US PATENT SUBCLASS 251 / 214
.~ Particularly packed or sealed


Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

213  DF  MECHANICAL MOVEMENT ACTUATOR {10}
214.~ Particularly packed or sealed


DEFINITION

Classification: 251/214

(under subclass 213) Devices wherein the valve stem and/or actuator is particularly associated with means to pack or seal it to prevent leakage of fluid between the inside and outside of the valve body (e.g., as where the actuating screw threads are enveloped by the packing).

SEE OR SEARCH CLASS

277, Seal for a Joint or Juncture, for a generic sealing means or process,

500+, for a dynamic, circumferential, contact seal for other than a piston.