Patent US3170276A successfully refreshed from Google Patents.
US3170276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air supported lawn mower
Assignee: Individual
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Filing: 1962-06-18
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Granted: 1965-02-23
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Expires: 1982-06-18
Abstract
No abstract record available.
Inventors
- 👤 Russell V Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:21
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/695; A01D2101/00; Y; Y10; Y10S; Y10S56/00; Y10S56/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN A POWER MOWER, IN COMBINATION: HOUSING MEANS COMPRISING SPACED, STATIONARY MEMBERS PROVIDING FIRST AND SECOND CHAMBERS; A ROTARY POWER SOURCE MOUNTED ON SAID HOUSING MEANS; ROTARY CUTTING MEANS DISPOSED IN SAID FIRST CHAMBER AND OPERATIVELY CONNECTED WITH SAID POWER SOURCE; ROTARY IMPELLER MEANS FOR INDUCING A FLOW OF PRESSURE FLUID; SAID ROTARY IMPELLER MEANS DISPOSED IN SAID SECOND CHAMBER AND OPERATIVELY CONNECTED WITH SAID POWER SOURCE; DISCHARGE MEANS FOR COMMUNICATING PRESSURE FLUID FROM AND SECOND CHAMBER AGAINST A SUPPORTING SURFACE FOR EFFECTING A LIFTING REACTANCE AGAINST SAID HOUSING MEANS SUFFICIENT TO SUPPORT THE WEIGHT OF SAID MOWER.
Claim 2
Dependent Claim
98 words
IN A POWER MOWER, IN COMBINATION: HOUSING MEANS COMPRISING SPACED, STATIONARY MEMBERS PROVIDING FIRST AND SECOND CHAMBERS; A ROTARY POWER SOURCE MOUNTED ON SAID HOUSING MEANS; ROTARY CUTTING MEANS DISPOSED IN SAID FIRST CHAMBER AND OPERATIVELY CONNECTED WITH SAID POWER SOURCE; ROTARY IMPELLER MEANS FOR INDUCING A FLOW OF PRESSURE FLUID; SAID ROTARY IMPELLER MEANS DISPOSED IN SAID SECOND CHAMBER AND OPERATIVELY CONNECTED WITH SAID POWER SOURCE; DISCHARGE MEANS FOR COMMUNICATING PRESSURE FLUID FROM AND SECOND CHAMBER AGAINST A SUPPORTING SURFACE FOR EFFECTING A LIFTING REACTANCE AGAINST SAID HOUSING MEANS SUFFICIENT TO SUPPORT THE WEIGHT OF SAID MOWER.
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |