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. 04, 1995
Filed:
Dec. 04, 1992
Applicant:
Inventors:
Takashi Enomoto, Zama, JP;
Takashi Kunimi, Tokyo, JP;
Assignee:
Nihon Inter Electronics Corporation, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
361152 ; 361186 ;
Abstract
A counter electromotive force due to electromagnetic induction is generated on interruption of a current if an actuator 10 is in a normal state. An output signal generated by the counter electromotive force and a pulse signal which is generated from the fall of an input signal applied to the electronic switch are applied to an AND logical circuit 90 to determine whether or not the actuator is defective.