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:
Feb. 18, 2003
Filed:
Aug. 16, 2001
Applicant:
Inventors:
Michael C. Pfeil, South Charleston, OH (US);
Gary C. Fulks, Spring Valley, OH (US);
Paul F. Flanagan, Dayton, OH (US);
Assignee:
Delphi Technologies, Inc., Troy, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 6/536 ; G06F 1/700 ;
U.S. Cl.
CPC ...
F16D 6/536 ; G06F 1/700 ;
Abstract
Apparatus, method and program product that controls the release of an electronically activated parking brake. An algorithm adjusts for cable stretch and limits the occurrence of over-release and wheel drag within the brake system. A controller monitors force incident on an actuator during a brake release operation. When a preset load is indicated, the controlling parameter of the algorithm transitions from force to position control. Once in position control, the controller uses previous position measurements and equipment specific constants to calculate a release point.