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:
Mar. 05, 1991
Filed:
Oct. 11, 1989
Craig S Larson, Schaumburg, IL (US);
Maria S Vlamakis, Justice, IL (US);
Borg-Warner Automotive Transmission & Engine Components Corporation, Sterling Heights, MI (US);
Abstract
A hydraulically-actuated starting clutch for a continuously variable transsion which is designed to reduce the centrifugal torque of the clutch with respect to the chain belt/sheave torque. This is accomplished by adjusting the diameters of the clutch piston to reduce the resultant clutch torque to a value lower than the chain belt/sheave torque. A pair of oil feed passages are positioned in the clutch assembly to feed oil through openings in the friction plate at all times during operation, even when rotation of the friction plate ceases. Further, an improved retractor spring is utilized in the clutch assembly with circumferentially extending tabs on its inner periphery which extend over the snap ring holding the spring onto the actuating piston to prevent release of the snap ring due to centrifugal force during operation of the clutch.