US3238913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for propelling buoyant vehicles
Assignee: FMC Corp
•
Filing: 1963-09-26
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Granted: 1966-03-08
•
Expires: 1983-09-26
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Slemmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:04
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/18; B62D55/20; B60; B60F; B60F3/00; B60F3/0007; B60F3/0015
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A CRAWLER CHAIN FOR PROPELLING A BOGIE WHEEL SUPPORTED VEHICLE ON LAND AND IN WATER COMPRISING A PLURALITY OF REGULARLY SPACED PIVOTALLY CONNECTED LINKS; MEANS CENTRALLY OF SAID LINKS PROVIDING A SURFACE FOR ROLLINGLY ENGAGING THE BOGIE WHEELS; ANGULARLY DISPOSED TRANSVERSELY ALIGNED BLADE MEANS HAVING THEIR RESPECTIVE INNER ENDS INTEGRAL WITH SAID BOGIE WHEEL ENGAGING MEANS; AND SHROUD MEANS ON SAID BLADE MEANS, SAID SHROUD MEANS BEING ORIENTED GENERALLY TRANSVERSE TO THE LENGTH OF SAID BLADE MEANS.
Claim 2
Dependent Claim
77 words
A CRAWLER CHAIN FOR PROPELLING A BOGIE WHEEL SUPPORTED VEHICLE ON LAND AND IN WATER COMPRISING A PLURALITY OF REGULARLY SPACED PIVOTALLY CONNECTED LINKS; MEANS CENTRALLY OF SAID LINKS PROVIDING A SURFACE FOR ROLLINGLY ENGAGING THE BOGIE WHEELS; ANGULARLY DISPOSED TRANSVERSELY ALIGNED BLADE MEANS HAVING THEIR RESPECTIVE INNER ENDS INTEGRAL WITH SAID BOGIE WHEEL ENGAGING MEANS; AND SHROUD MEANS ON SAID BLADE MEANS, SAID SHROUD MEANS BEING ORIENTED GENERALLY TRANSVERSE TO THE LENGTH OF SAID BLADE MEANS.
References Cited (Backward Citations)
FR415640A
Cited
US1635854A
Cited
US2278215A
Cited
US2680421A
Cited
US2705470A
Cited
FR1105053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |