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. 13, 1997
Filed:
Mar. 26, 1996
Parmjit S Pabla, Fort Wayne, IN (US);
Merrill D Miller, Huntington, IN (US);
Navistar International Transportation Corp., Chicago, IL (US);
Abstract
A circuit interfaces a brake switch and a combination turn signal/hazard warning signal switch with a system electronic control module (ECM). The circuit is especially useful when the vehicle has an engine idle shut-down system that requires an input for distinguishing brake application from brake non-application, wherein such an input is derived from operation of the interface circuit. The circuit also employs a relay, which, along with the brake switch, the system ECM, and the combination turn signal/hazard warning signal switch, are connected such that the brake switch carries only the relay coil load, live D.C. voltage, which is independent of the position of the vehicle's ignition switch, is fed through the relay, and a hazard warning signal is prevented from having any effect on the ECM via the relay.