Patent US3077276A successfully refreshed from Google Patents.
US3077276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat trailer
Assignee: ABERDEEN WELDING SERVICE Inc
•
Filing: 1959-12-21
•
Granted: 1963-02-12
•
Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 Thwreatt Robert Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:11
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/10; B60P3/1033; B60P3/1066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A BOAT TRAILER COMPRISING: A FRAME; A PLURALITY OF CRADLE MEANS AFFIXED TO SAID FRAME, AT LEAST ONE OF SAID CRADLE MEANS BEING SITUATED IN EACH QUADRANT OF SAID FRAME; A PLURALITY OF KEEL-ENGAGING ANTI-FRICTION ASSEMBLIES VERTICALLY PIVOTALLY ARRANGED ALONG THE LONGITUDINAL AXIS OF SAID FRAME TO BE DISPOSABLE IN UNISON INTO A BOATBEARING POSITION WHEREIN THE BOAT IS FREE OF SAID CRADLE MEANS AND INTO A RETRACTED POSITION WHEREIN SAID BOAT RESTS EXCLUSIVELY ON SAID CRADLE MEANS; MEANS MECHANICALLY CONNECTING SAID ASSEMBLIES IN SERIES; AND CONTROL MEANS, INCLUDING A CRANK SHAFT AND A CAM ON SAID CRANK SHAFT OPERABLY ENGAGING A GENERALLY VERTICAL CAM SURFACE ON ONE OF SAID ANTIFRICTION ASSEMBLIES, SAID CONTROL MEANS OPERATING TO ELEVATE THE ASSEMBLIES INTO BOAT-BEARING POSITION AND TO RELEASE THE ASSEMBLIES INTO THE RETRACTED POSITION WITH ROTATION OF SAID CRANK SHAFT TO ELEVATE THE ASSEMBLIES ACTING TO OVER-CENTER SAID CAM WHEREBY TO POSITIVELY SECURE THE SAID ASSEMBLIES IN THE BOAT-BEARING POSITION.
Claim 2
Dependent Claim
158 words
A BOAT TRAILER COMPRISING: A FRAME; A PLURALITY OF CRADLE MEANS AFFIXED TO SAID FRAME, AT LEAST ONE OF SAID CRADLE MEANS BEING SITUATED IN EACH QUADRANT OF SAID FRAME; A PLURALITY OF KEEL-ENGAGING ANTI-FRICTION ASSEMBLIES VERTICALLY PIVOTALLY ARRANGED ALONG THE LONGITUDINAL AXIS OF SAID FRAME TO BE DISPOSABLE IN UNISON INTO A BOATBEARING POSITION WHEREIN THE BOAT IS FREE OF SAID CRADLE MEANS AND INTO A RETRACTED POSITION WHEREIN SAID BOAT RESTS EXCLUSIVELY ON SAID CRADLE MEANS; MEANS MECHANICALLY CONNECTING SAID ASSEMBLIES IN SERIES; AND CONTROL MEANS, INCLUDING A CRANK SHAFT AND A CAM ON SAID CRANK SHAFT OPERABLY ENGAGING A GENERALLY VERTICAL CAM SURFACE ON ONE OF SAID ANTIFRICTION ASSEMBLIES, SAID CONTROL MEANS OPERATING TO ELEVATE THE ASSEMBLIES INTO BOAT-BEARING POSITION AND TO RELEASE THE ASSEMBLIES INTO THE RETRACTED POSITION WITH ROTATION OF SAID CRANK SHAFT TO ELEVATE THE ASSEMBLIES ACTING TO OVER-CENTER SAID CAM WHEREBY TO POSITIVELY SECURE THE SAID ASSEMBLIES IN THE BOAT-BEARING POSITION.
References Cited (Backward Citations)
US2733823A
Cited
US1941400A
Cited
US2586485A
Cited
US2700480A
Cited
US2788908A
Cited
US2889945A
Cited
US2848126A
Cited
US2805786A
Cited
US2865522A
Cited
US2840252A
Cited
US2960246A
Cited
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 |