US PATENT SUBCLASS 184 / 52
.~.~.~.~ Choke plugs

Current as of: June, 1999
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184 /   HD   LUBRICATION

14  DF  LUBRICATORS {18}
*  DD  .~ Force feed {5}
*  DD  .~.~ Fluid-operated {4}
49  DF  .~.~.~ Condensation displacement {4}
52.~.~.~.~ Choke plugs

DEFINITION

Classification: 184/52

Devices used in connection with condensation-displacement lubricators and placed on a steam-chest or analogous device

to prevent back pressure in the lubricator.

(1) Note. For restrictors not limited by structure to use with a lubricating system, see Class 138, Pipes and Tubular Conduits, subclass 40, and indented subclasses.