Patent US3144258A successfully refreshed from Google Patents.
US3144258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary electric lawn mower
Assignee: Sunbeam Corp
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Filing: 1961-08-28
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Granted: 1964-08-11
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Expires: 1981-08-28
Abstract
No abstract record available.
Inventors
- 👤 Frederick O Ottosen
- 👤 Charles A Mattson
- 👤 Laama Vello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:18
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/82; A01D34/824; A01D2101/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A LAWN MOWER COMPRISING A HOUSING, A HANDLE HAVING HANDLE GRIPS AND SPACED END PORTIONS, MEANS PIVOTALLY CONNECTING SAID END PORTIONS TO SAID HOUSING, A LATCH SLIDABLY SECURED TO AT LEAST ONE OF SAID LOWER END PORTIONS, SAID LATCH BEING SLIDABLE BETWEEN UPPER AND LOWER POSITIONS, MEANS ON SAID LATCH ENGAGING SAID HOUSING WHEN SAID LATCH IS IN THE UPPER POSITION TO RESTRAIN DOWNWARD MOVEMENT OF SAID HANDLE IN TWO ANGULARLY SPACED DRIVE POSITIONS, AND MEANS ON SAID LATCH ENGAGING SAID HOUSING IN THE LOWER POSITION OF SAID LATCH TO LOCK SAID HANDLE AGAINST PIVOTAL MOVEMENT.
Claim 2
Dependent Claim
96 words
A LAWN MOWER COMPRISING A HOUSING, A HANDLE HAVING HANDLE GRIPS AND SPACED END PORTIONS, MEANS PIVOTALLY CONNECTING SAID END PORTIONS TO SAID HOUSING, A LATCH SLIDABLY SECURED TO AT LEAST ONE OF SAID LOWER END PORTIONS, SAID LATCH BEING SLIDABLE BETWEEN UPPER AND LOWER POSITIONS, MEANS ON SAID LATCH ENGAGING SAID HOUSING WHEN SAID LATCH IS IN THE UPPER POSITION TO RESTRAIN DOWNWARD MOVEMENT OF SAID HANDLE IN TWO ANGULARLY SPACED DRIVE POSITIONS, AND MEANS ON SAID LATCH ENGAGING SAID HOUSING IN THE LOWER POSITION OF SAID LATCH TO LOCK SAID HANDLE AGAINST PIVOTAL MOVEMENT.
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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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |