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:
Jan. 22, 1980
Filed:
May. 12, 1978
Minoru Kato, Kariya, JP;
Masao Nagasawa, Kariya, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A contactless ignition system for an internal combustion engine in which a moderately rising timing signal and a steeply rising auxiliary signal are generated so that an auxiliary thyristor is triggered by the auxiliary signal to be conductive to render a main thyrister which is connected in series with the auxiliary thyristor to be conductive by the timing signal and in which a resistor for holding the auxiliary thyristor in the conductive state is connected in parallel with the main thyristor so that the ignition timing in the high speed range may be controlled by the auxiliary signal to prevent the excessive spark timing advance in the high speed range and also in the low speed range the auxiliary thyristor may be maintained in the conductive state until the main thyristor is made conductive to thereby prevent misfiring.