Vacuum cleaner

Details Vacuum cleaner Vacuum cleaner

1996-04-30

1998-02-24

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

153272, 153277, A47L 900

Patent

active

057200769

ABSTRACT:
A vacuum cleaner has wheels which can rotate in one direction only, when the body of the cleaner is inclined to the horizontal, such as when the cleaner is disposed on a flight of stairs. A prop provides alternative or additional support by engaging the stair surface. The invention reduces the possibility of the cleaner rolling off the stair tread and falling down the stairs.

REFERENCES:
patent: 3015123 (1962-01-01), Descarries
patent: 3104112 (1963-09-01), Crail
patent: 3820808 (1974-06-01), Brunning et al.
patent: 3881535 (1975-05-01), Du Bois et al.
patent: 4357177 (1982-11-01), Knox

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