US PATENT SUBCLASS 236 / 79
.~.~ Relay

Current as of: June, 1999
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236 /   HD   AUTOMATIC TEMPERATURE AND HUMIDITY REGULATION

67  DF  MOTORS {7}
*  DD  .~ Fluid-operated {1}
79.~.~ Relay {6}
80 R  DF  .~.~.~> Shunt {7}
81  DF  .~.~.~> Snap-acting
82  DF  .~.~.~> Compound {1}
84  DF  .~.~.~> Electric
85  DF  .~.~.~> Pressure-operated
*  DD  .~.~.~> Thermostatic {2}

DEFINITION

Classification: 236/79

(under subclass 67) Devices operated by fluid pressure and controlled by a relay, which is in turn controlled by means responsive to the temperature to be regulated.

SEE OR SEARCH CLASS

110, Furnaces,

185, for refuse incinerators and solid fuel furnaces provided with control means responsive to a sensed condition.

137, Fluid Handling,

82+, for fluid pressure relays or followers, per se.