US3753268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner suction tool with oppositely rotating pile agitators for cleaning deep pile shag rugs
Assignee: Cons Foods Corp
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Filing: 1971-12-03
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Granted: 1973-08-21
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Expires: 1991-12-03
Abstract
Abstract In accordance with the present invention there is provided a suction cleaning tool having an elongated suction nozzle on either side of which and closely adjacent thereto, is a rotatably mounted member for contacting the pile of the rug. These members are caused to rotate in mutually opposite directions with their lower sides turning away from the nozzles. The nozzle and rotating members depend from a base wyich is provided with means, such as wheels or runners at opposite ends thereof, for movably supporting the tool on the rug. The rotating members may be driven by an electric motor or by the wheels through suitable drives which rotate them in opposite directions.
Inventors
- 👤 F Bayless
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:56
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0461; A47L9/0488; A47L9/0427; A47L9/0433; A47L9/0444
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
81 words
In a suction cleaning tool for cleaning high pile shag rugs, a base, means for movably supporting said base above the surface of a rug, an elongated suction nozzle depending from said base, a pair of pile contacting elongated members rotatably mounted on said base entirely outside said nozzle and closely adjacent either side of and parallel to said nozzle, and means for rotating said members in mutually opposite directions, the lower portion of each member turning away from said nozzle.
Claim 2
Dependent Claim
81 words
In a suction cleaning tool for cleaning high pile shag rugs, a base, means for movably supporting said base above the surface of a rug, an elongated suction nozzle depending from said base, a pair of pile contacting elongated members rotatably mounted on said base entirely outside said nozzle and closely adjacent either side of and parallel to said nozzle, and means for rotating said members in mutually opposite directions, the lower portion of each member turning away from said nozzle.
Claim 3
Dependent Claim
25 words
A suction tool as defined in claim 1 in which each of said pile contacting members includes a plurality of circumferentially spaced radially extending blades.
Claim 4
Dependent Claim
27 words
A suction tool as defined in claim 1 in which each of said pile contacting members includes a plurality of circumferentially spaced radially extending rows of bristles.
Claim 5
Dependent Claim
44 words
A suction tool as defined in claim 1 which said means for supporting said base comprises a pair of relatively narrow wheels rotatably mounted at opposite ends of the tool, the axis of said wheels being between the axis of said pile contacting members.
References Cited (Backward Citations)
US1891503A
Cited
US2941232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |