US3420313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implement hitch
Assignee: Allis Chalmers Corp
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Filing: 1966-08-29
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Granted: 1969-01-07
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Expires: 1986-08-29
Abstract
No abstract record available.
Inventors
- 👤 Maynard E Walberg
- 👤 Richard G Moe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:57
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/14; A01B63/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE COMBINATION WITH A TRACTOR OF THE TYPE HAVING A PAIR OF LATERALLY SPACED REARWARDLY DIRECTED DRAFT ARMS AND LIFTING MEANS FOR THE ARMS RESPONSIVE TO THE AMOUNT OF DRAFT REACTION IN THE ARMS, OF MEANS BRIDGING THE SPACE BETWEEN SAID ARMS AND SUPPORTED THEREON AND HAVING SECURING MEANS BETWEEN SAID ARMS FOR AN IMPLEMENT TONGUE, SAID ARMS BEING CONNECTED TO SAID BRIDGING MEANS INTERMEDIATE THE FORE-AND-AFT ENDS THEREOF AND WHEREIN SAID AFT END UNDERLIES SAID IMPLEMENT TONGUE AND BEING POSITIONABLE IN SUPPORTING RELATION THERETO AND THE FORE END OF SAID BRIDGING MEANS BEING PIVOTALLY CONNECTED TO SAID TRACTOR.
Claim 2
Dependent Claim
99 words
THE COMBINATION WITH A TRACTOR OF THE TYPE HAVING A PAIR OF LATERALLY SPACED REARWARDLY DIRECTED DRAFT ARMS AND LIFTING MEANS FOR THE ARMS RESPONSIVE TO THE AMOUNT OF DRAFT REACTION IN THE ARMS, OF MEANS BRIDGING THE SPACE BETWEEN SAID ARMS AND SUPPORTED THEREON AND HAVING SECURING MEANS BETWEEN SAID ARMS FOR AN IMPLEMENT TONGUE, SAID ARMS BEING CONNECTED TO SAID BRIDGING MEANS INTERMEDIATE THE FORE-AND-AFT ENDS THEREOF AND WHEREIN SAID AFT END UNDERLIES SAID IMPLEMENT TONGUE AND BEING POSITIONABLE IN SUPPORTING RELATION THERETO AND THE FORE END OF SAID BRIDGING MEANS BEING PIVOTALLY CONNECTED TO SAID 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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |