VISCOUS CLUTCH WITH HIGH-SPEED RESERVOIR AND BIMETAL COIL MEMBER

摘要

A viscous fan drive including a fluid valve activated by a bimetal member, and including a clutch disk member and fluid reservoir rotatable at input speed. The fluid reservoir is contained in a reservoir chamber member positioned on the clutch disk member. The bimetal coil member controls the operation of a valve member which in turn controls the passage of fluid into the working chamber for operation of a cooling fan.

主权项

1. A viscous clutch drive comprising:
a housing; a rotatable clutch disk member positioned in said housing, said clutch disk member rotatable at input speed; a working chamber comprising said housing and said clutch disk member; a fluid reservoir positioned on said clutch disk member and rotatable therewith; a valve member position in said fluid reservoir for selectively allowing viscous fluid to pass from said fluid reservoir to said working chamber; and a bimetal coil member connected to said valve member; wherein when said bimetal coil member is heated, it causes said valve member to allow passage of viscous fluid to said working chamber.