US3880415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cantilevered internal shoring
Assignee: Fruehauf Corp
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Filing: 1972-05-01
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Granted: 1975-04-29
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Expires: 1992-05-01
Abstract
Abstract A trailer body of elongated rectangular cross section with inner and outer thin sheets over the top, sides and front end is insulated and reinforced by the application of foamable plastic between the sheets after assembly. To prevent the sheets from moving out of spaced parallel planes, shoring in the nature of backup plates are applied to the inner and outer wall, floor and roof surfaces to resist any tendency to expand under pressure developed during the foaming operation. The inner shoring plates are carried on a cantilever frame and are moved upwardly and sidewardly to cover the internal roof sheets and those at the sides and front end of the body.
Inventors
- 👤 Richard T Fujioka
- 👤 Gerald A Wooldridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:58
CPC Classifications
B; B62; B62D; B62D29/00; B62D29/04; B62D33/00; B62D33/04; B62D33/048
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
In a shoring structure for backing up the inner walls of a trailer body at the sides and roof thereof, a cantilever supported horizontally extending frame, said frame being of rectangular form with the body disposed thereover from the extending end, means on the frame for supporting vertically and laterally movable arms, shoring plates on said arms at the sides and top movable outwardly against the inner surface of the walls and roof by said arms, said side shoring plates embody an upper and lower section having spaced oppositely extending members disposed in coplanar relation to each other and said sections, said upper section being connected to said vertically movable arms for upward movement therewith.
Claim 2
Dependent Claim
115 words
In a shoring structure for backing up the inner walls of a trailer body at the sides and roof thereof, a cantilever supported horizontally extending frame, said frame being of rectangular form with the body disposed thereover from the extending end, means on the frame for supporting vertically and laterally movable arms, shoring plates on said arms at the sides and top movable outwardly against the inner surface of the walls and roof by said arms, said side shoring plates embody an upper and lower section having spaced oppositely extending members disposed in coplanar relation to each other and said sections, said upper section being connected to said vertically movable arms for upward movement therewith.
Claim 3
Dependent Claim
30 words
In a shoring structure as recited in claim 1, wherein outer shoring plates are supported for movement into engagement with ouTer surfaces at the sides and roof of the body.
Claim 4
Dependent Claim
43 words
In a shoring structure as recited in claim 2, wherein drive means are provided within the frame for moving the shoring plates outwardly and inwardly and upwardly and downwardly to and from the internal surfaces at the sides and roof of the body.
Claim 5
Dependent Claim
30 words
In a shoring structure as recited in claim 3, wherein ram means support at least some of the outer shoring plates for moving them toward and away from the body.
Claim 6
Dependent Claim
40 words
In a shoring structure as recited in claim 3, wherein the outer shoring plates are hinged together at the top and sides and supported for movement into and from engagement with the outer roof and side surfaces of the body.
Claim 7
Dependent Claim
113 words
In a shoring structure for backing up the inner walls of a trailer body at the sides and roof thereof, an elongated frame, support means at one end of said frame, a base supporting structure for said support means which supports said frame in cantilever, means for raising said frame relative to said base supporting structure, side and top shoring plates supported on said frame at the sides and top thereof for movement outwardly and upwardly thereof, said side shoring plates having top and bottom sections containing nested extending coplanar sections, and means supporting said top sections for movement upwardly relative to the bottom sections as the sections move relative to each other.
Claim 8
Dependent Claim
113 words
In a shoring structure for backing up the inner walls of a trailer body at the sides and roof thereof, an elongated frame, support means at one end of said frame, a base supporting structure for said support means which supports said frame in cantilever, means for raising said frame relative to said base supporting structure, side and top shoring plates supported on said frame at the sides and top thereof for movement outwardly and upwardly thereof, said side shoring plates having top and bottom sections containing nested extending coplanar sections, and means supporting said top sections for movement upwardly relative to the bottom sections as the sections move relative to each other.
Claim 9
Dependent Claim
51 words
In a shoring structure as recited in claim 6, wherein said supporting means for the top sections has outwardly moving members, and outwardly moving members on said frame for supporting the bottom sections of the side plates, said top sections of the side shoring plates being movable outwardly and upwardly simultaneously.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |