Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1998-06-04
2000-08-15
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
153276, 15353, A47L 536
Patent
active
061016691
ABSTRACT:
A vacuum appliance is disclosed, comprising a collection canister and a powerhead housing a motor and impeller assembly for establishing vacuum pressure within said canister. In one embodiment, the appliance is of the wet/dry variety. A filter assembly comprising a rigid filter cage around which a filter is disposed. The filter cage is supported on an underside of the powerhead and extends into the collection canister such that the bottom of the filter assembly is at or substantially near the bottom of the collection canister. As a result, deflection of the collection canister as a result of vacuum pressure built up in the canister is resisted by the rigidity of the filter cage. In one embodiment, a frame within the powerhead serves the dual functions of supporting the motor and defining one wall or surface of an impeller chamber in which an impeller rotates to create the vacuum pressure. Barbed latches projecting from the powerhead function to removably secure the powerhead over the open top of the collection canister by engaging notches formed in the side of the canister. Substantially flat surfaces are formed in the vacuum's powerhead to facilitate the actuation of the latches, which is intuitively and ergonomically accomplished by a user resting his or her palm, thumb, or fingers on the substantially flat surfaces and grasping the latches with his or her free fingers.
REFERENCES:
patent: 1316442 (1919-09-01), Goughnour
patent: 3568413 (1971-03-01), Jerabek
patent: 3981140 (1976-09-01), Lunsford et al.
patent: 4080104 (1978-03-01), Brown
patent: 4321006 (1982-03-01), von Ohain et al.
patent: 4656975 (1987-04-01), Johnson
patent: 4797072 (1989-01-01), Berfield et al.
patent: 4864680 (1989-09-01), Blase et al.
patent: 4896499 (1990-01-01), Rice
patent: 5076758 (1991-12-01), Palgrave
patent: 5205014 (1993-04-01), Yoo
patent: 5408722 (1995-04-01), Berfield
patent: 5535500 (1996-07-01), Stephens et al.
patent: 5560075 (1996-10-01), Jankowski
patent: 5850668 (1998-12-01), Berfield et al.
Encyclopeadia Britannica, Inc.; The New Encyclopeadia Britannica; 1768, 15.sup.th Edition; 4 pages.
McGraw-Hill, Inc.; McGraw-Hill Encyclopedia of Science & Technology; 7.sup.th Edition; 5 pages.
Gierer Joseph T.
Hoshino Kiyoshi
Martin Michael F.
Moody John
Young Jeffrey L.
Emerson Electric Co.
Moore Chris K.
LandOfFree
Wet/dry vacuum does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wet/dry vacuum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wet/dry vacuum will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1994680