Patent US3145519A successfully refreshed from Google Patents.
US3145519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary lawn mower
Assignee: Sears Roebuck and Co
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Filing: 1962-06-18
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Granted: 1964-08-25
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Expires: 1982-06-18
Abstract
No abstract record available.
Inventors
- 👤 Donald G Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:20
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/71; A01D2101/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A ROTARY MOWER, COMPRISING (A) A HOUSING HAVING A SUBSTANTIALLY FLAT COVER AND A PERIPHERAL SKIRT DEPENDING FROM SAID COVER, (B) SAID SKIRT HAVING A DISCHARGE OPENING THEREIN, (C) A DRIVE SHAFT EXTENDING THROUGH SAID COVER INTO SAID HOUSING, (D) AN UPPER AND A LOWER BLADE IN SAID HOUSING AXIALLY SPACED ON SAID SHAFT FOR ROTATION THEREWITH, (E) THE UPPER BLADE BEING DISPOSED CLOSE TO SAID COVER AND EXTENDING CLOSE TO SAID SKIRT, FUNCTIONING TO PREVENT SUBSTANTIAL ACCUMULATION OF CUTTINGS ON THE INSIDE OF SAID COVER AND SKIRT, (F) THE LOWER BLADE BEING A CUTTER, (G) AT LEAST ONE OF SAID BLADES ALSO CREATING A CURRENT OF AIR UPWARDLY AND CENTRIFUGALLY OF THE HOUSING TO DISCHARGE THE CUTTINGS THROUGH SAID DISCHARGE OPENING, (H) A CHUTE EXTENDING LATERALLY FROM SAID HOUSING ADJACENT SAID DISCHARGE OPENING FOR DISCHARGING CUTTINGS REMOTELY FROM THE HOUSING,
Claim 2
Dependent Claim
141 words
A ROTARY MOWER, COMPRISING (A) A HOUSING HAVING A SUBSTANTIALLY FLAT COVER AND A PERIPHERAL SKIRT DEPENDING FROM SAID COVER, (B) SAID SKIRT HAVING A DISCHARGE OPENING THEREIN, (C) A DRIVE SHAFT EXTENDING THROUGH SAID COVER INTO SAID HOUSING, (D) AN UPPER AND A LOWER BLADE IN SAID HOUSING AXIALLY SPACED ON SAID SHAFT FOR ROTATION THEREWITH, (E) THE UPPER BLADE BEING DISPOSED CLOSE TO SAID COVER AND EXTENDING CLOSE TO SAID SKIRT, FUNCTIONING TO PREVENT SUBSTANTIAL ACCUMULATION OF CUTTINGS ON THE INSIDE OF SAID COVER AND SKIRT, (F) THE LOWER BLADE BEING A CUTTER, (G) AT LEAST ONE OF SAID BLADES ALSO CREATING A CURRENT OF AIR UPWARDLY AND CENTRIFUGALLY OF THE HOUSING TO DISCHARGE THE CUTTINGS THROUGH SAID DISCHARGE OPENING, (H) A CHUTE EXTENDING LATERALLY FROM SAID HOUSING ADJACENT SAID DISCHARGE OPENING FOR DISCHARGING CUTTINGS REMOTELY FROM THE HOUSING,
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |