The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 24, 1978
Filed:
Aug. 23, 1976
John J Breslin, Los Altos, CA (US);
Beamco, Inc., Mountain View, CA (US);
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.