Patent US3093393A successfully refreshed from Google Patents.
US3093393A
Expired / Lapsed
US
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Combination trailer hitch and overload supporting device
Assignee: Individual
•
Filing: 1961-10-11
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Granted: 1963-06-11
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Expires: 1981-10-11
Abstract
No abstract record available.
Inventors
- 👤 Lem A Madden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:55
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/06; B62D53/068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A TRAILER LOAD EQUALIZING DEVICE FOR USE WITH A TRACTOR VEHICLE HAVING A TRAILER DRAWBAR CONNECTED TO THE FRAME THEREOF AND A TRAILER HAVING A TONGUE COUPLED TO SAID DRAWBAR BY A TRAILER HITCH, COMPRISING LEVER MEANS CONNECTED TO SAID TONGUE FOR APPLYING A DOWNWARD FORCE ON THE WHEELS OF SAID TRAILER WHILE APPLYING A LIFTING FORCE TO THE END OF SAID TONGUE CONNECTED TO SAID HITCH; AND A FLEXIBLE TENSION MEMBER EXTENDING TAUTLY OVER THE REAR
Claim 2
Dependent Claim
77 words
A TRAILER LOAD EQUALIZING DEVICE FOR USE WITH A TRACTOR VEHICLE HAVING A TRAILER DRAWBAR CONNECTED TO THE FRAME THEREOF AND A TRAILER HAVING A TONGUE COUPLED TO SAID DRAWBAR BY A TRAILER HITCH, COMPRISING LEVER MEANS CONNECTED TO SAID TONGUE FOR APPLYING A DOWNWARD FORCE ON THE WHEELS OF SAID TRAILER WHILE APPLYING A LIFTING FORCE TO THE END OF SAID TONGUE CONNECTED TO SAID HITCH; AND A FLEXIBLE TENSION MEMBER EXTENDING TAUTLY OVER THE REAR
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |