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:
Oct. 24, 1989
Filed:
Oct. 09, 1987
Applicant:
Inventors:
Karl F Schneider, Ithaca, NY (US);
William J Haley, Ithaca, NY (US);
Alan L Miller, Chicago, IL (US);
Assignee:
Borg-Warner Automotive, Inc., Troy, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ; F16D / ;
U.S. Cl.
CPC ...
192-0033 ; 192-0076 ; 192 / ; 1921 / ;
Abstract
An adaptive clutch torque capacity control for an automotive vehicle clutch utilizing a dual area apply piston for engagement of the clutch plate for accurate control over a larger than normal torque range. The use of two piston areas allows one area to be controlled in a 'coarse' fashion, while the other piston area, which is generally a small area, provides a 'vernier' or fine adjustment control. The small area piston is controlled by an electronic closed loop for fine adjustment of any errors occurring in the 'coarse' control.