US3416611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic return trip for moldboard plow
Assignee: Case LLC
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Filing: 1966-10-27
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Granted: 1968-12-17
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Expires: 1986-10-27
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:56
CPC Classifications
A; A01; A01B; A01B61/00; A01B61/04; A01B61/044; A01B61/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
IN A TRIP PLOW, A TRAVELING SUPPORTING FRAME, A PLOW INCLUDING A STANDARD HAVING A LOWER TOOL-CARRYING PORTION AND A FORWARDLY DIRECTED PORTION, MEANS MOUNTING SAID PLOW ON SAID FRAME FOR TRIPPING IN RESPONSE TO ABNORMAL DRAFT FORCES COMPRISING, PIVOT MEANS CONNECTING THE TOOLCARRYING STANDARD TO THE FRAME TO ACCOMMODATE SAID TRIPPING, SAID PIVOT MEANS INCLUDING A PIN AND SLOT CONNECTION ACCOMMODATING REARWARD MOVEMENT OF THE PLOW RELATIVE TO THE FRAME, HOLDING MEANS ACTING BETWEEN THE FRAME AND THE PLOW TO PREVENT TRIPPING OF THE LATTER AND RELEASABLE AFTER A PREDETERMINED REARWARD MOVEMENT OF THE PLOW, SPRING MEANS ACTING BETWEEN THE PLOW AND THE FRAME TO YIELDABLY OPPOSE SAID REARWARD MOVEMENT OF THE PLOW, HYDRAULIC POWER TRANSMITTING MEANS MOUNTED ON THE FRAME FOR CUSHIONING THE PLOW WHEN IT IS TRIPPED AND AUTOMATICALLY OPERABLE TO RETURN IT TO ITS OPERATING POSITION, AND CONNECTING MEANS BETWEEN THE PLOW AND SAID HYDRAU-
Claim 2
Dependent Claim
149 words
IN A TRIP PLOW, A TRAVELING SUPPORTING FRAME, A PLOW INCLUDING A STANDARD HAVING A LOWER TOOL-CARRYING PORTION AND A FORWARDLY DIRECTED PORTION, MEANS MOUNTING SAID PLOW ON SAID FRAME FOR TRIPPING IN RESPONSE TO ABNORMAL DRAFT FORCES COMPRISING, PIVOT MEANS CONNECTING THE TOOLCARRYING STANDARD TO THE FRAME TO ACCOMMODATE SAID TRIPPING, SAID PIVOT MEANS INCLUDING A PIN AND SLOT CONNECTION ACCOMMODATING REARWARD MOVEMENT OF THE PLOW RELATIVE TO THE FRAME, HOLDING MEANS ACTING BETWEEN THE FRAME AND THE PLOW TO PREVENT TRIPPING OF THE LATTER AND RELEASABLE AFTER A PREDETERMINED REARWARD MOVEMENT OF THE PLOW, SPRING MEANS ACTING BETWEEN THE PLOW AND THE FRAME TO YIELDABLY OPPOSE SAID REARWARD MOVEMENT OF THE PLOW, HYDRAULIC POWER TRANSMITTING MEANS MOUNTED ON THE FRAME FOR CUSHIONING THE PLOW WHEN IT IS TRIPPED AND AUTOMATICALLY OPERABLE TO RETURN IT TO ITS OPERATING POSITION, AND CONNECTING MEANS BETWEEN THE PLOW AND SAID HYDRAU-
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) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |