Patent US3643276A successfully refreshed from Google Patents.
US3643276A
Expired / Lapsed
US
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Floor-cleaning machine
Assignee: Progress Elektrogeraete Mauz and Pfeiffer GmbH and Co
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Filing: 1970-04-06
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Granted: 1972-02-22
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Expires: 1990-04-06
Abstract
Abstract A floor-cleaning machine with a cleaning tool which is adapted to be driven by a motor and is rotatably journaled between two supporting arms, said supporting arms being provided with plug-in coupling means for rotatably engaging and supporting said cleaning tool, said supporting arms together with said cleaning tool being pivotable selectively from a position within the housing to a position outside the housing and vice versa.
Inventors
- 👤 Eberhard Worwag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:22
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4075; A47L11/02; A47L11/10; A47L11/14; A47L11/18; A47L11/20; A47L11/32; A47L11/33; A47L11/4036; A47L11/4041; A47L11/4052; A47L11/4055; A47L11/4063; A47L11/4069; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
147 words
A floor cleaning machine, which includes: housing means having a bottom with a cutout therein, two supporting arms pivotally supported by said housing means, motor means located within said housing means, cleaning tool means drivingly connectable to said motor means and rotatably supported by said arms, said arms being pivotable from a first position in which said cleaning tool means is within said housing means and partially extends through said cutout to a second position in which said cleaning tool means is outside said housing means and vice versa, at least one end portion of said cleaning tool means being provided with coaxial recess means, and at least one of said arms adjacent said recess means including plug-in coupling means for selectively engaging said cleaning tool means to rotatably support the same and disengaging said cleaning tool means to selectively service or exchange said cleaning tool means.
Claim 2
Dependent Claim
147 words
A floor cleaning machine, which includes: housing means having a bottom with a cutout therein, two supporting arms pivotally supported by said housing means, motor means located within said housing means, cleaning tool means drivingly connectable to said motor means and rotatably supported by said arms, said arms being pivotable from a first position in which said cleaning tool means is within said housing means and partially extends through said cutout to a second position in which said cleaning tool means is outside said housing means and vice versa, at least one end portion of said cleaning tool means being provided with coaxial recess means, and at least one of said arms adjacent said recess means including plug-in coupling means for selectively engaging said cleaning tool means to rotatably support the same and disengaging said cleaning tool means to selectively service or exchange said cleaning tool means.
Claim 3
Dependent Claim
28 words
A floor-cleaning machine according to claim 1, in which that arm which includes said plug-in coupling means is pivotable selectively toward and away from said cleaning tool means.
Claim 4
Dependent Claim
26 words
A machine according to claim 1, in which at least one plug-in coupling means is provided with transmission means for driving connection with said motor means.
Claim 5
Dependent Claim
15 words
A floor-cleaning machine according to claim 3, in which said transmission means comprises a pulley.
Claim 6
Dependent Claim
35 words
A floor-cleaning machine according to claim 1, in which said supporting arms together with said cleaning tool means are pivotable to such an extent that said cleaning tool means is outside of said housing means.
Claim 7
Dependent Claim
16 words
A floor-cleaning machine according to claim 1, in which said supporting arms are of resilient material.
Claim 8
Dependent Claim
17 words
A floor-cleaning machine according to claim 1, in which said supporting arms are of resilient synthetic material.
Claim 9
Dependent Claim
35 words
A floor-cleaning machine according to claim 1, in which said plug-in coupling means comprises a crowned extension rotatably journaled in one end portion of the respective supporting arm and adapted to engage the respective cutout.
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |