Patent US3077277A successfully refreshed from Google Patents.
US3077277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat trailer
Assignee: Dana Inc
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Filing: 1960-06-20
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Granted: 1963-02-12
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Expires: 1980-06-20
Abstract
No abstract record available.
Inventors
- 👤 James W Holzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:59
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/10; B60P3/1033; B60P3/1066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN A BOAT TRAILER THE COMBINATION COMPRISING A SUPPORTING FRAME, A PAIR OF MEMBERS EACH PIVOTALLY MOUNTED RELATIVE TO SAID FRAME AT A POINT INTERMEDIATE THE ENDS THEREOF, HULL ENGAGING MEANS DISPOSED ON THE OUTER END OF EACH OF SAID PAIR OF MEMBERS, AND KEEL ENGAGING MEANS CONNECTING THE INNER ENDS OF SAID PAIR OF MEMBERS, THE KEEL ENGAGING MEANS BEING OPERATED BY THE WEIGHT OF A BOAT THEREON TO PIVOT SAID PAIR OF MEMBERS WHEREBY THE WEIGHT OF THE BOAT IS PROPORTIONED BETWEEN SAID HULL ENGAGING MEANS AND SAID KEEL ENGAGING MEANS, THE POSITION OF SAID HULL ENGAGING MEANS AND SAID KEEL ENGAGING MEANS BEING CONSTANTLY ADJUSTED IN ACCORDANCE WITH THE VARYING CONTOUR OF THE BOAT HULL AS THE BOAT MOVES LONGITUDINALLY ONTO OR FROM THE TRAILER.
Claim 2
Dependent Claim
128 words
IN A BOAT TRAILER THE COMBINATION COMPRISING A SUPPORTING FRAME, A PAIR OF MEMBERS EACH PIVOTALLY MOUNTED RELATIVE TO SAID FRAME AT A POINT INTERMEDIATE THE ENDS THEREOF, HULL ENGAGING MEANS DISPOSED ON THE OUTER END OF EACH OF SAID PAIR OF MEMBERS, AND KEEL ENGAGING MEANS CONNECTING THE INNER ENDS OF SAID PAIR OF MEMBERS, THE KEEL ENGAGING MEANS BEING OPERATED BY THE WEIGHT OF A BOAT THEREON TO PIVOT SAID PAIR OF MEMBERS WHEREBY THE WEIGHT OF THE BOAT IS PROPORTIONED BETWEEN SAID HULL ENGAGING MEANS AND SAID KEEL ENGAGING MEANS, THE POSITION OF SAID HULL ENGAGING MEANS AND SAID KEEL ENGAGING MEANS BEING CONSTANTLY ADJUSTED IN ACCORDANCE WITH THE VARYING CONTOUR OF THE BOAT HULL AS THE BOAT MOVES LONGITUDINALLY ONTO OR FROM THE TRAILER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |