US3204984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible weight transfer tractor hitch
Assignee: Allis Chalmers Corp
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Filing: 1963-07-01
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Granted: 1965-09-07
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Expires: 1983-07-01
Abstract
No abstract record available.
Inventors
- 👤 Maynard E Walberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:15
CPC Classifications
A; A01; A01B; A01B59/00; A01B59/04; A01B59/042; A01B63/00; A01B63/02; A01B63/10; A01B63/14; A01B63/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A HITCH FOR USE WITH A TRACTOR HAVING A DRAFT TRANSMITTING COUPLING ELEMENT AND UP AND DOWN SWINGABLE POWER LIFT ELEMENT MOUNTED THEREON, SAID HITCH COMPRISING: A FORWARD COUPLING ELEMENT ADAPTED FOR CONNECTION IN VERTICALLY SWINGABLE RELATION WITH SAID TRACTOR MOUNTED COUPLING ELEMENT; A REARWARD COUPLING ELEMENT ADAPTED FOR CONNECTION IN DRAFT TRANSMITTING, VERTICALLY RIGID RELATION WITH A DRAWN GROUND ENGAGING STRUCTURE; A FIRST ELONGATED, VERTICALLY DEFLECTABLE AND HORIZONTALLY RIGID SPRING ELEMENT RIGIDLY CONNECTED AT ITS OPPOSITE ENDS WITH SAID FORWARD AND REARWARD COUPLING ELEMENTS, RESPECTIVELY; A SECOND ELONGATED VERTICALLY DEFLECTABLE AND HORIZONTALLY RIGID SPRING ELEMENT RIGIDLY CONNECTED AT ONE END THEREOF WITH SAID FORWARD COUPLING ELEMENT AND EXTENDING REARWARDLY THEREFROM IN OVERLYING RELATION TO SAID FIRST SPRING ELEMENT; AND MEANS CONNECTED IN LIFT FORCE TRANMITTING RELATION WITH THE REAR END OF SAID SECOND SPRING ELEMENT FOR TRANSMITTING LIFTING POWER THERETO FROM SAID TRACTOR MOUNTED POWER LIFT ELEMENT.
Claim 2
Dependent Claim
148 words
A HITCH FOR USE WITH A TRACTOR HAVING A DRAFT TRANSMITTING COUPLING ELEMENT AND UP AND DOWN SWINGABLE POWER LIFT ELEMENT MOUNTED THEREON, SAID HITCH COMPRISING: A FORWARD COUPLING ELEMENT ADAPTED FOR CONNECTION IN VERTICALLY SWINGABLE RELATION WITH SAID TRACTOR MOUNTED COUPLING ELEMENT; A REARWARD COUPLING ELEMENT ADAPTED FOR CONNECTION IN DRAFT TRANSMITTING, VERTICALLY RIGID RELATION WITH A DRAWN GROUND ENGAGING STRUCTURE; A FIRST ELONGATED, VERTICALLY DEFLECTABLE AND HORIZONTALLY RIGID SPRING ELEMENT RIGIDLY CONNECTED AT ITS OPPOSITE ENDS WITH SAID FORWARD AND REARWARD COUPLING ELEMENTS, RESPECTIVELY; A SECOND ELONGATED VERTICALLY DEFLECTABLE AND HORIZONTALLY RIGID SPRING ELEMENT RIGIDLY CONNECTED AT ONE END THEREOF WITH SAID FORWARD COUPLING ELEMENT AND EXTENDING REARWARDLY THEREFROM IN OVERLYING RELATION TO SAID FIRST SPRING ELEMENT; AND MEANS CONNECTED IN LIFT FORCE TRANMITTING RELATION WITH THE REAR END OF SAID SECOND SPRING ELEMENT FOR TRANSMITTING LIFTING POWER THERETO FROM SAID TRACTOR MOUNTED POWER LIFT ELEMENT.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |