Patent US5979014A successfully refreshed from Google Patents.
US5979014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile wet/dry vacuum device
Assignee: Nilfisk Inc
•
Filing: 1997-08-29
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Granted: 1999-11-09
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Expires: 2017-08-29
Abstract
Abstract A wet/dry vacuum device includes a canister unit that is pivotally mounted to an upstanding portion of a support carriage for movement between a lowered, in-use position and a raised, emptying position. Also pivotally attached to the upstanding portion of the support carriage is a lifting assist lever upon which the canister unit rests for movement between the lowered and raised positions. Interposed between the carriage and the lifting assist lever is a device, such as linear acting, fluid spring, for assisting in manually tilting the canister unit. The fluid spring is preferably interconnected to each of the carriage and the lifting assist lever through respective loss motion connections which enable a rather large tilting range for the canister unit while minimizing the required length of the fluid spring. The canister unit is readily removable from the remainder of the wet/dry vacuum device and is provided with a pouring spout extending rearwardly from an upper portion thereof to enhance the draining of the contents of the canister unit upon tilting of the canister unit or upon removal thereof from the carriage.
Inventors
- 👤 Steve Reichow
- 👤 Al C. Miller
- 👤 Keith E. Nygaard
- 👤 Don F. Ketcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:35
CPC Classifications
A; A47; A47L; A47L7/00; A47L7/0004; A47L7/0009; A47L7/0023; A47L7/0038; A47L7/0042; A47L9/00; A47L9/20
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
141 words
A mobile wet/dry vacuum device comprising, in combination: a support carriage including a base portion and an upstanding portion; a plurality of wheels mounted to the carriage to aid in maneuvering of the carriage upon a supporting surface; a canister unit pivotally mounted about an axis defined by the upstanding portion of the carriage for movement between a lowered position, in which the canister unit is arranged atop the base portion in a generally vertical condition for collection of both solid and liquid debris into the canister unit, and a raised position, in which the canister unit is tilted relative to the base portion for emptying the canister unit; and means for assisting in manually tilting the canister unit from the lowered position to the raised position, with the assisting means being interposed between the base portion and the canister unit.
Claim 2
Dependent Claim
141 words
A mobile wet/dry vacuum device comprising, in combination: a support carriage including a base portion and an upstanding portion; a plurality of wheels mounted to the carriage to aid in maneuvering of the carriage upon a supporting surface; a canister unit pivotally mounted about an axis defined by the upstanding portion of the carriage for movement between a lowered position, in which the canister unit is arranged atop the base portion in a generally vertical condition for collection of both solid and liquid debris into the canister unit, and a raised position, in which the canister unit is tilted relative to the base portion for emptying the canister unit; and means for assisting in manually tilting the canister unit from the lowered position to the raised position, with the assisting means being interposed between the base portion and the canister unit.
Claim 3
Dependent Claim
18 words
The wet/dry vacuum device according to claim 1 wherein the assisting means comprises a linear acting, fluid spring.
Claim 4
Dependent Claim
33 words
The wet/dry vacuum device according to claim 2, further comprising, in combination: at least one lost motion connection interconnecting the fluid spring to at least one of the base portion and canister unit.
Claim 5
Dependent Claim
35 words
The wet/dry vacuum device according to claim 3 wherein the at least one lost motion connection comprises a slotted bracket to which a respective end portion of the fluid spring is slidably and rotatably mounted.
Claim 6
Dependent Claim
51 words
The wet/dry vacuum device according to claim 4 wherein the slotted bracket of the at least one lost motion connection extends upwardly from the base portion and is angled towards the upstanding portion of the carriage for guiding the fluid spring during tilting of the canister unit to the raised position.
Claim 7
Dependent Claim
49 words
The wet/dry vacuum device according to claim 1 further comprising, in combination: a lifting plate having an upper end pivotally attached to the upstanding portion of the carriage, with the canister unit abutting and being supported upon the lifting plate for concurrent movement between the raised and lowered positions.
Claim 8
Dependent Claim
22 words
The wet/dry vacuum device according to claim 6 wherein the assisting means is interconnected between the base portion and the lifting plate.
