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:
Mar. 25, 1980
Filed:
Jan. 26, 1978
Roque D Marcade, Stevensville, MI (US);
Whirlpool Corporation, Benton Harbor, MI (US);
Abstract
A selection acknowledgment system is disclosed for a laundry appliance having a plurality of function selection switches, a plurality of function indicator lights, and an integrated program chip which controls functions during operation of the laundry appliance. The program chip has a plurality of control lines each of which function as both an input and an output. During an input mode, signals generated by the function selection switches are input via the control lines. In an output mode, the same control lines convey output signals to trigger appropriate function indicator lights. In order to acknowledge operator actuation of one or more of the function selection switches during an input mode, an acknowledgment switching circuit is provided which momentarily turns off all of the function indicator lights as long as one of the function selection switches is depressed, thus indicating to the operator that the function he has selected has been entered into the program portion of the system.