Vacuum cleaner dust container having compressing means associate

Details Vacuum cleaner dust container having compressing means associate Vacuum cleaner dust container having compressing means associate

1981-04-14

1982-12-14

Prunner, Kathleen J.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

55361, 55417, 55428, 55467, 55475, 55DIG3, A47L 912

Patent

active

043631568

ABSTRACT:
A vacuum cleaner having an air non-pervious body in the shape of a closed bellows in the suction chamber thereof with one end of the bellows bearing against the dust container, and the other end bearing against a partition separating the suction chamber from a positive pressure chamber housing the motor-fan unit. The bellows communicates with the pressure chamber through a conduit so that the bellows can be brought into communication with the positive pressure side of the fan so that the bellows expands and compresses said dust container and its contents, and thus increases the filling capacity of the dust container. The running costs of operating a vacuum cleaner is thus substantially reduced.

REFERENCES:
patent: 1991859 (1935-02-01), Lofgren
patent: 2022249 (1935-11-01), Lofgren
patent: 2174443 (1939-09-01), Lofgren
patent: 2507043 (1950-05-01), Osborn
patent: 3407572 (1968-10-01), Tolley
patent: 3466696 (1969-09-01), Grellsson
patent: 4277265 (1981-07-01), Leinfelt

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