Vacuum cleaner and suction member thereof

Details Vacuum cleaner and suction member thereof Vacuum cleaner and suction member thereof

1998-04-09

2000-02-01

Beisner, William H.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15383, 15421, 15182, A47L 500

Patent

active

060188456

ABSTRACT:
In order to adjust a degree of tight contact between a floor surface and a suction member of a vacuum cleaner, and to facilitate operation of the vacuum cleaner, an air flow adjusting valve is provided at a left end of an upper plate of the suction member. When a negative pressure in an inner chamber reaches to a certain valve, the air flow adjusting valve is opened and air is introduced through an air inlet. This facilitates movement of the suction member over the floor surface.

REFERENCES:
patent: 1106231 (1914-08-01), Marshall
patent: 1370256 (1921-03-01), Adams
patent: 2096595 (1937-10-01), Sanford
patent: 2134396 (1938-10-01), Campbell
patent: 2159164 (1939-05-01), Karlstrom
patent: 2578549 (1951-12-01), Hooban

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