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:
Jan. 09, 1990
Filed:
Feb. 01, 1988
Thomas H Morell, Grand Haven, MI (US);
Frederick A Schonfeld, Albuquerque, NM (US);
Sparton Corporation, Jackson, MI (US);
Abstract
A microprocessor controlled automatic transmission range shift selector positions the range shift valve in accordance with a shift request by an electric motor. A feedback transducer provides valve position information for motor control purposes. Vehicle conditions transducers including a door switch, a seat switch, vehicle speed and RPM sensors, ignition circuit status and key presence detectors, a parking brake sensor and a foot brake switch provide inputs to the microprocessor which is programmed to determine appropriate shifts to prevent requested range shifts in some cases and automatically initiating shifts into park in other cases. An automatic parking brake actuator and door lock actuators are also controlled by the microprocessor system.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile