Patent ID: 7438169
Filing Date: 2008-10-21
Classification: F16D

Abstract:
1. A fan clutch device for removably mounting to a drive member, the fan clutch device comprising: an output member to selectively rotate with a drive member when the fan clutch device is mounted to the drive member, the output member having one or more mounting members to receive one or more fan blades, wherein the output member comprises: a hub portion being selectively movable in a rotational direction relative to a drive member and substantially stationary in an axial direction relative to the drive member, and a piston portion being selectively movable in the axial direction relative to the drive member, the piston portion being adjustable between a first operative position and a second operative position; and a clutch ring arranged radially outward of the output member having the one or more mounting members to receive the one or more fan blades, the clutch ring including an engagement surface to selectively engage an opposing surface so that, when the clutch ring engages the opposing surface and the fan clutch device is mounted to the drive member, the output member rotates with the drive member, wherein, when the clutch ring engages the opposing surface and the fan clutch device is mounted to the drive member, the torque required to cause slippage between the output member and the drive member is about 3000 in-lbs or greater.