Electric vacuum cleaning and agitator motor control system

Electrical transmission or interconnection systems – Plural load circuit systems – Plural sources of supply

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H01H 4722

Patent

active

040705862

ABSTRACT:
Electrical energization and control circuit particularly for use in permanently installed vacuum cleaning systems having a centrally located A.C. powered vacuum turbine and a remote flexible cleaning unit equipped with low voltage A.C. or D.C. agitator motors. Energization of the A.C. turbine motor circuit is controlled by a current sensor in the one of the two wires leading to the remote low voltage agitator motor so that a selector switch in the handle of the cleaning unit may, in one position, energize the low voltage agitator motor or, in a second position, bypass the agitator motor through a resistance to initiate a current flow that is sensed by the current sensor to activate the A.C. motor circuit.

REFERENCES:
patent: 3700972 (1972-10-01), Bates

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