US3931659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor treating machine
Assignee: DIETHELM AG
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Filing: 1974-06-24
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Granted: 1976-01-13
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Expires: 1994-06-24
Abstract
Abstract A floor treating machine supported at the floor or surface to be treated by means of a work disk arranged beneath a substantially ring-shaped stop member, the work disk being detachably coupled with a drive motor. There are provided two selectively insertable work disks of different diamter and a ring-shaped stop member is provided for each such work disk.
Inventors
- 👤 Kurt Pfefferkorn
- 👤 Charles Serou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:34
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/24; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/40; A47L11/4063; A47L11/4069
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
151 words
A floor treating machine capable of being supported at the floor to be treated by means of a work disk, said work disk being arranged adjacent a substantially ring-shaped stop, the improvement comprising: said machine possessing a machine housing, said machine being provided with two work disks of different diameter which are selectively insertable at least partially into the machine housing, one of said work disks defining a smaller diameter work disk and the other of said work disks defining a larger diameter work disk, a separate substantially ring-shaped stop provided for each such different diameter work disk, the ring-shaped stop provided for the smaller diameter work disk defining a smaller ring-shaped stop relative to the other ring-shaped stop provided for the larger diameter work disk defining a larger ring-shaped stop, and at least the ring-shaped stop provided for the smaller diameter work disk being fixedly secured to said machine housing.
Claim 2
Dependent Claim
151 words
A floor treating machine capable of being supported at the floor to be treated by means of a work disk, said work disk being arranged adjacent a substantially ring-shaped stop, the improvement comprising: said machine possessing a machine housing, said machine being provided with two work disks of different diameter which are selectively insertable at least partially into the machine housing, one of said work disks defining a smaller diameter work disk and the other of said work disks defining a larger diameter work disk, a separate substantially ring-shaped stop provided for each such different diameter work disk, the ring-shaped stop provided for the smaller diameter work disk defining a smaller ring-shaped stop relative to the other ring-shaped stop provided for the larger diameter work disk defining a larger ring-shaped stop, and at least the ring-shaped stop provided for the smaller diameter work disk being fixedly secured to said machine housing.
Claim 3
Dependent Claim
28 words
The floor treating machine as defined in claim 1, further including means for detachably securing the larger ring-shaped stop for the larger work disk at the machine housing.
Claim 4
Dependent Claim
26 words
The floor treating machine as defined in claim 2, wherein the larger diameter ring-shaped stop comprises a stop ring member which surrounds the smaller ring-shaped stop.
Claim 5
Dependent Claim
24 words
The floor treating machine as defined in claim 3, wherein the larger ring-shaped stop is arranged to be supported at the smaller ring stop.
Claim 6
Dependent Claim
32 words
The floor treating machine as defined in claim 4, wherein the larger ring-shaped stop possesses a substantially pot-shaped configuration and has an end wall which is supported at the smaller ring-shaped stop.
Claim 7
Dependent Claim
27 words
The floor treating machine as defined in claim 5, wherein the larger ring-shaped stop and said machine housing have cooperating means for centering said larger ring-shaped stop.
Claim 8
Dependent Claim
61 words
The floor treating machine as defined in claim 6, wherein said centering means comprises said machine housing having holes, the larger ring-shaped stop having centering projections and plug-in pins provided at the end face of said larger ring-shaped stop, said centering projections engaging about the smaller ring-shaped stop, and said plug-in pins being insertable into said holes of the machine housing.
References Cited (Backward Citations)
US2221315A
Cited
US3798697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |