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:
Nov. 26, 1985
Filed:
Jul. 22, 1983
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Tokai Rika Denki Seisakusho, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
361196 ; 219203 ; 219492 ;
Abstract
A timer circuit suitable for operating, for a required period of time, the windshield defrosting heater in an automobile, comprises a switch operative only in one direction, such as a momentary unidirection switch, a timer which starts timing operation after a lapse of a predetermined time, and a flip-flop circuit or the like. The switch allows setting and cancelling for timing operation, whereby the operative characteristics are improved and the mechanical design is simplified. Moreover, the use of a flip-flop circuit reduces the occurrence of chattering.