Patent US4569100A successfully refreshed from Google Patents.
US4569100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum device
Assignee: WAYNE/SCOTT FETZER Co A CORP OF
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Filing: 1984-09-11
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Granted: 1986-02-11
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Expires: 2004-09-11
Abstract
Abstract A vacuum device comprised of a base portion and a top portion with an expandable means, connecting the base and top portions, for moving between a contracted position and an expanded position. The expandable means and the base and top portions define a chamber therebetween. A vacuum means is mounted to the top portion for sucking debris into the chamber. Support means, which is attached to the base and top portions and passes through the chamber, selectively maintains the expandable member in its expanded position.
Inventors
- 👤 Emerson J. Purkapile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:44
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/365
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
178 words
A portable vacuum device comprising: a base member having means for facilitating the movement of the vacuum device; an expandable member movable between a contracted and an expanded condition, said expandable member having opposite ends and being connected at one end thereof to said base member and at the other end thereof to a top member, said base member, top member and expandable member defining therebetween a debris chamber; said top member having mounted thereto a vacuum means for sucking debris into said chamber; and support means, mounted to said top and base members and essentially contained within said chamber, for moving between one position in which it maintains said expandable member in the expanded condition and another position, said support means includes a telescoping two-piece strut assembly movable between extended and contracted positions, said assembly having opposite top and bottom ends, said strut being mounted at the top end thereof to said top member and mounted at the bottom end thereof to said base member, and locking means for locking said strut assembly in the extended position.
Claim 2
Dependent Claim
178 words
A portable vacuum device comprising: a base member having means for facilitating the movement of the vacuum device; an expandable member movable between a contracted and an expanded condition, said expandable member having opposite ends and being connected at one end thereof to said base member and at the other end thereof to a top member, said base member, top member and expandable member defining therebetween a debris chamber; said top member having mounted thereto a vacuum means for sucking debris into said chamber; and support means, mounted to said top and base members and essentially contained within said chamber, for moving between one position in which it maintains said expandable member in the expanded condition and another position, said support means includes a telescoping two-piece strut assembly movable between extended and contracted positions, said assembly having opposite top and bottom ends, said strut being mounted at the top end thereof to said top member and mounted at the bottom end thereof to said base member, and locking means for locking said strut assembly in the extended position.
Claim 3
Dependent Claim
60 words
The portable vacuum device of claim 1 wherein said base member comprises a bottom housing having a top edge defining an open top and a closed bottom, said expandable member connected to said bottom housing at the top edge thereof, and a set of wheels mounted to said bottom housing so as to permit the vacuum device to be rollable.
Claim 4
Dependent Claim
33 words
The portable vacuum device of claim 1 wherein said top member includes a lower edge defining an open bottom and a generally closed top, and said generally closed top having an aperture therein.
Claim 5
Dependent Claim
44 words
The portable vacuum device of claim 3 wherein said vacuum means includes a motor assembly mounted to said top member and a tube attached to said top member and passing through said aperture, said tube providing communication between the environment and said debris chamber.
Claim 6
Dependent Claim
32 words
The portable vacuum device of claim 4 further including a hose connected at one end thereof to said tube, and a sucking head connected to the hose at the other end thereof.
Claim 7
Dependent Claim
33 words
The portable vacuum device of claim 1 further including limit switch means for controlling the operation of said vacuum means when the level of liquid in said debris chamber reaches a predetermined level.
Claim 8
Dependent Claim
24 words
The portable vacuum device of claim 1 wherein said expandable member comprises a bellows member, said bellows member made from a thermoplastic rubber material.
Claim 9
Dependent Claim
144 words
A vacuum device comprising: a base portion; a top portion; an expandable member movable between a contracted position and an expanded position, said expandable member and said base and top members defining a chamber therebetween; a vacuum means for sucking debris into said chamber; and a support means for selectively maintaining said expandable member in its expanded position, said support means includes a pair of strut assemblies movable between extended and contracted positions, each strut assembly includes a plurality of telescoping struts having an uppermost strut attached to said top portion and a lowermost strut attached to said base portion, said strut assembly being extendable between an extended position in which said expandable member is in its expanded position and a contracted position, and said strut assembly having a locking assembly operable so that said strut assembly can be locked in its extended position.
Claim 10
Dependent Claim
144 words
A vacuum device comprising: a base portion; a top portion; an expandable member movable between a contracted position and an expanded position, said expandable member and said base and top members defining a chamber therebetween; a vacuum means for sucking debris into said chamber; and a support means for selectively maintaining said expandable member in its expanded position, said support means includes a pair of strut assemblies movable between extended and contracted positions, each strut assembly includes a plurality of telescoping struts having an uppermost strut attached to said top portion and a lowermost strut attached to said base portion, said strut assembly being extendable between an extended position in which said expandable member is in its expanded position and a contracted position, and said strut assembly having a locking assembly operable so that said strut assembly can be locked in its extended position.
Claim 11
Dependent Claim
33 words
The vacuum device of claim 8 wherein said vacuum means includes a motor-impeller assembly mounted to said to portion, and a tube passing through and mounted to an aperture in said top portion.
Claim 12
Dependent Claim
35 words
The vacuum device of claim 9 further including a limit switch means, operatively connected to said motor-impeller assembly, for shutting off said assembly when the level of liquid in the chamber exceeds a preselected level.
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) | 1989-02-10 | 1989-08-12 | 1990-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-10 | 1993-08-12 | 1994-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-10 | 1997-08-12 | 1998-02-11 | $7700.00 | Window Closed / Lapsed |