Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1992-02-26
1993-10-26
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15366, 15383, 152310, A47L 530
Patent
active
052554104
ABSTRACT:
A vacuum cleaner generally has a working head which is positioned on the floor surface when the machine is in use. The working head of a vacuum cleaner essentially includes a rotating brush, a suction blower and a motor for operating both the brush and the blower. In addition, this working head also generally requires a spacing device, such as a wheel for guiding the brush head or suction brush head and controlling its proper spacing in relation to the floor.
REFERENCES:
patent: 837936 (1906-12-01), King
patent: 1140752 (1915-05-01), Leonard
patent: 2166777 (1939-07-01), Smith
patent: 2898622 (1959-08-01), Hurd
patent: 2975461 (1961-03-01), Hansen
patent: 3031710 (1962-05-01), Huening
patent: 5090464 (1992-02-01), Kauzlarich et al.
Kaulig Heinz
Stein Klaus
Ljungman Nils H.
Moore Chris K.
Stein & Co. GmbH
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