Claim 9
Dependent Claim
34 words
The wet/dry vacuum device according to claim 7 further comprising, in combination: at least one lost motion connection interconnecting the assisting means and at least one of the base portion and the lifting plate.
Claim 10
Dependent Claim
41 words
The wet/dry vacuum device according to claim 1 wherein the canister unit is provided with a pouring spout at an upper rear portion thereof, with the pouring spout being located on an opposite side of the axis than the base portion.
Claim 11
Dependent Claim
40 words
The wet/dry vacuum device according to claim 9 wherein the pouring spout is angled upwardly and rearwardly when the canister unit is in the lowered position and reaches a substantially horizontal position with only limited tilting of the canister unit.
Claim 12
Dependent Claim
82 words
The wet/dry vacuum device according to claim 1 wherein the upstanding portion of the carriage is formed with a pair of laterally spaced ear portions provided with open ended cavities and the canister unit is formed with a pair of lugs which are received within the cavities, with the lugs aiding in defining the axis about which the canister unit pivots relative to the carriage, with the lugs being readily removable from tile cavities for detaching the canister unit from the carriage.
Claim 13
Dependent Claim
62 words
The wet/dry vacuum device according to claim 11 further comprising, in combination: a lifting plate having an upper end pivotally attached to the upstanding portion of the carriage, with the canister unit abutting and being supported upon the lifting plate for concurrent movement between the raised and lowered positions, and a fluid spring interconnected between the base portion and the lifting plate.
Claim 14
Dependent Claim
183 words
A mobile wet/dry vacuum device comprising, in combination: a support carriage including a base portion and an upstanding portion; a plurality of wheels mounted to the carriage to aid in maneuvering of the carriage upon a supporting surface; and a canister unit pivotally mounted about an axis defined by the upstanding portion of the carriage for movement between a lowered position, in which the canister unit is arranged atop the base portion in a generally vertical condition for collection of both solid and liquid debris into the canister unit, and a raised position, in which the canister unit is tilted relative to the base portion for emptying the canister unit, with the upstanding portion of the carriage being formed with a pair of laterally spaced car portions provided with open ended cavities and the canister unit is formed with a pair of lugs adapted to be received within the cavities and aiding in defining the axis about which the canister unit pivots relative to the carriage, with the lugs being readily removable from the cavities for detaching the canister unit from the carriage.
Claim 15
Dependent Claim
183 words
A mobile wet/dry vacuum device comprising, in combination: a support carriage including a base portion and an upstanding portion; a plurality of wheels mounted to the carriage to aid in maneuvering of the carriage upon a supporting surface; and a canister unit pivotally mounted about an axis defined by the upstanding portion of the carriage for movement between a lowered position, in which the canister unit is arranged atop the base portion in a generally vertical condition for collection of both solid and liquid debris into the canister unit, and a raised position, in which the canister unit is tilted relative to the base portion for emptying the canister unit, with the upstanding portion of the carriage being formed with a pair of laterally spaced car portions provided with open ended cavities and the canister unit is formed with a pair of lugs adapted to be received within the cavities and aiding in defining the axis about which the canister unit pivots relative to the carriage, with the lugs being readily removable from the cavities for detaching the canister unit from the carriage.
Claim 16
Dependent Claim
66 words
The wet/dry vacuum according to claim 13 further comprising, in combination: a lifting plate having an upper end pivotally attached to the upstanding portion of the carriage, with the canister unit abutting and being supported upon the lifting plate for concurrent movement between the raised and lowered positions, and means for assisting in manually tilting the canister unit from the lowered position to the raised position.
Claim 17
Dependent Claim
50 words
The wet/dry vacuum device according to claim 14 further comprising, in combination: first and second lost motion connections, with the first lost motion connection being interposed between the assisting means and the base portion and the second lost motion connection being interposed between the assisting means and the lifting plate.
Claim 18
Dependent Claim
67 words
The wet/dry vacuum device according to claim 13 wherein the upstanding portion of the carriage is angled upwardly and rearwardly, and the canister includes a tank portion having a substantially horizontal bottom portion and rear wall portion that also angles upwardly and rearwardly such that the rear wall portion of the tank reaches a generally horizontal position with tilting of the canister unit through an acute angle.
