US3152431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lawn mower
Assignee: Individual
•
Filing: 1962-05-02
•
Granted: 1964-10-13
•
Expires: 1982-05-02
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
2026-11-04 16:14
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D34/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A MOWING MACHINE COMPRISING, A BODY, WHEEL MEANS SUPPORTING THE SAME, A PRIME MOVER CARRIED BY THE BODY, A PAIR OF CUTTER UNITS HAVING THE BODY THEREBETWEEN, MEANS SUPPORTING EACH OF SAID UNITS FOR UP-AND-DOWN SWINGING MOVEMENT ON AN AXIS EXTENDING LONGITUDINALLY OF THE BODY, EACH OF SAID CUTTER UNITS EMBODYING A BAR MEMBER, A CUTTER ELEMENT OF CIRCULAR FORM CENTRALLY ATTACHED TO EACH END OF SAID BAR UPON THE UNDERSIDE THEREOF FOR FREE SPINNING ROTATION, A SUBSTANTIALLY VERTICAL SHAFT FOR EACH CUTTER UNIT SECURED AT ONE END TO THE CUTTER UNIT BAR MIDWAY BETWEEN THE ENDS OF THE LATTER AND SUP PORTED FOR ROTATION BY THE CUTTER UNIT SUPPORTING MEANS, AND A DRIVING COUPLING BETWEEN EACH OF SAID SHAFTS AND THE PRIME MOVER, SAID CUTTER ELEMENT BEING OF DISHED FORM WITH A CONVEX OUTER SURFACE TERMINATING IN A PERIPHERAL CUTTING EDGE AND BEING POSITIONED WITH THE CONCAVE SIDE DIRECTED DOWNWARD.
Claim 2
Dependent Claim
151 words
A MOWING MACHINE COMPRISING, A BODY, WHEEL MEANS SUPPORTING THE SAME, A PRIME MOVER CARRIED BY THE BODY, A PAIR OF CUTTER UNITS HAVING THE BODY THEREBETWEEN, MEANS SUPPORTING EACH OF SAID UNITS FOR UP-AND-DOWN SWINGING MOVEMENT ON AN AXIS EXTENDING LONGITUDINALLY OF THE BODY, EACH OF SAID CUTTER UNITS EMBODYING A BAR MEMBER, A CUTTER ELEMENT OF CIRCULAR FORM CENTRALLY ATTACHED TO EACH END OF SAID BAR UPON THE UNDERSIDE THEREOF FOR FREE SPINNING ROTATION, A SUBSTANTIALLY VERTICAL SHAFT FOR EACH CUTTER UNIT SECURED AT ONE END TO THE CUTTER UNIT BAR MIDWAY BETWEEN THE ENDS OF THE LATTER AND SUP PORTED FOR ROTATION BY THE CUTTER UNIT SUPPORTING MEANS, AND A DRIVING COUPLING BETWEEN EACH OF SAID SHAFTS AND THE PRIME MOVER, SAID CUTTER ELEMENT BEING OF DISHED FORM WITH A CONVEX OUTER SURFACE TERMINATING IN A PERIPHERAL CUTTING EDGE AND BEING POSITIONED WITH THE CONCAVE SIDE DIRECTED DOWNWARD.
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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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |