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:
Apr. 01, 1980
Filed:
Mar. 11, 1977
Heinz Decker, Vaihingen, DE;
Gerhard Sohner, Remshalden, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
An inductive transducer having an electromagnetic inductive pickup coil in flux linking relationship to a rotary electromagnetic armature provides spaced output pulses to control current flow, and subsequent interruption of current through an ignition coil; to automatically increase the time during which current can flow through the coil, and change ignition timing, an impedance load circuit is connected to the inductive transducer through a control switch, so that the output characteristic of the inductive transducer is changed when the control switch is operated; the control switch may be speed dependent, or automatically speed dependent by the inclusion of a Zener diode which becomes conductive when the output voltage from the transducer rises, for example as speed of the engine, and hence of the transducer increases.