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. 18, 1992
Filed:
May. 29, 1990
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A vehicle speed control system comprising an automatic speed control system for controlling the vehicle velocity to a set velocity selected by an operator, and automatic transmission control system for controlling the speed stage of the automatic transmission of the vehicle in response to the deviation between the actual vehicle velocity and the set vehicle velocity of the automatic speed control means. The automatic transmission control system comprises two operating modes including a first mode when the automatic speed control system is controlling the vehicle velocity, and a second mode when the automatic speed control system is not controlling the vehicle velocity, and the automatic transmission control system prohibits the shift of the speed stage to a fixed speed stage when the automatic speed control system is controlling the vehicle velocity. The automatic speed control system does not detect a shift of the speed stage when the automatic speed control system is controlling the throttle valve during shifting of the speed stage. The automatic speed control system controls a throttle valve in response to an abnormal state of the transmission.