US3687321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load carrying vehicle
Assignee: Stanray Corp
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Filing: 1970-03-24
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Granted: 1972-08-29
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Expires: 1990-03-24
Abstract
Abstract This invention relates to vehicles adapted to load and unload cargo and other material into and from aircraft. The present vehicle is provided with a loading platform which can be elevated, laterally adjusted and extended forwardly for alignment with an opening in the aircraft. Controls are provided to prevent abnormal contact or misalignment between the platform and aircraft as well as to automatically raise or lower the platform when the height of the opening above ground level varies due to loading or unloading.
Inventors
- 👤 Steven E Goodhart
- 👤 Alfred C Channels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:18
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
118 words
A load carrying vehicle including a chassis frame, a body adapted to be supported by said chassis frame, means for elevating said body, a platform, said body supporting said platform for lateral movement relative thereto, means for laterally moving said platform relative to said body, an extending bridge slidably supported forwardly on said platform, a pair of transversely spaced compressible spring means interposed between said platform and said extending bridge to urge said bridge forwardly relative to said platform, said spring means adapted to yield to rearwardly imposed pressure longitudinally of said extending bridge, means for limiting forward movement of said extending bridge, and means for compressing said spring means to maintain said extending bridge in retracted position.
Claim 2
Dependent Claim
118 words
A load carrying vehicle including a chassis frame, a body adapted to be supported by said chassis frame, means for elevating said body, a platform, said body supporting said platform for lateral movement relative thereto, means for laterally moving said platform relative to said body, an extending bridge slidably supported forwardly on said platform, a pair of transversely spaced compressible spring means interposed between said platform and said extending bridge to urge said bridge forwardly relative to said platform, said spring means adapted to yield to rearwardly imposed pressure longitudinally of said extending bridge, means for limiting forward movement of said extending bridge, and means for compressing said spring means to maintain said extending bridge in retracted position.
Claim 3
Dependent Claim
27 words
A load carrying vehicle as defined in claim 1, in which said means for compressing said spring means comprises a fluid operated piston cooperating with said bridge.
Claim 4
Dependent Claim
37 words
A load carrying vehicle as defined in claim 1, in which the platform is mounted on tracks extending transversely of said body, and the means for moving said platform along said tracks comprises an operator controlled motor.
Claim 5
Dependent Claim
32 words
A load carrying vehicle as defined in claim 2, in which limit switch means responsive to a definite rearward movement of said extending bridge interrupts the supply of fluid to said piston.
References Cited (Backward Citations)
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Cited
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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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |