Operating-condition indicator for vacuum cleaners

Details Operating-condition indicator for vacuum cleaners Operating-condition indicator for vacuum cleaners

1983-04-15

1984-11-13

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

55274, 116268, A47L 919

Patent

active

044816928

ABSTRACT:
An operating condition indicator for vacuum cleaners which has a diaphragm switch which responds to vacuum and a luminous indicating device. The operating-condition indicator is intended for vacuum cleaners which have a turboblower which acts directly on the suction connection and is arranged in front of the dust bag, the pressure detected in the region of the suction opening becoming less as the dust bag becomes increasingly full. The vacuum is detected at the suction opening and fed to a diaphragm switch having additional spring biasing, as a result of which an indication of readiness for operation is obtained when the motor is off and, in addition, a warning indication is given when the dust bag is excessively full, without the necessity of actuating a switch.

REFERENCES:
patent: 3172743 (1965-03-01), Kowalewski
patent: 3177635 (1965-04-01), Cawl et al.
patent: 4199838 (1980-04-01), Simonsson

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