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, 2001
Filed:
Feb. 08, 1999
Applicant:
Inventors:
John Butwin, Ann Arbor, MI (US);
Michael J. Monaghan, Royal Oak, MI (US);
Maria Eugenia Protopapas, Canton, MI (US);
Robert Cary Haase, Southfield, MI (US);
Stephen Michael Cicala, Dearborn Heights, MI (US);
Wolfgang Wickler, Farmington Hills, MI (US);
Assignee:
Ford Global Technologies, Inc., Dearborn, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 3/102 ; H01F 7/18 ;
U.S. Cl.
CPC ...
F16K 3/102 ; H01F 7/18 ;
Abstract
A method for cleaning a solenoid-operated regulator valve wherein command current applied to a solenoid actuator establishes a defined response of a valve. Cleaning current pulses applied to the solenoid establish a response that does not interfere with the effectiveness of the valve function. The pulse width, pulse amplitude, pulse direction and pulse period are determined by the degree of contamination of the valve environment.