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:
Feb. 20, 1990
Filed:
Dec. 12, 1988
Donald L Cummins, Anderson, IN (US);
Gregory A Stephenson, Anderson, IN (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An electric starting system for controlling the energization of an electric starting motor that is operative to crank an engine. An engine speed sensor is coupled to the engine and develops engine speed pulses, the frequency of which is a function of engine speed. The engine speed pulses are counted by a counter for constant durations of time. If the number of speed pulses counted for a constant duration of time exceeds a predetermined number of pulses the starting motor is deenergized. The system has a start switch and a time delay circuit for causing the cranking motor to be energized at a predetermined time delay period following closure of the start switch.