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:
Aug. 09, 1977
Filed:
Oct. 15, 1975
George E Morris, Sterling, IL (US);
General Electric Company, Fort Wayne, IN (US);
Abstract
A control circuit for an electric motor adapted for operation in three speed modes and having a winding circuit with three main windings serially connected together in circuit relation therein adapted for connection in three different speed mode effecting combinations across a power source. The control circuit has means for rendering two of the windings effective in the winding circuit and alternatively rendering all three of the windings effective in the winding circuit. A device is operable generally in response to different preselected temperature conditions for respectively coupling one of the two windings and both of the two windings across the power source when the two windings are rendered effective in the winding circuit thereby to effect the operation of the motor in two different ones of the speed modes thereof and for also coupling the three windings across the power source when the three windings are rendered effective in the winding circuit thereby to effect the operation of the motor in the third different speed mode thereof.