US4318202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion device for cannister vacuum cleaners
Assignee: TRANS-WORLD SEWING MACHINE Co Inc 6812 WEST 75TH STREET OVERLAND PARK KS A CORP OF KS
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Filing: 1980-10-16
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Granted: 1982-03-09
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Expires: 2000-10-16
Abstract
Abstract A device is provided to allow the use of a cannister vacuum cleaner in the manner of a highly-maneuverable, height-adjustable upright vacuum cleaner. The device preferably includes a mobile base having a cannister vacuum-receiving recess for releasably supporting a cannister vacuum cleaner. A power head including a beater bar, a motor for operatively driving the beater bar, and a nozzle, is attached to the base in an operational cleaning position. A conduit connects the power head to the cannister cleaner for vacuum removal of dirt or the like from a floor surface. Wheels and height-adjusting structure are provided on the base allowing adjustment of the clearance of the power head with respect to an underlying floor surface to maximize cleaning efficiency.
Inventors
- 👤 Donald M. Holman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:54
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/009
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
134 words
A conversion device for a cannister vacuum cleaner, said cleaner including means defining an inlet opening, and means for creating negative pressure conditions at said inlet opening, comprising: a mobile base having structure thereon for releasably supporting said cannister vacuum cleaner thereon; a powered cleaning device including shiftable means for contacting a floor surface, and for loosening dirt or the like thereon; motive means operatively connected to said shiftable means for operating the latter; structure defining a passageway for vacuum removal of said dirt or the like from said floor surface; means for mounting said cleaning device on said base in a position for cleaning of said floor surface; and conduit means for releasably and operatively connecting said passageway-defining structure and said inlet opening, when a cannister vacuum cleaner is supported on said base.
Claim 2
Dependent Claim
134 words
A conversion device for a cannister vacuum cleaner, said cleaner including means defining an inlet opening, and means for creating negative pressure conditions at said inlet opening, comprising: a mobile base having structure thereon for releasably supporting said cannister vacuum cleaner thereon; a powered cleaning device including shiftable means for contacting a floor surface, and for loosening dirt or the like thereon; motive means operatively connected to said shiftable means for operating the latter; structure defining a passageway for vacuum removal of said dirt or the like from said floor surface; means for mounting said cleaning device on said base in a position for cleaning of said floor surface; and conduit means for releasably and operatively connecting said passageway-defining structure and said inlet opening, when a cannister vacuum cleaner is supported on said base.
Claim 3
Dependent Claim
18 words
The conversion device as set forth in claim 1, including a plurality of wheels secured to said base.
Claim 4
Dependent Claim
23 words
The conversion device as set forth in claim 1, including shiftable means for adjusting the ground clearance height of said powered cleaning device.
Claim 5
Dependent Claim
16 words
The conversion device as set forth in claim 1, including handle means secured to said base.
Claim 6
Dependent Claim
25 words
The conversion device as set forth in claim 1, wherein said shiftable means comprises an elongated, axially rotatable cylinder having peripheral floor surface-engaging elements thereon.
Claim 7
Dependent Claim
17 words
The conversion device as set forth in claim 1, said base including walls defining a cannister-receiving recess.
Claim 8
Dependent Claim
19 words
The conversion device as set forth in claim 1, said device being mounted in front of said cannister-supporting structure.
References Cited (Backward Citations)
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Cited
US2920337A
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US3039130A
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US3063082A
Cited
US3310828A
Cited
US3358316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-03-08 | 1985-09-07 | 1986-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-08 | 1989-09-07 | 1990-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-08 | 1993-09-07 | 1994-03-09 | $7700.00 | Window Closed / Lapsed |