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:
Sep. 15, 1998
Filed:
Aug. 02, 1996
Alan Michael Rooke, Novi, MI (US);
David Andrew Franchock, Livonia, MI (US);
Stephen Michael Cicala, Dearborn Heights, MI (US);
Myron Ihor Senyk, Sterling Heights, MI (US);
Kyle Shawn Williams, Redford, MI (US);
Roberto Anthony Rossi, Warren, MI (US);
Christopher David Tebbe, Canton, MI (US);
Ford Global Technologies, Inc., Dearborn, MI (US);
Abstract
A method and system for detecting degraded operation of a solenoid. A current through the solenoid is sampled at predetermined time intervals within a predetermined time period. A maximum value of the sampled current is first detected. Next, a minimum value of the sampled current subsequent to the maximum value is detected. Finally, a predetermined increase in the sampled current from the minimum value is detected to verify operation of the solenoid.