Method and apparatus for increasing the air flow into a vacuum c

Details Method and apparatus for increasing the air flow into a vacuum c Method and apparatus for increasing the air flow into a vacuum c

1999-06-01

2000-08-08

Snider, Theresa T.

Cleaning and liquid contact with solids

Processes

Including use of vacuum, suction, or inert atmosphere

15319, 15355, 15359, 15372, 15418, B08B 504, A47L 904, A47L 534

Patent

active

060996617

ABSTRACT:
A vacuum cleaner head having a dirty air inlet has an associated restricting member which is operable to reduce the size of the dirty air inlet thereby increasing the velocity of the air entering the air flow path.

REFERENCES:
patent: 2219802 (1940-10-01), Bjorkman
patent: 2585186 (1952-02-01), Taylor
patent: 2619669 (1952-12-01), Cuddeback
patent: 2629126 (1953-02-01), Brown, Jr.
patent: 2658229 (1953-11-01), Smellie
patent: 2822565 (1958-02-01), Dow
patent: 2930069 (1960-03-01), Kowalewski
patent: 3862469 (1975-01-01), Burgoon
patent: 3936905 (1976-02-01), Stewart et al.

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