US3771809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for transporting loads on uneven or shifting ground, and also for launching small boats
Assignee: Individual
•
Filing: 1971-11-15
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Granted: 1973-11-13
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Expires: 1991-11-15
Abstract
Abstract The invention concerns a device for transporting loads on untreated, broken land such as uneven or shifting ground, and more particularly a device adapted for launching small boats.
Inventors
- 👤 P Carn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:55
CPC Classifications
B; B63; B63C; B63C13/00; B62; B62B; B62B2202/00; B62B2202/40; B62B2202/403; B62B2202/404; B62B2202/408; B62B2202/60; B62B2301/00; B62B2301/04; B62B2301/25; B62B2301/252; Y; Y10; Y10S; Y10S280/00; Y10S280/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
A device for the transport of small boats comprising: a. two pairs of load-bearing wheels, b. each of said wheels inflatable, elliptical in profile and having its axial length the major axis of the ellipsis, c. each pair of wheels mounted on a separate axle, d. said first and second axle in parallel alignment, e. three side members in parallel alignment, f. said side members being journaled at their extremities at respectively the left end of the axles, the center of the axles between said wheels and the right end of the axles, g. a cross piece having a circular cross section spanning said side members and rigidly attached to the center of each side member, h. a pair of upstanding support legs, each of said legs having at its lower end a semi-circular pillow block, i. said legs attached to said circular cross piece by mounting said pillow blocks on said circular cross piece, j. longitudinally extending load supports extending from the top of said legs, k. a bifurcated towing bar having ends journaled at each end of said cross piece, l. a forward load support at the front of said pivoted towing bar.
Claim 2
Independent Claim
195 words
A device for the transport of small boats comprising: a. two pairs of load-bearing wheels, b. each of said wheels inflatable, elliptical in profile and having its axial length the major axis of the ellipsis, c. each pair of wheels mounted on a separate axle, d. said first and second axle in parallel alignment, e. three side members in parallel alignment, f. said side members being journaled at their extremities at respectively the left end of the axles, the center of the axles between said wheels and the right end of the axles, g. a cross piece having a circular cross section spanning said side members and rigidly attached to the center of each side member, h. a pair of upstanding support legs, each of said legs having at its lower end a semi-circular pillow block, i. said legs attached to said circular cross piece by mounting said pillow blocks on said circular cross piece, j. longitudinally extending load supports extending from the top of said legs, k. a bifurcated towing bar having ends journaled at each end of said cross piece, l. a forward load support at the front of said pivoted towing bar.
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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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |