BIMETAL ACTIVATED VISCOUS CLUTCH WITH WIPER ON CLUTCH DISK

摘要

Viscous fan drive systems with wiper members positioned on the OD of the clutch disks, and which rotate at high speed. The fluid reservoir also rotates at input speed. The wiper member directs viscous fluid radially back to the fluid reservoir. The valves in the viscous fan drive systems can be activated by a bimetal mechanism.

主权项

1. A viscous clutch drive comprising:
a housing; a rotatable clutch disk member positioned in said housing; a working chamber comprising said housing and said clutch disk member; a fluid reservoir positioned on said clutch disk member and rotatable therewith; a wiper member located on the outer diameter surface of said clutch disk member; a valve member positioned in said fluid reservoir for selectively allowing viscous fluid to pass from said fluid reservoir to said working chamber; and a bimetal member connected to said valve member; wherein when said bimetal member is heated, it causes said valve member to allow passage of viscous fluid to said working chamber.