US PATENT SUBCLASS 236 / 85
.~.~.~ Pressure-operated

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  DF  .~.~ Relay {6}
85.~.~.~ Pressure-operated

DEFINITION

Classification: 236/85

(under subclass 79) Devices wherein the relay is operated by a device responsive to changes in pressure in the fluid to be regulated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

29, for devices where the pressure controlled operates directly on the valve which controls its flow to the motor.

82+, for similar devices including compound controls.