.~ Valve control means contacting well conduit wall
DEFINITION
Classification: 166/166
(under subclass 162) Devices comprising a valve or closure and control means for the valve or closure adapted to contact the wall of the well conduit within which the container is
positioned.
SEE OR SEARCH THIS CLASS, SUBCLASS:
145, for devices as defined in subclass 166 in which there is also a packer, a bypass around the packer and a passage between the receptacle and the space below the packer which is opened when the bypass is closed.
SEE OR SEARCH CLASS
294, Handling: Hand and Hoist-Line Implements,
68.22+, for hoist buckets in which a valve may be opened by contact with the bottom or an obstruction across a well.
