Patent US4045840A successfully refreshed from Google Patents.
US4045840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner tool for cleaning deep pile carpets
Assignee: Electrolux AB
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Filing: 1975-07-28
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Granted: 1977-09-06
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Expires: 1995-07-28
Abstract
Abstract A vacuum cleaner nozzle tool that is connected to a source of negative pressure and which functions to clean deep pile carpet or shag rugs in an efficient manner and which at the same time raises the pile of the rug or carpet in order to improve the appearance thereof. To achieve this objective the nozzle is provided with slide means of a particular configuration.
Inventors
- 👤 Erik Karl Gustav Johansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:26
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
179 words
A vacuum cleaner tool attachable to a source of negative pressure and for use with deep pile carpets or the like comprising an elongated tool housing which is operatively connected to said source of negative pressure, a plurality of suction nozzles each communicating with said tool housing, and terminating in an air intake opening; extending generally in a plane perpendicular to the underside of said housing, a plurality of surface engaging runners provided on the same side of said housing as said nozzles and each having a bottom surface thereof located at a greater distance below the underside of said housing than the air intake openings of said nozzles, each of said runners bridging a respective suction nozzle and disposed in a plane that is generally perpendicular to the length direction of said tool housing, and each of said runners dividing the respective suction nozzles in substantially equal sections whereby said runners slide in the direction of movement of said tool on the carpet work surface raising the pile and improving dirt removal from the interior of said carpet.
Claim 2
Dependent Claim
179 words
A vacuum cleaner tool attachable to a source of negative pressure and for use with deep pile carpets or the like comprising an elongated tool housing which is operatively connected to said source of negative pressure, a plurality of suction nozzles each communicating with said tool housing, and terminating in an air intake opening; extending generally in a plane perpendicular to the underside of said housing, a plurality of surface engaging runners provided on the same side of said housing as said nozzles and each having a bottom surface thereof located at a greater distance below the underside of said housing than the air intake openings of said nozzles, each of said runners bridging a respective suction nozzle and disposed in a plane that is generally perpendicular to the length direction of said tool housing, and each of said runners dividing the respective suction nozzles in substantially equal sections whereby said runners slide in the direction of movement of said tool on the carpet work surface raising the pile and improving dirt removal from the interior of said carpet.
Claim 3
Dependent Claim
20 words
A vacuum cleaner tool as claimed in claim 1 wherein each runner is positioned between a pair of suction nozzles.
Claim 4
Dependent Claim
34 words
A vacuum cleaner tool as claimed in claim 1, wherein the width of the runner is substantially less than the width of the suction nozzle, as viewed in the length direction of the housing.
Claim 5
Dependent Claim
65 words
A vacuum cleaner tool as claimed in claim 1, wherein said bottom surface is flat and each runner has portions at opposite ends of said flat bottom surface which are curved upwardly, an inwardly curved portion joined with each of said upwardly curved portions to attach said runner to a respective one of said nozzles and form a lip on each end of said runner.
Claim 6
Dependent Claim
31 words
A vacuum cleaner tool as claimed in claim 4, wherein said flat bottom surface is located at a greater distance from said housing than the inlet opening of said suction nozzle.
Claim 7
Dependent Claim
19 words
A vacuum cleaner tool as claimed in claim 1, wherein each of suction nozzles are substantially rectangular in cross-section.
Claim 8
Dependent Claim
183 words
A vacuum cleaner tool attachable to a source of negative pressure and for use with deep pile carpets or the like comprising an elongated tool housing which is operatively connected to said source of negative pressure, a plurality of suction nozzles each communicating with said tool housing, extending generally in a plane perpendicular to the underside of said housing, and terminating in an air intake opening; plurality of surface engaging runners provided at the same side of said housing as said nozzles and each having a bottom surface thereof located at a greater distance below the underside of said housing than the air intake inlet openings of said nozzles, each of said runners being disposed in a plane that is generally perpendicular to the length direction of said tool housing, and each of said suction nozzles being circular in cross-section while the respective runners are located outside but abutting the respective suction nozzles whereby said runners slide in the direction of movement of said tool on the carpet work surface raising the pile and improving dirt removal from the interior of said carpet.
Claim 9
Dependent Claim
183 words
A vacuum cleaner tool attachable to a source of negative pressure and for use with deep pile carpets or the like comprising an elongated tool housing which is operatively connected to said source of negative pressure, a plurality of suction nozzles each communicating with said tool housing, extending generally in a plane perpendicular to the underside of said housing, and terminating in an air intake opening; plurality of surface engaging runners provided at the same side of said housing as said nozzles and each having a bottom surface thereof located at a greater distance below the underside of said housing than the air intake inlet openings of said nozzles, each of said runners being disposed in a plane that is generally perpendicular to the length direction of said tool housing, and each of said suction nozzles being circular in cross-section while the respective runners are located outside but abutting the respective suction nozzles whereby said runners slide in the direction of movement of said tool on the carpet work surface raising the pile and improving dirt removal from the interior of said carpet.
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) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |