US3208209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary safety blade
Assignee: Atlantic Richfield Co
•
Filing: 1963-05-01
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Granted: 1965-09-28
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Expires: 1983-05-01
Abstract
No abstract record available.
Inventors
- 👤 Henry F Dunlap
- 👤 Alpheus A Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:26
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/416
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
AN IMPROVED CUTTER FOR A ROTARY MOWER ADATPED TO ROTATE IN A SUBSTANTIALLY HORIZONTAL PLANE ABOUT A VERTICALLY-DISPOSED SHAFT AND TO CUT GRASS COMPRISING A CIRCULAR BODY ADAPTED FOR ATTACHMENT TO SAID SHAFT AND HAVING A SMOOTH, GENERALLY CIRCULAR RIM, AND A PLURALITY OF WIRE CUTTING ELEMENTS RADIATING FROM SAID RIM, SAID WIRE CUTTING ELEMENTS BEING LOOPS OF WIRE HAVING TOW ENDS AND HAVING A STRAIGHT LEADING PORTION WITH RESPECT TO THE DIRECTION OF ROTATION OF THE CUTTER, SAID LEADING POR
Claim 2
Dependent Claim
81 words
AN IMPROVED CUTTER FOR A ROTARY MOWER ADATPED TO ROTATE IN A SUBSTANTIALLY HORIZONTAL PLANE ABOUT A VERTICALLY-DISPOSED SHAFT AND TO CUT GRASS COMPRISING A CIRCULAR BODY ADAPTED FOR ATTACHMENT TO SAID SHAFT AND HAVING A SMOOTH, GENERALLY CIRCULAR RIM, AND A PLURALITY OF WIRE CUTTING ELEMENTS RADIATING FROM SAID RIM, SAID WIRE CUTTING ELEMENTS BEING LOOPS OF WIRE HAVING TOW ENDS AND HAVING A STRAIGHT LEADING PORTION WITH RESPECT TO THE DIRECTION OF ROTATION OF THE CUTTER, SAID LEADING POR
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |