Patent ID: 7533764
Filing Date: 2009-05-19
Classification: F16D,Y10S,Y10T

Abstract:
1. A fan clutch device to be removably mounted to a drive member, the fan clutch device comprising: a hub portion that, when the fan clutch device is mounted to a drive member, is selectively movable relative to the drive member, the hub portion having a first spring-engaging surface; and a piston portion adjustable in an axial direction relative to the drive member when the fan clutch device is mounted to a drive member, the piston portion being adjustable between first and second positions, the piston portion having a second spring-engaging surface that opposes the first spring-engaging surface; a fluid-receiving space located within the clutch device, the space being defined at least partially by surfaces of the hub portion and the piston portion; and a single spring device abutting against the first spring-engaging surface of the hub portion and the second spring-engaging surface of the piston portion to urge the piston portion toward one of the first position and the second position, wherein the single spring device is coaxially arranged with at least one of the hub portion and the piston portion.