Patent US3223435A successfully refreshed from Google Patents.
US3223435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock absorber trailer hitch
Assignee: Individual
•
Filing: 1963-04-05
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Granted: 1965-12-14
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Expires: 1983-04-05
Abstract
No abstract record available.
Inventors
- 👤 Yarbrough Glen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:18
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/48; B60D1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A SHOCK ABSORBER TRAILER HITCH INCLUDING A BALL AND SOCKET CONNECTOR JOINT FOR OPERATIVELY JOINING A TRAILER AND A TOW VEHICLE WHICH INCLUDES A PAIR OF JUXTAPOSED VERTICALLY ARRANGED COMPRESSION COIL SPRINGS EACH ENCLOSED IN A PROTECTIVE CYLINDRICAL HOUSING WHICH CONPLETELY SURROUNDS AND ENCLOSES THE COIL SPRING A PAIR OF VERTICAL DIAMETRICALLY DISPOSED SLOTS EXTENDING THROUGH THE CYLINDRICAL WALL OF SAID HOUSING, A RADIALLY INWARDLY PROJECTING LOWER FIXED SEAT LOCATED WITHIN EACH HOUSING AND ARRANGED TO SUPPORT THE LOWER END OF THE COIL SPRING AND TO LIMIT THE EXTENT OF ITS DOWNWARD MOVEMENT WITHIN THE HOUSING, ANOTHER RADIALLY INWARDLY PROJECTING UPPER ADJUSTABLE SEAT LOCATED WITHIN EACH HOUSING AND ARRANGED TO SUPPORT THE UPPER END OF THE COIL SPRING AND TO LIMIT THE EXTENT OF ITS UPWARD MOVEMENT WITHIN THE HOUSING, AND A PAIR OF HORIZONTALLY DISPOSED ELONGATED ARMS PIVOTALLY CONECTED TO THE TOW VEHICLE AND EXTENDING THROUGH THE VERTICAL SLOTS IN THE HOUSING AND ADAPTED TO ENGAGE AND TO COMPRESS SAID COIL SPRING TO ABSORB SHOCK BOTH UPON THE UPWARD AND DOWNWARD MOVEMENT OF THE BALL AND SOCKET CONNECTOR JOINT WHICH MAY OCCUR AS THE TRAILER AND TOW VEHICLE ARE MOVING OVER ROUGH TERRAIN.
Claim 2
Dependent Claim
194 words
A SHOCK ABSORBER TRAILER HITCH INCLUDING A BALL AND SOCKET CONNECTOR JOINT FOR OPERATIVELY JOINING A TRAILER AND A TOW VEHICLE WHICH INCLUDES A PAIR OF JUXTAPOSED VERTICALLY ARRANGED COMPRESSION COIL SPRINGS EACH ENCLOSED IN A PROTECTIVE CYLINDRICAL HOUSING WHICH CONPLETELY SURROUNDS AND ENCLOSES THE COIL SPRING A PAIR OF VERTICAL DIAMETRICALLY DISPOSED SLOTS EXTENDING THROUGH THE CYLINDRICAL WALL OF SAID HOUSING, A RADIALLY INWARDLY PROJECTING LOWER FIXED SEAT LOCATED WITHIN EACH HOUSING AND ARRANGED TO SUPPORT THE LOWER END OF THE COIL SPRING AND TO LIMIT THE EXTENT OF ITS DOWNWARD MOVEMENT WITHIN THE HOUSING, ANOTHER RADIALLY INWARDLY PROJECTING UPPER ADJUSTABLE SEAT LOCATED WITHIN EACH HOUSING AND ARRANGED TO SUPPORT THE UPPER END OF THE COIL SPRING AND TO LIMIT THE EXTENT OF ITS UPWARD MOVEMENT WITHIN THE HOUSING, AND A PAIR OF HORIZONTALLY DISPOSED ELONGATED ARMS PIVOTALLY CONECTED TO THE TOW VEHICLE AND EXTENDING THROUGH THE VERTICAL SLOTS IN THE HOUSING AND ADAPTED TO ENGAGE AND TO COMPRESS SAID COIL SPRING TO ABSORB SHOCK BOTH UPON THE UPWARD AND DOWNWARD MOVEMENT OF THE BALL AND SOCKET CONNECTOR JOINT WHICH MAY OCCUR AS THE TRAILER AND TOW VEHICLE ARE MOVING OVER ROUGH TERRAIN.
References Cited (Backward Citations)
US1908711A
Cited
US1991684A
Cited
US2463140A
Cited
US2698667A
Cited
US2660444A
Cited
US2852274A
Cited
US3021154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |