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:
Aug. 03, 1982
Filed:
Jul. 02, 1980
Hiromi Watanabe, Yokosuka, JP;
Oppama Kogyo Kabushiki Kaisha, Kanagawa, JP;
Abstract
The present invention relates to a contactless ignition circuit for internal combustion engines wherein a primary short-circuiting current flowing through the primary winding of an ignition coil is made to flow through a power transistor controlled to be conducted and interrupted by a programable unijunction transistor and a potential dividing type capacitor is connected to the anode electrode so as to operate this programable unijunction transistor when the wave height value of the primary short-circuiting current flowing through the above mentioned primary winding becomes maximum so that a spark plug connected to the secondary winding will be operated to ignite at a high sensitivity.