Automatic termination and alarm structure for motors used in ver

Details Automatic termination and alarm structure for motors used in ver Automatic termination and alarm structure for motors used in ver

1987-05-11

1988-10-11

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15353, A47L 700

Patent

active

047760605

ABSTRACT:
A multi-purpose vacuum cleaner for solids and liquids includes a motor mounting seat covering the vacuum cleaner tank and having a circular orifice, a filter cage mounted about the orifice on the underside of the motor mounting seat containing a spherical float, and a switch connected to the float so as to be operated when liquid in the tank reaches a predetermined level. Rising of liquid in the tank to the predetermined level lifts the float to obstruct the orifice, preventing liquid from entering the motor, and actuates the switch to disconnect power from the motor and to energize an alarm.

REFERENCES:
patent: 3034273 (1962-05-01), Wallace
patent: 3048875 (1962-08-01), Bottinelli et al.
patent: 3056994 (1962-10-01), Noble
patent: 3165774 (1965-01-01), Barba
patent: 3173164 (1965-03-01), Congdon
patent: 3774260 (1973-11-01), Emus
patent: 4080104 (1978-03-01), Brown
patent: 4616378 (1986-10-01), Berfield et al.

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