US3073622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer hitch arrangement
Assignee: AGCO Ltd
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Filing: 1961-08-07
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Granted: 1963-01-15
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Expires: 1981-08-07
Abstract
No abstract record available.
Inventors
- 👤 Henry E Merritt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:59
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/42; B60D1/46; B60D1/465; B60D1/36
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
166 words
A TRACTOR-TRAILER COMBINATION COMPRISING, IN COMBINATION, A HYDRAULIC RAM MOUNTED IN SAID TRACTOR, A PUMP IN SAID TRACTOR FOR SUPPLYING FLUID TO SAID RAM, A CONTROL VALVE CONNECTED TO THE SUCTION SIDE OF SAID PUMP, SAID RAM BEING COUPLED TO THE DELIVERY SIDE OF SAID PUMP AND TO SAID VALVE, A SPRING POSITIONED SENSING MEMBER MOUNTED ON SAID TRACTOR, A SETTABLE CONTROL LEVER MOUNTED ON SAID TRACTOR, MEANS CONNECTING SAID SENSING MEMBER AND SAID CONTROL LEVER TO SAID VALVE FOR JOINT CONTROL OF SAID RAM, A COUPLING MOUNTED ON SAID TRACTOR, A TRAILER DRAWBAR RELEASABLY SECURED TO SAID COUPLING FOR LATERAL FREE SWINGING MOVEMENT, A HYDRAULICALLY CONTRACTIBLE LINK COUPLED BETWEEN SAID DRAWBAR AND SAID SENSING MEMBER, SAID DRAWBAR AND SAID LINK BEING COUPLED TO SAID TRACTOR AT POINTS LYING ONE ABOVE THE OTHER ON A SUBSTANTIALLY VERTICAL LINE, AND MEANS HYDRAULICALLY CONNECTING SAID LINK TO A POINT BETWEEN SAID RAM AND SAID VALVE SO AS TO TRANSFER A SELECTED AMOUNT OF TRAILER WEIGHT TO THE TRACTOR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |