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:
Apr. 19, 1988
Filed:
Jul. 31, 1987
Roque D Marcade, Lincoln Township, Berrien County, MI (US);
Whirlpool Corporation, Benton Harbor, MI (US);
Abstract
A motor control for a refrigeration apparatus having a cabinet, a door to the cabinet, a source of ice pieces located in the cabinet, means located in the door for dispensing the ice pieces, a power source having a supply terminal and a ground, a motor and means responsive to operation of the motor for delivering the ice pieces from the source of the ice pieces to the dispensing means, the motor control comprising means for energizing the motor, an actuable ice command switch generating an ice command signal for requesting delivery of the ice pieces from the source to the dispensing means, a processor having an input terminal coupled to the ice command switch and an output terminal, the processor generating a transistor command signal in response to the ice command signal, and a transistor having a control electrode coupled to the output terminal and first and second main current electrodes, wherein the processor output terminal is coupled to the transistor control electrode, and the motor energizing means, the ice command switch and the transistor first and second main current electrodes are coupled in series between the supply terminal and ground such that the transistor is actuated in response to the transistor command signal and current flows through the motor energizing means to energize the motor only upon actuation of both the ice command switch and the transistor.