Vacuum cleaner dust bag and motor disconnect device

Details Vacuum cleaner dust bag and motor disconnect device Vacuum cleaner dust bag and motor disconnect device

1978-07-14

1980-01-22

Moore, Christopher K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

A47L 928

Patent

active

041842251

ABSTRACT:
A vacuum cleaner in which the fan motor is rendered inoperative when there is no dust bag in the apparatus. The arrangement includes a servomotor having a pressure-responsive member, such as a diaphragm that operates a switch which, when closed upon the presence of a dust bag in the vacuum cleaner, permits electric current to be supplied to the fan motor. When no dust bag is present in the vacuum cleaner, the switch, which is responsive to the position of a diaphragm, will return to its original position whereby the electric current to the fan motor is disconnected.

REFERENCES:
patent: 2911062 (1959-11-01), Ferraris
patent: 4001912 (1977-01-01), Eriksson

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