US PATENT SUBCLASS 166 / 72
.~ Above ground actuating means for below ground device


Current as of: June, 1999
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166 /   HD   WELLS

67  DF  WITH BELOW AND ABOVE GROUND MODIFICATION {6}
72.~ Above ground actuating means for below ground device {1}
73  DF  .~.~> Tubing or casing actuated


DEFINITION

Classification: 166/72

(under subclass 67) Devices comprising a means situated above ground for causing movement of means situated below ground in the well.

(1) Note. A valve above ground which causes actuation of a device in the well by changing pressure conditions is not considered an actuating means for this subclass.

(2) Note. A mere elongated member such as a wire, rod or pipe extending from inside the well to the surface is not considered an actuating means.

SEE OR SEARCH CLASS

137, Fluid Handling,

272.1+, for hydrants.