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. 09, 1978
Filed:
Aug. 30, 1976
Wolfgang Borst, Schwieberdingen, DT;
Karl Ott, Schwieberdingen, DT;
Robert Bosch GmbH, Stuttgart, DT;
Abstract
A speed related signal is counted out with respect to clock pulses having a predetermined rate in a counter; if, and when the counter reaches a certain predetermined number, the number is decoded and applied as a disconnect control signal to open a switch controlling current flow through the ignition coil. The number is selected to occur only if the engine operates at a very slow speed, or is stopped, so that no reset signal will be applied to the counter. A logic stage is provided having both the output of the count decoder stage as well as of the speed related signal applied thereto to ensure that disconnection is effected only when the counter has reached the decoding number, and then to continue reliably disconnection of the ignition current.