of said panel, a second portion integral with said first portion extending in said notch from the outer face of the panel to its inner face, and a third portion integral with said second portion extending in said notch flush with the inner face of said panel from said second portion to the side edge of said panel.
Claim 6
Dependent Claim
23 words
A concrete form as set forth in claim 4 further comprising a slot in said third strap portion for receiving said tie bar.
Claim 7
Dependent Claim
68 words
A concrete form as set forth in claim 1 wherein said latch means comprises a latch arm pivotally carried on the outer face of said panel for pivotal movement past the side edge of said panel, said arm having first and second slots therein extending from one edge, said slots respectively engaging said tie bar and a latch pin on an adjacent panel upon pivoting of said arm.
References Cited (Backward Citations)
US2818629A
Cited
US3055076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |