Patent US3863878A successfully refreshed from Google Patents.
US3863878A
Expired / Lapsed
US
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Column-mounted shoring bracket assembly for overhead formwork
Assignee: General Electric Co
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Filing: 1973-06-04
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Granted: 1975-02-04
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Expires: 1993-06-04
Abstract
Abstract A column-mounted shoring bracket adapted for use in a concrete slab-supporting formwork beam during concrete-pouring operations, then lowering the formwork after slab completion so as to separate it from the slab, and finally permitting lateral withdrawal of the formwork from beneath the completed slab for purposes of reuse at a higher building level. A two-part bracket construction embodying a fixed part and a removable part enables the removable part to be shifted at will from story level to story level as building progresses.
Inventors
- 👤 R Kirk Gregory
- 👤 Richard T Dagiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:02
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/16
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
170 words
A shoring bracket adapted releasably to support a horizontal stringer forming a part of a concrete-receiving formwork-type pallet used in the erection of a multi-story building, said bracket comprising a two-part structure of a shelf part and a jack part, said shelf part being adapted for mounting it on a vertical column of the building and having an arm projecting outwardly from such column, said jack part including a base plate mountable on said arm, means for releasably securing said base plate to said arm, an elongated vertically extending jack screw having threaded engagement with the base plate and projecting upwardly thereabove, a frame mounted for swiveling movement on the upper end of said jack screw, a stringer-supporting roller carried by said frame and mounted for rotation about a horizontal axis, and an anti-torque connection extending between said frame and base plate and adapted to prevent rotational movement of the frame about the vertical axis of the jack screw when the latter is rotated for stringer raising or lowering purposes.
Claim 2
Dependent Claim
170 words
A shoring bracket adapted releasably to support a horizontal stringer forming a part of a concrete-receiving formwork-type pallet used in the erection of a multi-story building, said bracket comprising a two-part structure of a shelf part and a jack part, said shelf part being adapted for mounting it on a vertical column of the building and having an arm projecting outwardly from such column, said jack part including a base plate mountable on said arm, means for releasably securing said base plate to said arm, an elongated vertically extending jack screw having threaded engagement with the base plate and projecting upwardly thereabove, a frame mounted for swiveling movement on the upper end of said jack screw, a stringer-supporting roller carried by said frame and mounted for rotation about a horizontal axis, and an anti-torque connection extending between said frame and base plate and adapted to prevent rotational movement of the frame about the vertical axis of the jack screw when the latter is rotated for stringer raising or lowering purposes.
Claim 3
Dependent Claim
40 words
A shoring bracket as set forth in claim 1 and wherein said anti-torque connection comprises a vertically extending slide member fixedly secured at its upper end to the frame and projecting downwardly through a guide slot in the base plate.
Claim 4
Dependent Claim
35 words
A shoring bracket as set forth in claim 2 and wherein a fast pin projects through the lower end of said slide member and prevents removal of the slide member upwardly from the base plate.
Claim 5
Dependent Claim
48 words
A shoring bracket as set forth in claim 1 and wherein said frame embodies a pair of upstanding side plates and a roller shaft supported at its ends by said side plates, and the stringer-supporting roller is of a composite nature and is rotatably mounted on said shaft.
Claim 6
Dependent Claim
59 words
A shoring bracket as set forth in claim 4 and wherein said composite roller includes two cylindrical roller sections which are interposed between said side plates and are adapted to bear the load of said stringer, and an edge guide roller section disposed exteriorly of the frame and of a diameter greater than that of the cylindrical roller sections.
Claim 7
Dependent Claim
26 words
A shoring bracket as set forth in claim 5 and wherein said edge guide roller section is frusto-conical and has its small base facing said frame.
Claim 8
Dependent Claim
25 words
A shoring bracket as set forth in claim 6 and wherein said frame includes a central shaft-supporting plate which projects between said cylindrical roller sections.
Claim 9
Dependent Claim
28 words
A shoring bracket as set forth in claim 1 and including channel means along opposite sides of said base plate slidably receiving said arm in the channels thereof.
Claim 10
Dependent Claim
39 words
A shoring bracket as set forth in claim 8 and in which the releasable securing means is in the form of registering openings in said base plate and arm, respectively, and removable fast pin means insertable through said openings.
Claim 11
Dependent Claim
30 words
A shoring bracket as set forth in claim 9 and including enlarged diameter roller means adapted for engagement with said stringer to prevent derailing of the stringer from said roller.
References Cited (Backward Citations)
US2539323A
Cited
US1681731A
Cited
US3155051A
Cited
US3504879A
Cited
US3771753A
Cited
US3776499A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |