Vacuum cleaner dust container filling indicator device

Details Vacuum cleaner dust container filling indicator device Vacuum cleaner dust container filling indicator device

1976-12-02

1978-07-18

Yasich, Daniel M.

Signals and indicators

Alarms

Fluid flow

15339, 116114PV, A47L 900, G01D 2100

Patent

active

041008782

ABSTRACT:
An indicator mounted on a vacuum cleaner housing for showing at any given time the degree of filling of the dust container. The indicator includes bellows which are connected to both the outside of the dust container and the interior of the vacuum cleaner housing whereby the bellows are acted upon under the influence of the changing pressure differential to respectively expand or contract the bellows thereby indicating the degree of clogging of the dust container.

REFERENCES:
patent: 2325188 (1943-07-01), Lofgren
patent: 2600271 (1952-06-01), Schaevitz
patent: 3119369 (1964-01-01), Harland
patent: 3472077 (1969-10-01), Bucalo
patent: 3853086 (1974-12-01), Asplund

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