Patent US3321029A successfully refreshed from Google Patents.
US3321029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically controlled plow
Assignee: International Motors LLC
•
Filing: 1964-09-10
•
Granted: 1967-05-23
•
Expires: 1984-09-10
Abstract
No abstract record available.
Inventors
- 👤 Morkoski James
- 👤 Gerald G Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:31
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/14; A01B63/16; A01B63/22; A01B3/00; A01B3/24; A01B3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE COMBINATION WITH A TRACTOR HAVING A DRAWBAR ADAPTED TO BE HELD IN A VERTICALLY FIXED POSITION, OF A MULTI-BOTTOM PLOW HAVING A GENERALLY TRIANGULARLY SHAPED PLOW-CARRYING MAIN FRAME, WHEREIN TWO APICES OF THE TRIANGLE ARE SPACED APART GENERALLY TRANSVERSELY OF THE DIRECTION OF TRAVEL, WHEEL MEANS SUPPORTING THE PLOW AT ONE OF SAID APICES AND VERTICALLY MOVABLE RELATIVE TO SAID MAIN FRAME, AND MEANS SUPPORTING THE PLOW AT THE OTHER OF SAID APICES ON THE TRACTOR DRAWBAR, COMPRISING A HITCH FRAME PIVOTALLY CONNECTED AT ITS REAR END TO SAID MAIN FRAME FOR VERTICAL SWINGING RELATIVE THERETO, MEANS CONNECTING THE FORWARD END OF SAID HITCH FRAME TO SAID DRAWBAR IN FIXED VERTICAL RELATION THERETO TO SUPPORT THE PLOW
Claim 2
Dependent Claim
118 words
THE COMBINATION WITH A TRACTOR HAVING A DRAWBAR ADAPTED TO BE HELD IN A VERTICALLY FIXED POSITION, OF A MULTI-BOTTOM PLOW HAVING A GENERALLY TRIANGULARLY SHAPED PLOW-CARRYING MAIN FRAME, WHEREIN TWO APICES OF THE TRIANGLE ARE SPACED APART GENERALLY TRANSVERSELY OF THE DIRECTION OF TRAVEL, WHEEL MEANS SUPPORTING THE PLOW AT ONE OF SAID APICES AND VERTICALLY MOVABLE RELATIVE TO SAID MAIN FRAME, AND MEANS SUPPORTING THE PLOW AT THE OTHER OF SAID APICES ON THE TRACTOR DRAWBAR, COMPRISING A HITCH FRAME PIVOTALLY CONNECTED AT ITS REAR END TO SAID MAIN FRAME FOR VERTICAL SWINGING RELATIVE THERETO, MEANS CONNECTING THE FORWARD END OF SAID HITCH FRAME TO SAID DRAWBAR IN FIXED VERTICAL RELATION THERETO TO SUPPORT THE PLOW
References Cited (Backward Citations)
US2691930A
Cited
US3236313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |