US3593864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-unloading trailer
Assignee: CCI Corp
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Filing: 1969-12-04
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Granted: 1971-07-20
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Expires: 1989-12-04
Abstract
Abstract A trailer having upstanding side and front walls includes directly over the top of the floor thereof a first endless conveyor belt, the actuation of which moves the material received thereon rearwardly from the trailer during unloading. In one embodiment of the invention, a second belt is interposed between the floor and the first conveyor belt for reducing friction between thereby increasing the load capabilities of the trailer. In a second embodiment of the invention, pressurized air is forced upwardly through the floor to raise the endless belt therefrom in order to increase the load capabilities of the trailer.
Inventors
- 👤 William H Moser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:30
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/36; B60P1/38
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
275 words
A self-unloading cargo body to be carried by a vehicle frame including a pair of spaced apart, longitudinal support members comprising: a body including a substantially flat, load supporting floor, opposed sidewalls and a front wall; said body further including a plurality of transverse spaced apart crossmembers attached to said frame and supporting said floor above said frame, each of said crossmembers defining two spaced apart elongated horizontally disposed slots; a first endless conveyor mounted in said body in association with the floor thereof, said first conveyor comprising: a pair of outer rollers transversely received on said body in laterally spaced relationship, and an endless belt supported by said rollers such that the upper run thereof passes directly over said floor of said body and said lower run passes beneath said floor through one of said horizontally disposed slots in said crossmembers; a second endless conveyor mounted in said body in association with said first conveyor, said second conveyor comprising: a pair of laterally spaced inner rollers transversely received on said body inwardly of said outer rollers; and an inner endless belt supported by said inner rollers such that the upper flight thereof passes directly beneath the upper flight of first belt and the lower flight there passes beneath said floor throuGh the other of said horizontally disposed slots in said crossmembers; and driving means coupled to at least one of said outer rollers for causing travel of said outer endless belt whereupon frictional contact between the bottom side of said upper flight of said outer belt and the top side of said upper flight of said inner belt effects travel of said lower belt.
Claim 2
Dependent Claim
275 words
A self-unloading cargo body to be carried by a vehicle frame including a pair of spaced apart, longitudinal support members comprising: a body including a substantially flat, load supporting floor, opposed sidewalls and a front wall; said body further including a plurality of transverse spaced apart crossmembers attached to said frame and supporting said floor above said frame, each of said crossmembers defining two spaced apart elongated horizontally disposed slots; a first endless conveyor mounted in said body in association with the floor thereof, said first conveyor comprising: a pair of outer rollers transversely received on said body in laterally spaced relationship, and an endless belt supported by said rollers such that the upper run thereof passes directly over said floor of said body and said lower run passes beneath said floor through one of said horizontally disposed slots in said crossmembers; a second endless conveyor mounted in said body in association with said first conveyor, said second conveyor comprising: a pair of laterally spaced inner rollers transversely received on said body inwardly of said outer rollers; and an inner endless belt supported by said inner rollers such that the upper flight thereof passes directly beneath the upper flight of first belt and the lower flight there passes beneath said floor throuGh the other of said horizontally disposed slots in said crossmembers; and driving means coupled to at least one of said outer rollers for causing travel of said outer endless belt whereupon frictional contact between the bottom side of said upper flight of said outer belt and the top side of said upper flight of said inner belt effects travel of said lower belt.
Claim 3
Dependent Claim
47 words
A cargo body as in claim 1 including driving means coupled to at least one of said inner rollers to cause travel of said inner endless belt; and means coupled to said inner and outer rollers for synchronizing said travel of said inner and outer endless rollers.
Claim 4
Dependent Claim
50 words
A cargo body as in claim 1 wherein: said outer rollers have bonded thereto on the outer surface thereof lagging material providing a higher coefficient of friction between said roller and said outer endless belt than the coefficient of friction between said outer endless belt and said inner endless belt.
References Cited (Backward Citations)
US3477558A
Cited
US3481647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |