US PATENT SUBCLASS 192 / 58.681
.~.~.~.~.~.~.~.~ Bi-metallic

Current as of: June, 1999
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192 /   HD   CLUTCHES AND POWER-STOP CONTROL

30 R  DF  CLUTCHES {15}
58.1  DF  .~ Fluent material {4}
58.2  DF  .~.~ Fluid {3}
58.4  DF  .~.~.~ Viscous shear {3}
58.5  DF  .~.~.~.~ Separate reservoir {3}
58.6  DF  .~.~.~.~.~ Automatic regulation {3}
58.63  DF  .~.~.~.~.~.~ Temperature {5}
58.68  DF  .~.~.~.~.~.~.~ Ambient {1}
58.681.~.~.~.~.~.~.~.~ Bi-metallic {2}
58.682  DF  .~.~.~.~.~.~.~>.~.~ Spiral {1}
58.684  DF  .~.~.~.~.~.~.~>.~.~ Mounting feature

DEFINITION

Classification: 192/58.681

Bimetallic:

(under subclass 58.68) Subject matter wherein the level of heat of the surrounding air is sensed by an element comprised of at least two metals having dissimilar coefficients of thermal expansion, the element moving in response to a change in the level of heat to effect control of the level of clutching medium in the working chamber (e.g., by operating a valve).