US4122966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sandwich panel box structure
Assignee: Winnebago Industries Inc
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Filing: 1975-04-30
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Granted: 1978-10-31
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Expires: 1995-04-30
Abstract
Abstract A fifth wheel trailer coupled to a pickup truck. The trailer has a wheel supported frame carrying a box having a generally horizontal floor and upright side and end walls. The walls are laminated panels having an outer sheet metal skin, an inner sheet metal skin and a core comprising a plurality of side-by-side plywood sheets located between the outer skin and the inner skin. Bonding materials secure the inside surfaces of the outer skin and inner skin to the plywood sheets and the plywood sheets to each other. Stakes secured to the walls are attached to the peripheral edges of the platform with hook bolts.
Inventors
- 👤 Michael O. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:25
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/06; B62D27/00; B62D27/06; B62D27/065; B62D33/00; B62D33/02; B62D33/023
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
162 words
A box assembly for vehicles carrying bulk material and the like, comprising, a peripheral frame including a substantially planar top wall portion and a bottom wall portion spaced therefrom, a floor mounted on said frame therewithin, a plurality of substantially vertical front, side, and rear end walls seated upon and extending upwardly from said frame top wall portion, thereby to define with said floor a box, a plurality of upright stakes, first fastening means securing said walls to said stakes, said frame top wall portion having holes therein at intervals therealong for receiving the lower ends of said stakes therethrough and with said stake lower ends in spaced relation to said frame bottom wall portion thereby to seat said walls secured thereto on said frame top wall portion, and, second fastening means extending between said frame bottom wall portion and each said stake lower end securing said stakes to said frame with said walls urged firmly against said frame top wall portion.
Claim 2
Dependent Claim
162 words
A box assembly for vehicles carrying bulk material and the like, comprising, a peripheral frame including a substantially planar top wall portion and a bottom wall portion spaced therefrom, a floor mounted on said frame therewithin, a plurality of substantially vertical front, side, and rear end walls seated upon and extending upwardly from said frame top wall portion, thereby to define with said floor a box, a plurality of upright stakes, first fastening means securing said walls to said stakes, said frame top wall portion having holes therein at intervals therealong for receiving the lower ends of said stakes therethrough and with said stake lower ends in spaced relation to said frame bottom wall portion thereby to seat said walls secured thereto on said frame top wall portion, and, second fastening means extending between said frame bottom wall portion and each said stake lower end securing said stakes to said frame with said walls urged firmly against said frame top wall portion.
Claim 3
Dependent Claim
38 words
The assembly of claim 1 wherein said substantially vertical walls comprise respectively an outer sheet metal skin, an inner sheet metal skin, a core including a plurality of side-by-side plywood sheets, and bonding means securing said sheets together.
Claim 4
Dependent Claim
41 words
The assembly of claim 1 wherein said rear end wall has a center panel having a bottom opening, means detachably securing said center panel to said end wall, and a gate movably mounted to said center panel to control said opening.
Claim 5
Dependent Claim
46 words
The assembly of claim 1 wherein said stakes are of tubular form having a bore therethrough and said first fastening means includes an elongated bar received in said bore for threaded reception of a plurality of bolts extending from said panels through apertures in said stakes.
Claim 6
Dependent Claim
49 words
The assembly of claim 1 wherein said second fastening means includes a bolt having a laterally projecting head extending through a lateral slot in each stake, and a threaded extension on said bolt extending through a slot in said frame bottom wall portion and having a nut threaded thereon.
References Cited (Backward Citations)
US1135826A
Cited
US784159A
Cited
US1022266A
Cited
US1355253A
Cited
US1632747A
Cited
US1829169A
Cited
US2230898A
Cited
US2208618A
Cited
US2258203A
Cited
US2382761A
Cited
US2451880A
Cited
US2491415A
Cited
US2623778A
Cited
US2944492A
Cited
US2994395A
Cited
US3363391A
Cited
US3511737A
Cited
US3817569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-30 | 1982-05-01 | 1982-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-30 | 1986-05-01 | 1986-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-30 | 1990-05-01 | 1990-10-31 | $7700.00 | Window Closed / Lapsed |