US3552775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer hitch coupling
Assignee: Individual
•
Filing: 1968-03-06
•
Granted: 1971-01-05
•
Expires: 1988-03-06
Abstract
Abstract A TRAILER COUPLING DEVICE FOR USE WITH A CONVENTIONAL BALL HITCH IN WHICH A CYLINDRICAL PINTLE HAVING AN ANNULAR GROOVE IS ASSEMBLED WITH ADAPTED PLATES HAVING ANNULAR PROJECTIONS ON THEIR INNER SURFACES FOR ENGAGING THE GROOVE. THE OUTER SURFACES OF THE ADAPTED PLATES ARE SHAPED TO CONFORM THE ASSELBLY TO THE SHAPE AND SIZE OF THE RECEIVER ON A TOWING VEHICLE. LOCK PINS PASS THROUGH THE RECEIVER AND THE ADAPTED PLATES TO RETAIN THE PINTLE IN PLACE IN THE RECEIVER WHILE PERMITTING IT TO ROTATE WITHIN THE ADAPTER PLATES.
Inventors
- 👤 Richard E Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:29
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/01; B60D1/07; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32975; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |