Patent US3552771A successfully refreshed from Google Patents.
US3552771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load distributing trailer hitch
Assignee: Individual
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Filing: 1969-03-28
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Granted: 1971-01-05
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Expires: 1989-03-28
Abstract
Abstract A LOAD DISTRIBUTING TRAILER HITCH HAVING A BALL MOUNT AND TWO REARWARDLY EXTENDING LOAD DISTRIBUTING BARS CONNECTED TO THE BASS MOUNT ON VERTICAL AXES IN LATERALLY SPACED RELATION TO THE BALL AND A SUPPORT DEVICE FOR THE REAR ENDS OF EACH OF THE BARS HAVING A HOUSING WITH A CARRIAGE SLIDABLE VERTICALLY THEREIN. THE BARS REST ON A FRICTION PLATE MOUNTED IN THE CARRIAGE, AND THE FRICTION PLATE IS SUPPORTED BY A RESILIENT MEMBER WHICH ABSORBS THE SHOCK AND EXCESS STRESSES RESULTING FORM VARIATION IN LOAD DURING THE NORMAL OPERATION OF THE VEHICLES. THE CARRIAGE IS ADJUSTABLE TO VARIOUS HEIGHTS RELATIVE TO THE FRAME TO OBTAIN OPTIMUM LOAD DISTRIBUTING CONDITIONS.
Inventors
- 👤 Grover E Hendricks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:15
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/01; B60D1/06; B60D1/065; B60D1/24; B60D1/30; B60D1/34; B60D1/345
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 |