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. 14, 1992
Filed:
Aug. 23, 1990
Nissan Motor Company, Ltd., , JP;
Abstract
A structure of a system for automatically controlling a vehicle speed to a desired cruise speed is disclosed in which, when a signal generated by a cancel switch provided for halting a control operation of the system, is generated by a turning on of the cancel switch, a voltage applying portion, intervened between the cancel switch and each signal lines connected between one of set/coast switch and acceleration/resume switch and a corresponding input end of a control circuit, generates a voltage whose level is different from that generated when either set/coast or acceleration/resume switch is operated, the voltage being supplied to each of the signal lines. A signal generating portion provides a third signal in response to the applied voltage from the voltage applying portion to another input end of the control circuit. Thus, the cancel switch signal can be distinguished and identified from the other switch signals derived from the set/coast and acceleration/resume switches even if one or all of the signal lines has failed.