US PATENT SUBCLASS 285 / 279
.~.~.~ Spring-pressed flange

Current as of: June, 1999
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285 /   HD   PIPE JOINTS OR COUPLINGS

272  DF  SWIVEL {5}
275  DF  .~ Pipe in socket type {2}
278  DF  .~.~ With flange in socket {2}
279.~.~.~ Spring-pressed flange

DEFINITION

Classification: 285/279

(under subclass 278) Devices in which a spring exerts a force against the flanged pipe to hold it in seated position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

375, for a packed socket coupling having an internal reciprocating packer.