Patent ID: 11873868
Assignee: HORTON, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A viscous friction clutch comprising:
a rotor;
a housing, wherein the housing is rotatable relative to the rotor;
a working chamber located between the rotor and the housing such that a volume of shear fluid can be selectively introduced to the working chamber to contact both the rotor and the housing;
an electromagnetic coil;
a valve assembly that controls the volume of the shear fluid present in the working chamber; and
a flux path that magnetically links the electromagnetic coil and the valve assembly, the flux path passing through a flux guide part made of a ferromagnetic material that extends through the rotor in an interior of the viscous friction clutch and across a flux gap that traverses both an air gap and a non-ferromagnetic portion of the housing.