Patent ID: 9046137
Filing Date: 2015-06-02
Classification: F16D,Y02T

Abstract:
1. A fan clutch device to be mounted to a drive pulley, the fan clutch device comprising: an input member that is removably mountable with the drive pulley such that the input member rotates with the drive pulley; an output member that is adjustable in an axial direction between first and second positions relative to the input member; a clutch ring arranged between the input member and the output member, the clutch ring including a first friction surface that engages an opposing friction surface when the output member is in the first position such that the output member rotates at a first speed with the input member; a piston which is adjustable in an axial direction relative to the input member; a central shaft passing through first and second bearings, the output member being mounted on the first bearing and the input member being mounted on the second bearing; first and second spring-engaging members which are disposed between the first and second bearings; a spring arranged between the first and second spring-engaging members which biases the piston, the first bearing, and the first spring-engaging member toward a nose cap at a front of the fan clutch device; and an eddy current drive system that urges the output member to rotate at a second speed different from the first speed when the output member is in the second position, the eddy current drive system including: wherein a fluid-receiving fluid chamber is defined in part by the piston and the nose cap such that when pressurized air enters the fluid-receiving chamber, the piston, the first bearing, and the first spring-engaging member are adjusted in an axially rearward direction against a bias force of the spring thereby urging the output member into the second position.