US5089037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Industrial vacuum cleaning apparatus
Assignee: Individual
•
Filing: 1991-05-28
•
Granted: 1992-02-18
•
Expires: 2011-05-28
Abstract
Abstract A vacuum cleaner comprising a dust receiving container having an aperture for connecting a suction hose and an opening at the top for releasably supporting a motor-fan unit. A frame surrounding the container is provided with a vertically sliding structure for raising the motor-fan unit above the container at a distance sufficient to allow the container to be withdrawn sideways below the motor-fan unit. The motor-fan unit includes a dust filter, which when raised above the container, can be cleaned while allowing the dust to fall in the container.
Inventors
- 👤 Guy H. Marsolais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:16
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/20; A47L5/00; A47L5/12; A47L5/22; A47L5/36; Y; Y10; Y10S; Y10S15/00; Y10S15/01; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
206 words
A vacuum cleaning device comprising, a wheeled cart having a platform, a dust receiving container opened at its upper end and provided with an aperture for connecting a suction hose, said container being freely mounted on said platform, a motor-fan unit mounted over said upper end of said container and removably fixed thereon, said unit adapted to create a suction in said container, said unit comprising a dust filtering cover adapted to retain the dust entering from said suction hose, an upstanding frame fixed to said platform and laterally disposed relative to said container, said frame comprising four upstanding guiding sleeve members peripherally disposed around said container and fixed to said platform, a structure fixed to said frame for supporting said motor-fan unit, said structure having a set of four vertical beams slidingly mounted relative to said guiding sleeve members, and a set of horizontal beams connecting said vertical beams for supporting said motor-fan unit at a level suitable for sealingly lock said cover on said container, and means slidingly mounted on said structure for raising said motor-fan unit above said upper end of said container at a distance sufficient to clear the container, said container being adapted to slide on said platform adjacent said frame.
Claim 2
Dependent Claim
206 words
A vacuum cleaning device comprising, a wheeled cart having a platform, a dust receiving container opened at its upper end and provided with an aperture for connecting a suction hose, said container being freely mounted on said platform, a motor-fan unit mounted over said upper end of said container and removably fixed thereon, said unit adapted to create a suction in said container, said unit comprising a dust filtering cover adapted to retain the dust entering from said suction hose, an upstanding frame fixed to said platform and laterally disposed relative to said container, said frame comprising four upstanding guiding sleeve members peripherally disposed around said container and fixed to said platform, a structure fixed to said frame for supporting said motor-fan unit, said structure having a set of four vertical beams slidingly mounted relative to said guiding sleeve members, and a set of horizontal beams connecting said vertical beams for supporting said motor-fan unit at a level suitable for sealingly lock said cover on said container, and means slidingly mounted on said structure for raising said motor-fan unit above said upper end of said container at a distance sufficient to clear the container, said container being adapted to slide on said platform adjacent said frame.
Claim 3
Dependent Claim
56 words
A vacuum cleaning device as recited in claim 1, wherein said means for raising said motor-fan unit comprises a set of cable and pulleys for upwardly pulling said vertical beams in said guiding sleeve members and a winding reel connected to said cables for vertically moving said structure and said motor-fan unit vertically above said container.
Claim 4
Dependent Claim
79 words
A vacuum cleaning device as recited in claim 2, wherein said pulleys includes a first pair of pulleys laterally mounted on said frame and a second pair of pulleys mounted on said platform, said cables including a pair of cables, each cable being hooked at one end to said structure and extending through one pulley of each pair of pulleys, whereby the actuation of said reel vertically displaces said cover over said container for clearing said unit above container.
Claim 5
Dependent Claim
41 words
A vacuum cleaning device as recited in claim 2, wherein said dust cover comprises a piece of cloth filteringly sealing the lower part of the motor-fan unit for preventing the dust particles from moving from said container outwardly through said unit.
Claim 6
Dependent Claim
41 words
A vacuum cleaning device as recited in claim 3, wherein two of said vertical beams are spaced from each other to allow retraction of said container from said platform when said unit is raised above the container to clean the latter.
Claim 7
Dependent Claim
25 words
A vacuum cleaning device as recited in claim 4, wherein said unit is D.C. actuatable with batteries mounted on said platform for actuating said unit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-17 | 1995-08-19 | 1996-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-17 | 1999-08-19 | 2000-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-17 | 2003-08-19 | 2004-02-18 | $7700.00 | Window Closed / Lapsed |