US PATENT SUBCLASS 236 / 59
.~.~ Expanding solid

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

*  DD  TRAPS {3}
*  DD  .~ Thermostatic {3}
59.~.~ Expanding solid {1}
60  DF  .~.~.~> Conduit

DEFINITION

Classification: 236/59

(under the class definition) Automatic steam-traps in which the drain-valve is directly operated by a thermostat of the expanding-solid type.

SEE OR SEARCH THIS CLASS, SUBCLASS:

66, for air relief valve controlled by thermostat.