US PATENT SUBCLASS 251 / 360
.~.~ Removable

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

356  DF  VALVE {5}
359  DF  .~ Seats {3}
360.~.~ Removable {3}
361  DF  .~.~.~> Mounted between casing sections
362  DF  .~.~.~> Compression or tension retained
363  DF  .~.~.~> With seal

DEFINITION

Classification: 251/360

(under subclass 359) Subject matter which are structurally modified to provide for ready removal from the valve body or the partition therein.

SEE OR SEARCH CLASS

137, Fluid Handling,

234.5, and 454.2+ for removable valve head and seats units, subclasses 329.51+ for removable seats duplicated and reversible and subclass 533.15 for a removable seat associated with direct response reciprocating ball valve.