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:
Oct. 28, 1986
Filed:
Dec. 19, 1984
Applicant:
Inventors:
Hidekazu Oshizawa, Higashimatsuyama, JP;
Takeo Kushida, Higashimatsuyama, JP;
Assignee:
Diesel Kiki Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
361152 ; 361160 ;
Abstract
A solenoid driving circuit for supplying an exciting current whose level suddenly increases at the beginning of the flow of the current has a voltage inducing circuit for providing a pulse-like current component which suddenly increases at the beginning of the flow of the exciting current, a unidirectional element for supplying the pulse-like current component to the solenoid and a voltage limiting element for limiting the level of the pulse-like current component and applying a d.c. power to the solenoid, whereby the solenoid is effectively supplied with sufficient energy for driving it at high speed.