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. 08, 1990
Filed:
Feb. 16, 1989
Edward L Tury, Brighton, MI (US);
Automotive Products (U.S.A.) Inc., Sterling Heights, MI (US);
Abstract
This invention is an electrical control apparatus for control of a transmission apparatus in a motor vehicle which provides safety features and improper operation indications. The transmission apparatus has a plurality of transmission states and at least one motor adapted for shifting between transmission states. According to a first aspect of the invention the input device is a plurality of momentary contact push buttons, and the logic control unit provides a priority of transmission state selection in accordance to a predetermined hierarchy of priority if more than one push button is depressed. In accordance with a second aspect of the invention, the electrical control apparatus provides a fault indication, such as via a lamp, if said desired transmission state differs from said present transmission state for longer than a predetermined period of time. In accordance with a third aspect of the present invention, the electronic control apparatus includes a vehicle speed sensor, and the logic control unit inhibits shifting the transmission and provides an error indication, such as by a lamp, if the speed of the vehicle is too fast for the desired gear.