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. 13, 1987
Filed:
Dec. 24, 1984
John W McColl, Broadview, IL (US);
Borg-Warner Corporation, Chicago, IL (US);
Abstract
A hydraulically actuated starting clutch adapted for a continously variable transmission which is located at the output of the transmission to couple the vehicle wheels to the engine upon a signal from the throttle induced system oil pressure. The clutch includes a cover connected to the drive shaft through a hub forming a pressure chamber behind a piston, a Belleville spring acted upon by the piston and urging a pressure plate against the clutch plate and an end plate secured in the cover. Weights are mounted on the Belleville spring to compensate for the centrifugal effect of the oil in the pressure chamber, and a cooling oil impeller is positioned between the end plate and a clutch plate hub and operatively connected to the end plate. The Belleville spring bears on the hub and cover to retain them in operative driving condition, and the clutch plate is operatively connected to a sleeve shaft to drive the differential for the vehicle wheels. Also, the hydraulic pressure acting on the secondary pulley of the continuously variable transmission to change its effective diameter simulaneously acts on the piston actuating the clutch.