Patent US3223175A successfully refreshed from Google Patents.
US3223175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cultivator spring trip mounted assembly
Assignee: AGCO Ltd
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Filing: 1964-10-19
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Granted: 1965-12-14
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Expires: 1984-10-19
Abstract
No abstract record available.
Inventors
- 👤 Twidale William Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:41
CPC Classifications
A; A01; A01B; A01B61/00; A01B61/04; A01B61/044; A01B61/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A SPRING TRIP ASSEMBLY INCLUDING A BRACKET, A CULTIVATOR SHANK PIVOTALLY MOUNTED ON THE BRACKET FOR MOVEMENT BETWEEN AN OPERATIVE, EARTHWORKING POSITION AND AN INOPERATIVE TRIPPED POSITION WITH RESPECT TO SAID BRACKET AND A SPRING CONNECTED BETWEEN SAID BRACKET AND SAID SHANK OPERATIVE TO RESILIENTLY RESTRAIN AND SAID SHANK AGAINST MOVEMENT FROM ITS OPERATIVE POSITION AND TO RESILIENTLY URGE THE SHANK TO RETURN TO THE OPERATIVE POSITION FROM THE TRIPPED POSITION CHARACTERIZED BY HAVING MEANS INTERCONNECTING SAID SHANK AND SAID SPRING OPERABLE TO PROGRESSIVELY DECREASE AND INCREASE THE FORCE OF THE SPRING ACTING ON SAID SHANK AS THE SHANK RESPECTIVELY INTERCONNECTING AND RETURNS TO ITS OPERATIVE POSITION, SAID INTERCONNECTING MEANS COMPRISES A SHAFT ROTATABLY MOUNTED ON SAID BRACKET AND HAVING A PAIR OF RADIALLY PROJECTING ARMS, AND MEANS PIVOTALLY AND SLIDEABLY CONNECTING SAID SHANK
Claim 2
Dependent Claim
134 words
A SPRING TRIP ASSEMBLY INCLUDING A BRACKET, A CULTIVATOR SHANK PIVOTALLY MOUNTED ON THE BRACKET FOR MOVEMENT BETWEEN AN OPERATIVE, EARTHWORKING POSITION AND AN INOPERATIVE TRIPPED POSITION WITH RESPECT TO SAID BRACKET AND A SPRING CONNECTED BETWEEN SAID BRACKET AND SAID SHANK OPERATIVE TO RESILIENTLY RESTRAIN AND SAID SHANK AGAINST MOVEMENT FROM ITS OPERATIVE POSITION AND TO RESILIENTLY URGE THE SHANK TO RETURN TO THE OPERATIVE POSITION FROM THE TRIPPED POSITION CHARACTERIZED BY HAVING MEANS INTERCONNECTING SAID SHANK AND SAID SPRING OPERABLE TO PROGRESSIVELY DECREASE AND INCREASE THE FORCE OF THE SPRING ACTING ON SAID SHANK AS THE SHANK RESPECTIVELY INTERCONNECTING AND RETURNS TO ITS OPERATIVE POSITION, SAID INTERCONNECTING MEANS COMPRISES A SHAFT ROTATABLY MOUNTED ON SAID BRACKET AND HAVING A PAIR OF RADIALLY PROJECTING ARMS, AND MEANS PIVOTALLY AND SLIDEABLY CONNECTING SAID SHANK
References Cited (Backward Citations)
US989232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |