US PATENT SUBCLASS 277 / 328
.~ Longitudinally actuated packer for above ground apparatus


Current as of: June, 1999
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277 /   HD   SEAL FOR A JOINT OR JUNCTURE

322  DF  SEAL FOR WELL APPARATUS {8}
328.~ Longitudinally actuated packer for above ground apparatus {1}
329  DF  .~.~> Contained or compressed by gland member in packing box {1}


DEFINITION

Classification: 277/328

Longitudinally actuated packer for above ground apparatus:

(under subclass 322) Seal for well apparatus wherein the seal is between axially spaced members where one or more of the members axially bias the seal into sealing engagement at the

joint or juncture between the part (e.g., axial rod, pipe, drill stem, etc.) surrounded by another part (e.g., well casing) intended to function or remain at ground level.

SEE OR SEARCH THIS CLASS, SUBCLASS:

327, for a sealing ring for well apparatus having an overpressure control device that works by axially compressing the seal.