Patent US3390515A successfully refreshed from Google Patents.
US3390515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breakaway mechanism
Assignee: Case LLC
•
Filing: 1965-10-20
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Granted: 1968-07-02
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Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Aaron M Schaible
- 👤 Marvin L Janssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:48
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/02; A01D34/03; A01D34/07; A01D75/00; A01D75/18; A01D75/185
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
174 words
AN IMPROVED BREAKAWAY MEANS FOR A MOWER OF THE TYPE HAVING A FRAME AND A RECIPROCABLE CUTTER BAR CARRIED ON THE FRAME, SAID BREAKAWAY MEANS INCLUDING: A FIRST PLATE ON SAID FRAME FOR MOUNTING SAID BREAKAWAY MEANS, SAID FIRST PLATE HAVING A SLOT THEREIN, A SECOND PLATE CONNECTED TO SAID FIRST PLATE AND MOVABLE ALONG SAID SLOT, A LINK HAVING ONE END CONNECTED TO SAID SECOND PLATE, AN ARM HAVING ONE END CONNECTED TO SAID CUTTER BAR AND THE OTHER END CONNECTED TO THE OTHER END OF SAID LINK, A FIRST SPRING HAVING ONE END CONNECTED TO SAID SECOND PLATE AND EXTENDING GENERALLY FORWARDLY OF SAID FIRST PLATE, AND URGING SAID SECOND PLATE TOWARD ONE END OF SAID SLOT, RELEASE MEANS ON SAID FIRST PLATE POSITIONED TO ENGAGE WITH SAID SECOND PLATE, AND A SECOND SPRING HAVING ONE END CONNECTED TO SAID RELEASE MEANS AND THE OTHER END CONNECTED TO SAID ARM WHEREBY PRESSURE ON SAID CUTTER BAR WILL CAUSE SAID CUTTER BAR TO PIVOT AFTER SAID SECOND PLATE DISENGAGES FROM SAID RELEASE MEANS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |