US3702161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wing lift linkage
Assignee: Doosan Bobcat North America Inc
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Filing: 1971-06-29
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Granted: 1972-11-07
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Expires: 1991-06-29
Abstract
Abstract A MULTI-SECTION IMPLEMENT HAVING AN IMPROVED LIFT MECHANISM FOR RAISING AT LEAST ONE OF SAID SECTIONS FROM A LOWERED FIELD POSITION TO A RAISED TRANSPORT POSITION, SAID IMPROVED LIFT MECHANISM INCLUDING A BELLCRANK PIVOTALLY SECURED TO SAID SECTION TO BE RAISED, MEANS FOR GUIDING ONE END OF SAID BELLCRANK FOR PREDETERMINED MOVEMENT, AND ACTUATING MEANS CONNECTED WITH A SECOND END OF SAID BELLCRANK FOR MOVING SAID BELLCRANK AND THEREBY RAISING SAID SECTION TO BE RAISED, WHEREBY A MECHANICAL ADVANTAGE IS REALIZED IN TERMS OF FORCE NECESSARY TO RAISE SAID SECTION AND MOVEMENT OF SAID ACTUATING MEANS.
Inventors
- 👤 Ralph K Zachary
- 👤 John F Luoma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:53
CPC Classifications
A; A01; A01B; A01B73/00; A01B73/02; A01B73/04; A01B73/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |