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:
Mar. 29, 1977
Filed:
Oct. 16, 1974
Masao Nagasawa, Kariya, JA;
Nippondenso Co., Ltd., Kariya, JA;
Abstract
In the ignition system having a thyristor for performing a switching action, another thyristor is connected to capacitor charging coils in parallel with the thyristor, a primary winding of a transformer is connected in series with the another thyristor, a secondary winding is connected to a gate of the thyristor, and a trigger coil generating an ignition signal and a reversion protecting signal is connected to a gate of the another thyristor. By the transformer and the another thyristor, only the ignition signal is applied to the gate of the thyristor during a normal running of an engine, while only the reversion protecting signal is applied to the gate of the thyristor during a reverse rotation of the engine to prevent a capacitor from being charged thus protecting the reverse rotation.