Patent US3140575A successfully refreshed from Google Patents.
US3140575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutter unit for rotary mowers
Assignee: Individual
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Filing: 1962-12-27
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Granted: 1964-07-14
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Expires: 1982-12-27
Abstract
No abstract record available.
Inventors
- 👤 Vivian L Ott
- 👤 Jr John Branch Beaman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:19
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/73; A01D2101/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A CUTTER UNIT FOR A ROTARY POWER MOWER, COMPRISING AN ELONGATE BAR HAVING TOP AND BOTTOM SIDES, A PAIR OF CUTTER DISC ELEMENTS OF SUBSTANTIALLY CONCAVO-CONVEX FORM AND HAVING SHARPENED CIRCULAR PERIPHERAL CUTTING EDGES, EACH DISC ELEMENT BEING POSITIONED OVER THE TOP OF ONE OF TWO END PORTIONS OF THE BAR WITH ITS CONCAVE SIDE DIRECTED DOWNWARDLY, PIVOT MEANS COUPLING THE CENTER OF EACH DISC TO SAID PORTION OF THE BAR FOR ROTATION ON AN AXIS WHICH IS INCLINED FROM THE VERTICAL WITH RESPECT TO THE TOP AND BOTTOM SIDES OF THE BAR AND TOWARD A LONGITUDINAL SIDE OF THE BAR WHEREBY THE DISC IS DISPOSED AT AN INCLINATION TO THE TOP OF THE BAR AND SAID AXES FURTHER BEING OPPOSITELY INCLINED WITH RESPECT TO ONE ANOTHER, AND SAID BAR HAVING OPPOSITE LONGITUDINAL EDGES OF THE SAID END PORTIONS THEREOF, SHARPENED TO FORM CUTTING EDGES AND SAID CUTTING EDGES BEING ON THE ADVANCING SIDES OF THE BAR IN THE OPERATION OF THE UNIT.
Claim 2
Dependent Claim
163 words
A CUTTER UNIT FOR A ROTARY POWER MOWER, COMPRISING AN ELONGATE BAR HAVING TOP AND BOTTOM SIDES, A PAIR OF CUTTER DISC ELEMENTS OF SUBSTANTIALLY CONCAVO-CONVEX FORM AND HAVING SHARPENED CIRCULAR PERIPHERAL CUTTING EDGES, EACH DISC ELEMENT BEING POSITIONED OVER THE TOP OF ONE OF TWO END PORTIONS OF THE BAR WITH ITS CONCAVE SIDE DIRECTED DOWNWARDLY, PIVOT MEANS COUPLING THE CENTER OF EACH DISC TO SAID PORTION OF THE BAR FOR ROTATION ON AN AXIS WHICH IS INCLINED FROM THE VERTICAL WITH RESPECT TO THE TOP AND BOTTOM SIDES OF THE BAR AND TOWARD A LONGITUDINAL SIDE OF THE BAR WHEREBY THE DISC IS DISPOSED AT AN INCLINATION TO THE TOP OF THE BAR AND SAID AXES FURTHER BEING OPPOSITELY INCLINED WITH RESPECT TO ONE ANOTHER, AND SAID BAR HAVING OPPOSITE LONGITUDINAL EDGES OF THE SAID END PORTIONS THEREOF, SHARPENED TO FORM CUTTING EDGES AND SAID CUTTING EDGES BEING ON THE ADVANCING SIDES OF THE BAR IN THE OPERATION OF THE UNIT.
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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |