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. 23, 2007
Filed:
Jun. 17, 2004
Raymond J. Haka, Brighton, MI (US);
Paul D. Stevenson, Ann Arbor, MI (US);
Raymond J. Haka, Brighton, MI (US);
Paul D. Stevenson, Ann Arbor, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A control valve apparatus for a rotating clutch includes a valve having a spool portion and a mass portion. The spool portion provides a control function to distribute pressure from a static source to a chamber of the clutch. The valve also has a mass associated therewith which is responsive to rotation of the clutch and valve apparatus such that the apply pressure and the centrifugal effective pressure operating on the valve and the mass centrifugal force is compensated for to maintain the pressure at a specific radius of the clutch equal to the static apply pressure of the pressure source independent of rotation speed.