US3358634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amphibious vehicle
Assignee: Individual
•
Filing: 1966-01-27
•
Granted: 1967-12-19
•
Expires: 1986-01-27
Abstract
No abstract record available.
Inventors
- 👤 Houston W Pratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:09
CPC Classifications
B; B60; B60F; B60F3/00; B62; B62D; B62D55/00; B62D55/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROPELLING DEVICE FOR AN AMPHIBIOUS VEHICLE COMPRISING DRUMS ROTATABLY MOUNTED ON SAID VEHICLE, AND ENDLESS BELT TRAVELLING OVER SAID DRUMS ABOUT A CLOSED PATH OF TRAVEL, THE DRUMS BEING ENCLOSED WITHIN SAID PATH, AND MEANS FOR CHANGING THE DIAMETER OF ONE OF SAID DRUMS TO VARY THE CONTOUR OF THE CLOSED PATH OF TRAVEL THEREBY ADAPTING THE VEHICLE TO DIFFERENT TERRIAN AND SURFACE CONDITIONS.
Claim 2
Dependent Claim
65 words
A PROPELLING DEVICE FOR AN AMPHIBIOUS VEHICLE COMPRISING DRUMS ROTATABLY MOUNTED ON SAID VEHICLE, AND ENDLESS BELT TRAVELLING OVER SAID DRUMS ABOUT A CLOSED PATH OF TRAVEL, THE DRUMS BEING ENCLOSED WITHIN SAID PATH, AND MEANS FOR CHANGING THE DIAMETER OF ONE OF SAID DRUMS TO VARY THE CONTOUR OF THE CLOSED PATH OF TRAVEL THEREBY ADAPTING THE VEHICLE TO DIFFERENT TERRIAN AND SURFACE CONDITIONS.
References Cited (Backward Citations)
US1989573A
Cited
US2374240A
Cited
US2652289A
Cited
FR1044699A
Cited
USRE24272E
Cited
US3170533A
Cited
US3182741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |