US3380759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor draft arm support
Assignee: Case LLC
•
Filing: 1966-09-28
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Granted: 1968-04-30
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Expires: 1986-09-28
Abstract
No abstract record available.
Inventors
- 👤 Roger F Engelmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:06
CPC Classifications
A; A01; A01B; A01B59/00; A01B59/002; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32861; Y10T403/32918; Y10T403/59; Y10T403/597
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A TRACTOR DRAFT ARM SUPPORT CONVERTIBLE BETWEEN A RIGID CONNECTION AND AN ARTICULAR CONNECTION FOR RESPECTIVE FIXED AND FLOATING CONNECTION OF AN IMPLEMENT TO A TRACTOR, THE COMBINATION COMPRISING A PIVOTAL DRAFT ARM FOR UP AND DOWN MOVEMENT, SUPPORT MEANS INCLUDING A LINK PIVOTALLY CONNECTED TO SAID DRAFT ARM AND BEING PIVOTALLY CONNECTED TO THE REMAINDER OF SAID SUPPORT MEANS, A PIN ROTATABLY MOUNTED ON SAID LIFT MEANS ON AN AXIS SPACED FROM THE AXIS OF THE PIVOTAL CONNECTION BETWEEN SAID LINK AND SAID REMAINDER OF SAID SUPPORT MEANS BEING SELECTIVELY FREE OF SAID LINK, SAID PIN AND SAID LINK RESPECTIVELY HAV-
Claim 2
Dependent Claim
102 words
A TRACTOR DRAFT ARM SUPPORT CONVERTIBLE BETWEEN A RIGID CONNECTION AND AN ARTICULAR CONNECTION FOR RESPECTIVE FIXED AND FLOATING CONNECTION OF AN IMPLEMENT TO A TRACTOR, THE COMBINATION COMPRISING A PIVOTAL DRAFT ARM FOR UP AND DOWN MOVEMENT, SUPPORT MEANS INCLUDING A LINK PIVOTALLY CONNECTED TO SAID DRAFT ARM AND BEING PIVOTALLY CONNECTED TO THE REMAINDER OF SAID SUPPORT MEANS, A PIN ROTATABLY MOUNTED ON SAID LIFT MEANS ON AN AXIS SPACED FROM THE AXIS OF THE PIVOTAL CONNECTION BETWEEN SAID LINK AND SAID REMAINDER OF SAID SUPPORT MEANS BEING SELECTIVELY FREE OF SAID LINK, SAID PIN AND SAID LINK RESPECTIVELY HAV-
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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |