Means for emptying a filter box

Details Means for emptying a filter box Means for emptying a filter box

1992-12-28

1993-10-19

Hart, Charles

Gas separation

Plural serial basically diverse separating media

Plural stages in unitary casing

153403, 55304, 55354, 55432, B01D 5000

Patent

active

052541460

ABSTRACT:
An improved means is provided for emptying dust and debris accumulated in the air filter box of a surface maintenance machine having vacuumized dust control.

REFERENCES:
patent: 3304572 (1967-02-01), Wendel
patent: 3780502 (1973-12-01), Dupre et al.
patent: 4557739 (1985-12-01), Fortman et al.
patent: 4708723 (1987-11-01), Howeth
patent: 5013333 (1991-05-01), Beaufoy et al.

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