Patent ID: 9624988
Date: 2017-04-18
CPC Classifications: F16D,F16H

Claim:
1. A viscous clutch comprising: a housing assembly; a rotor assembly; a reservoir to hold a supply of a shear fluid, the reservoir carried by the housing assembly; a reservoir cover defining a portion of a boundary of the reservoir; a working chamber operatively positioned between the housing assembly and the rotor assembly, wherein selective introduction of the shear fluid to the working chamber facilitates selective torque transmission between the housing assembly and the rotor assembly; an outlet bore in the reservoir cover to allow the shear fluid out of the reservoir to the working chamber along a fluid delivery path; and a fluid return bore that extends radially through at least an outer diameter portion of the rotor assembly to the working chamber, the fluid return bore forming at least a portion of a fluid return path from the working chamber to the reservoir.