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:
Dec. 27, 1977
Filed:
Jan. 20, 1976
Applicant:
Inventor:
Seiichi Kashiwazaki, Naka, JA;
Assignee:
Hitachi, Ltd., , JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02P / ; F02P / ; F02P / ;
U.S. Cl.
CPC ...
1231 / ; 1231 / ;
Abstract
A semiconductor ignition system having a pick-up device for producing a.c. signals according to the speed of an engine, an ignition coil with a primary and secondary winding, a detecting device for detecting the output of the pick-up device, a switching device for controlling current flow to the primary winding in accordance with the output of the detecting device, and a control arrangement responsive to the ouput of the pick-up device for controlling the detecting device so that sufficient current flows to the ignition coil during high speed operation of the engine.