US3840935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet cleaning machine
Assignee: Rolling Systems Inc
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Filing: 1972-03-16
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Granted: 1974-10-15
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Expires: 1992-03-16
Abstract
Abstract There is disclosed a carpet cleaner utilizing hot water. The cleaner has a floor unit in which hot water is sprayed onto the carpet within a housing and is removed by a vacuum cleaner which draws air into the housing to entrain the water and transport it to a separating tank for disposal. Vigorous cleaning action and efficient water pick-up are obtained by provision of a partition of critical shape and dimension between the spray compartment and water pickup compartment of the floor unit. Also disclosed are improved waste water separation tank, an oscillating scrubbing brush for the unit, and an embodiment operable directly from hot water and sewer lines.
Inventors
- 👤 M Fitzgerald
- 👤 C Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:17
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4044; A47L11/34; A47L11/408; A47L11/4088
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
264 words
Apparatus for continuously and simultaneously applying a cleaning liquid to a carpet, effecting cleaning action by the liquid upon the carpet, and removing cleaning liquid carrying carpet soil from the carpet comprising: a generally rectangular housing presenting a downwardly open face to the carpet to be cleaned, said housing having means for translating it across said carpet in a direction parallel to its sides, and transverse to its ends; partition means within said housing extending across its direction of translation dividing the interior of the housing into a first compartment for cleaning liquid application and a second compartment for cleaning liquid removal, the lower edge of said partition means being spaced above the carpet surface to establish a zone of turbulent air movement and vigorous liquid cleaning action adjacent said lower edge; the surface of said partition means facing said first compartment defining an angle with the carpet between about 40* and about 50*; means for admitting air into said first compartment; means in said first compartment for directing a spray of cleaning liquid against the carpet, said spray directing means being mounted to project cleaning liquid toward said carpet in a direction generally parallel to the surface of said partition means; a vane in said first compartment mounted at an angle to the carpeT between about 40* and about 50*, and positioned to be spaced from, but between, the path of projected cleaning liquid established by said spray direction means, and the surface of said partition means facing said first compartment; and means for connecting said second compartment to a source of vacuum.
Claim 2
Dependent Claim
264 words
Apparatus for continuously and simultaneously applying a cleaning liquid to a carpet, effecting cleaning action by the liquid upon the carpet, and removing cleaning liquid carrying carpet soil from the carpet comprising: a generally rectangular housing presenting a downwardly open face to the carpet to be cleaned, said housing having means for translating it across said carpet in a direction parallel to its sides, and transverse to its ends; partition means within said housing extending across its direction of translation dividing the interior of the housing into a first compartment for cleaning liquid application and a second compartment for cleaning liquid removal, the lower edge of said partition means being spaced above the carpet surface to establish a zone of turbulent air movement and vigorous liquid cleaning action adjacent said lower edge; the surface of said partition means facing said first compartment defining an angle with the carpet between about 40* and about 50*; means for admitting air into said first compartment; means in said first compartment for directing a spray of cleaning liquid against the carpet, said spray directing means being mounted to project cleaning liquid toward said carpet in a direction generally parallel to the surface of said partition means; a vane in said first compartment mounted at an angle to the carpeT between about 40* and about 50*, and positioned to be spaced from, but between, the path of projected cleaning liquid established by said spray direction means, and the surface of said partition means facing said first compartment; and means for connecting said second compartment to a source of vacuum.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |