US PATENT SUBCLASS 166 / 122
.~.~.~ Pressure transmitted by packer or plug expanded by confined fluid from central chamber, pump, or plunger

Current as of: June, 1999
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166 /   HD   WELLS

179  DF  PACKERS OR PLUGS {17}
118  DF  .~ With expanding anchor {12}
120  DF  .~.~ Anchor actuated by fluid pressure {2}
122.~.~.~ Pressure transmitted by packer or plug expanded by confined fluid from central chamber, pump, or plunger

DEFINITION

Classification: 166/122

(under subclass 120) Devices wherein the fluid pressure for moving the anchor is applied to the sealing portion of a packer or plug in the manner defined in subclass 187.