Patent US3715133A successfully refreshed from Google Patents.
US3715133A
Expired / Lapsed
US
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Attachments permitting a vehicle tongue to be lifted by actuation of tractor draft links
Assignee: Deere and Co
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Filing: 1971-05-10
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Granted: 1973-02-06
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Expires: 1991-05-10
Abstract
Abstract A TWO-WHEELED VEHICLE AND AN AGRICULTURAL TRACTOR HAVE COOPERATIVE ATTACHMENTS FOR PERMITTING THE TRACTOR DRAFT LINKS TO BE OPERATED TO RAISE THE TONGUE OF THE VEHICLE FROM THE GROUND INTO POSITION FOR CONNECTION TO THE TRACTOR DRAWBAR. SPECIFICALLY, A SPRING MEMBER IS FIXED TO THE VEHICLE TONGUE, REARWARDLY OF THE FORWARD END OF THE LATTER, AND INCLUDES A FREE END PORTION EXTENDING FORWARDLY ABOVE THE TONGUE. A V-SHAPED PICKUP ROD HAS ITS OPPOSITE ENDS RECEIVED IN BALL CONNECTORS AT THE REAR ENDS OF THE LIFT ARMS OF THE TRACTOR AND IS ADAPTED TO LIFTINGLY ENGAGE THE FREE END PORTION OF THE SPRING MEMBER.
Inventors
- 👤 R Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:37
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/36
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |