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:
Jul. 19, 1977
Filed:
Mar. 16, 1976
Applicant:
Inventor:
Louis Jean Chateau, Rosny-sur-Bois, FR;
Assignee:
Ducellier & Cie, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
1231 / ; 1231 / ; 315224 ; 361-4 ; 361 91 ;
Abstract
A device for protecting an ignition device, particularly for motor vehicles, equipped with an internal combustion engine, in which a zener diode controls, by means of at least two transistors the placing in short-circuit of a resistor connected in series with the primary winding of an ignition coil and a control device in such a manner that when the supply voltage of the device exceeds a determined value, the resistor acts in series with the coil, which avoids damage to the ignition device.