Claim 19
Dependent Claim
41 words
The wet/dry vacuum device according to claim 16 wherein the canister unit is provided with a pouring spout at an upper rear portion thereof, with the pouring spout being located on an opposite side of the axis than the base portion.
Claim 20
Dependent Claim
77 words
The wet/dry vacuum device according to claim 17 wherein the pouring spout is angled upwardly and rearwardly when the canister unit is in the lowered position and reaches a substantially horizontal position with only limited tilting of the canister unit such that the pouring spout section will become filled with a portion of the contents of the tank upon initial tilting of the canister unit which, in turn, will assist in further tilting of the canister unit.
Claim 21
Dependent Claim
199 words
A mobile wet/dry vacuum device comprising, in combination: a support carriage including a base portion and an upstanding portion; a plurality of wheels mounted to the carriage to aid in maneuvering of the carriage upon a supporting surface; and a canister unit pivotally mounted about an axis defined by the upstanding portion of the carriage for movement between a lowered position, in which the canister unit is arranged atop the base portion in a generally vertical condition for collection of both solid and liquid debris into the canister unit, and a raised position, in which the canister unit is tilted relative to the base portion for emptying the canister unit, with the canister unit including a tank positioned forward of the axis about which the canister unit pivots and a pouring spout section that is provided at an upper portion of the canister unit, internally opens into the tank and projects rearward of the axis about which the canister unit pivots, with the tank having a rear wall portion that also angles upwardly and rearwardly such that the rear wall portion of the tank reaches a generally horizontal position with tilting of the canister unit through an acute angle.
Claim 22
Dependent Claim
199 words
A mobile wet/dry vacuum device comprising, in combination: a support carriage including a base portion and an upstanding portion; a plurality of wheels mounted to the carriage to aid in maneuvering of the carriage upon a supporting surface; and a canister unit pivotally mounted about an axis defined by the upstanding portion of the carriage for movement between a lowered position, in which the canister unit is arranged atop the base portion in a generally vertical condition for collection of both solid and liquid debris into the canister unit, and a raised position, in which the canister unit is tilted relative to the base portion for emptying the canister unit, with the canister unit including a tank positioned forward of the axis about which the canister unit pivots and a pouring spout section that is provided at an upper portion of the canister unit, internally opens into the tank and projects rearward of the axis about which the canister unit pivots, with the tank having a rear wall portion that also angles upwardly and rearwardly such that the rear wall portion of the tank reaches a generally horizontal position with tilting of the canister unit through an acute angle.
Claim 23
Dependent Claim
79 words
The wet/dry vacuum device according to claim 19 wherein the pouring spout section is angled upwardly and rearwardly when the canister unit is in the lowered position and reaches a substantially horizontal position with only a limited tilting of the canister unit such that the pouring spout section will become filled with a portion of the contents of the tank upon initial tilting of the canister unit which, in turn, will assist in further tilting of the canister unit.
Claim 24
Dependent Claim
82 words
The wet/dry vacuum device according to claim 19 wherein the upstanding portion of the carriage is formed with a pair of laterally spaced ear portions provided with open ended cavities and the canister unit is formed with a pair of lugs which are received within the cavities, with the lugs aiding in defining the axis about which the canister unit pivots relative to the carriage, with the lugs being readily removable from the cavities for detaching the canister unit from the carriage.
Claim 25
Dependent Claim
67 words
The wet/dry vacuum device according to claim 19 further comprising, in combination: a lifting plate having an upper end pivotally attached to the upstanding portion of the carriage, with the canister unit abutting and being supported upon the lifting plate for concurrent movement between the raised and lowered positions, and means for assisting in manually tilting the canister unit from the lowered position to the raised position.
Claim 26
Dependent Claim
52 words
The wet/dry vacuum device according to claim 19 wherein the upstanding portion of the carriage includes a front section that extends upwardly and rearwardly at an angle to the base portion, with the rear wall portion, of the tank abutting the front section when the canister unit is in the lowered position.
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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) | 2002-11-08 | 2003-05-10 | 2003-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-08 | 2007-05-10 | 2007-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-08 | 2011-05-10 | 2011-11-09 | $7700.00 | Window Closed / Lapsed |