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:
Jun. 06, 1978
Filed:
Aug. 18, 1976
Dann W Denny, Morrison, IL (US);
General Electric Company, Fort Wayne, IN (US);
Abstract
A circuit for controlling the speed of an alternating current motor. The circuit has a gate controlled full wave alternating current switch coupled in series relation with the motor, and a phase control circuit coupled in parallel relation with the switch is operable generally for providing signals indicative of the occurrence of a preselected condition. Means is provided for transmitting the indicative signals to the gate of the switch to control the duration of the conduction thereof in either direction and thereby vary the energy delivered to the motor so as to control its speed in accordance with the occurrence of the preselected condition. A method of controlling the speed of an alternating current motor is also disclosed.