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:
Dec. 09, 1997
Filed:
Jun. 09, 1995
Charles Edward Marshall, Novi, MI (US);
Eldon LaMar Goates, Livonia, MI (US);
Ford Global Technologies, Inc., Dearborn, MI (US);
Abstract
An electronically actuated park control system for an automatic transmission for a wheeled vehicle including a transmission range selection control assembly that sends to a powertrain control module a park signal, the module being adapted to deliver an output signal to a park controller circuit for actuating electric actuator motors which activate a mechanical transmission park mechanism, the motors having position feedback monitoring features as the transmission park mechanism is engaged or disengaged, the controller and the park controller circuit having inherent design redundancies as well as independent watchdog circuitry that ensure that transmission park release or park application responds precisely to transmission range selector requests by the driver.