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:
May. 07, 1985
Filed:
Apr. 26, 1983
Kiyoshige Enomoto, Kanagawa, JP;
Masao Iwata, Kanagawa, JP;
Oppama Kogyo Kabushiki Kaisha, Yokosuka, JP;
Abstract
A contactless ignition device for internal combustion engines comprising an exciter coil and pulser coil inducing voltages of phases reverse to each other with the rotation of the internal combustion engine, a first capacitor and second capacitor charged with voltages induced by the respective coils and switching elements connected in series in a circuit connecting the first capacitor with an ignition coil so as to conduct the voltage discharged by the second capacitor when either of both induced voltages reaches a set level. A control circuit controlling the switching time of the switching elements is connected to the switching elements so as to delay the operation of the second switching element with the control circuit in the low speed operation range of the engine and to advance the operation in the high speed operation range. This control circuit includes a switching element operating in response to the voltage inducing state of the exciter coil or pulser coil.