Patent US3308782A successfully refreshed from Google Patents.
US3308782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amphibious vehicle
Assignee: Individual
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Filing: 1965-04-05
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Granted: 1967-03-14
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Expires: 1985-04-05
Abstract
No abstract record available.
Inventors
- 👤 Robert M Dahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:05
CPC Classifications
B; B60; B60F; B60F3/00; B60F3/0061; B60F3/0092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
A DEVICE FOR FLOTATION OF HOUSE TRAILERS AND THE LIKE, COMPRISING A PAIR OF PONTOONS, A FRAMEWORK ADAPTED FOR ATTACHMENT TO A HOUSE TRAILER, BOOMS CARRIED ON SAID FRAMEWORK FOR FREEDOM OF SWINGING MOVEMENT, SAID PONTOONS BEING ATTACHED TO THE DISTAL ENDS OF SAID BOOMS FOR MOVEMENT BETWEEN AN ELEVATED POSITION ABOVE THE HOUSE TRAILER AND A LOWERED POSITION SPACED LATERALLY FROM AND LOWER THAN THE HOUSE TRAILER, THE BOTTOMS OF SAID PONTOONS BEING LOWER THAN THE BOTTOMS OF THE WHEELS OF THE HOUSE TRAILER IN SAID LOWERED POSITION BY A DISTANCE SUFFICIENT TO ELEVATE THE BOTTOMS OF THE HOUSE TRAILER WHEELS ABOVE THE WATER WHEN SAID PONTOONS ARE AFLOAT, SAID BOOMS BEING FORMED AND PROPORTIONED FOR LIFTING AND SUPPORTING THE WEIGHT OF THE HOUSE TRAILER ON SAID PONTOONS AS THE LATTER MOVE TOWARD SAID LOWERED POSITION, GROUND ENGAGING MEANS ON SAID PONTOONS EACH OF WHICH GROUND ENGAGING MEANS IS FORMED TO PROVIDE FREEDOM OF LATERAL MOVEMENT OF THE PONTOONS RELATIVE TO THE GROUND WHILE THE HOUSE TRAILER IS BEING LIFTED AND SUPPORTED THEREON, AND ACTUATING MEANS CONNECTED TO SAID BOOMS AND FORMED FOR EFFECTING SAID SWINGING MOVEMENT OF SAID PONTOONS BETWEEN SAID ELEVATED AND LOWERED POSITIONS.
Claim 2
Independent Claim
197 words
A DEVICE FOR FLOTATION OF HOUSE TRAILERS AND THE LIKE, COMPRISING A PAIR OF PONTOONS, A FRAMEWORK ADAPTED FOR ATTACHMENT TO A HOUSE TRAILER, BOOMS CARRIED ON SAID FRAMEWORK FOR FREEDOM OF SWINGING MOVEMENT, SAID PONTOONS BEING ATTACHED TO THE DISTAL ENDS OF SAID BOOMS FOR MOVEMENT BETWEEN AN ELEVATED POSITION ABOVE THE HOUSE TRAILER AND A LOWERED POSITION SPACED LATERALLY FROM AND LOWER THAN THE HOUSE TRAILER, THE BOTTOMS OF SAID PONTOONS BEING LOWER THAN THE BOTTOMS OF THE WHEELS OF THE HOUSE TRAILER IN SAID LOWERED POSITION BY A DISTANCE SUFFICIENT TO ELEVATE THE BOTTOMS OF THE HOUSE TRAILER WHEELS ABOVE THE WATER WHEN SAID PONTOONS ARE AFLOAT, SAID BOOMS BEING FORMED AND PROPORTIONED FOR LIFTING AND SUPPORTING THE WEIGHT OF THE HOUSE TRAILER ON SAID PONTOONS AS THE LATTER MOVE TOWARD SAID LOWERED POSITION, GROUND ENGAGING MEANS ON SAID PONTOONS EACH OF WHICH GROUND ENGAGING MEANS IS FORMED TO PROVIDE FREEDOM OF LATERAL MOVEMENT OF THE PONTOONS RELATIVE TO THE GROUND WHILE THE HOUSE TRAILER IS BEING LIFTED AND SUPPORTED THEREON, AND ACTUATING MEANS CONNECTED TO SAID BOOMS AND FORMED FOR EFFECTING SAID SWINGING MOVEMENT OF SAID PONTOONS BETWEEN SAID ELEVATED AND LOWERED POSITIONS.
References Cited (Backward Citations)
US2994294A
Cited
FR1175607A
Cited
US2928631A
Cited
DE1111048B
Cited
US3026841A
Cited
US3211124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |