Patent US2292897A successfully refreshed from Google Patents.
US3972088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric floor scrubber
Assignee: Individual
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Filing: 1974-10-08
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Granted: 1976-08-03
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Expires: 1994-10-08
Abstract
Abstract An electric floor scrubber and buffer having its scrubber or buffer pad attached to the underside of an oscillating plate. A motor drive is provided for oscillating the plate which is disposed between flexible spacers extending between the plate and a stationary plate. The spacers serve to enhance the action of the oscillator plate and its underpad in performing their buffing or scrubbing functions.
Inventors
- 👤 Clarence Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:45
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/02; A47L11/10; A47L11/12; A47L11/4044; A47L11/4063; A47L11/4069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
An electric floor scrubber comprising a stationary plate, an oscillator plate, flexible spacers connecting said plates, a cleaning pad attached to the underside of said oscillator plate, a pivotal clamp at each end of the scrubber for clamping said pad in position, a motor and shaft depending from said stationary plate, a crank arm connected at right angles to and eccentrically of said shaft and universally connected to said oscillator plate, the latter being thereby oscillated linearly, and a scraper pivotally mounted on the stationary plate and adapted to be engaged and linearly vibrated by one of said clamps due to the periodic movement of said oscillator plate.
Claim 2
Dependent Claim
108 words
An electric floor scrubber comprising a stationary plate, an oscillator plate, flexible spacers connecting said plates, a cleaning pad attached to the underside of said oscillator plate, a pivotal clamp at each end of the scrubber for clamping said pad in position, a motor and shaft depending from said stationary plate, a crank arm connected at right angles to and eccentrically of said shaft and universally connected to said oscillator plate, the latter being thereby oscillated linearly, and a scraper pivotally mounted on the stationary plate and adapted to be engaged and linearly vibrated by one of said clamps due to the periodic movement of said oscillator plate.
References Cited (Backward Citations)
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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) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |