US PATENT SUBCLASS 166 / 86.1
.~ Inner member anchor or seal with valve

Current as of: June, 1999
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166 /   HD   WELLS

75.11  DF  ABOVE GROUND APPARATUS {25}
86.1.~ Inner member anchor or seal with valve {3}
86.2  DF  .~.~> Annular sealing type valve
86.3  DF  .~.~> Gate type (perpendicular to pipe) valve
87.1  DF  .~.~> Axially movable type valve

DEFINITION

Classification: 166/86.1

Inner member anchor or seal with valve:

(under subclass 75.11) Above ground apparatus comprising a flow regulating device in combination with a means for (a) preventing upward or downward movement of an inner pipe, rod, or cable member depending into a well casing or tubing or (b) preventing flow in the annular space between a casing supported enclosure and a pipe, rod, tubing, or wireline, said regulating device being disposed either in the well casing, tubing or pipe or in a conduit communicating with said well casing, tubing or pipe.

(1) Note. The sealing means under (b) of this definition

may be of the blow out preventer type which is considered a "valve" for classification in Class 251, subclasses 1.1+.

SEE OR SEARCH THIS CLASS, SUBCLASS:

84.1+, for a well apparatus with a seal for a reciprocating member.

SEE OR SEARCH CLASS

251, Valves and Valve Actuation,

1.1+, for blowout preventers of the valve type.