US PATENT SUBCLASS 175 / 230
WITH EXPANSIBLE BORE WALL ANCHOR (E.G., PACKER)


Current as of: June, 1999
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175 /   HD   BORING OR PENETRATING THE EARTH

230WITH EXPANSIBLE BORE WALL ANCHOR (E.G., PACKER)


DEFINITION

Classification: 175/230

(under the class definition) Apparatus in which the tool, tool shaft or housing is provided with a means which is adapted to expand laterally to engage the wall of the borehole or casing to resist or prevent the movement of the tool, tool shaft or housing or a portion thereof due to the action of gravity or a lifting force.

SEE OR SEARCH THIS CLASS, SUBCLASS:

81, for an anchor engaging side wall of inaccessible bore for shaft engaging guide.

98, for expansible means to anchor a below ground tool drive motor to a bore wall.

118, for feed anchor in earth wall being bored.

210, for a fluid or cuttings directing or receiving means engaging the bore entrance, said means being anchored to the bore wall. SEE OR SEARCH CLASS

166, Wells,

206+, and the search there noted for an expansible anchor or casing for wells.