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. 06, 1982
Filed:
Feb. 28, 1979
Larry O Gray, Greens Fork, IN (US);
Dana Corporation, Toledo, OH (US);
Abstract
There is disclosed an apparatus for automatically maintaining the speed of a vehicle at a desired speed as selected by the vehicle operator. The apparatus includes one feedback loop for monitoring the actual vehicle speed and another feedback loop for monitoring the engine load. The engine load feedback loop enables the speed control to anticipate the effects of changes in road speed so as to minimize or eliminate undershoot or overshoot of the control system. A signal representing the actual vehicle speed is combined with a signal representing the engine load to generate a composite feedback signal to a comparator circuit. The comparator circuit compares the feedback signal with a signal representing the desired vehicle speed and generates control signals for maintaining the speed of the vehicle at the desired speed.