US PATENT SUBCLASS 285 / 123.14
.~.~.~.~ Compressed by tightening a bolt coaxial to tubing

Current as of: June, 1999
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285 /   HD   PIPE JOINTS OR COUPLINGS

120.1  DF  HAVING PLURAL INDEPENDENT PATHS {4}
123.1  DF  .~ For concentric tubes or pipes (e.g., well casing or wellhead type) {4}
123.3  DF  .~.~ Having single suspended inner tube {3}
123.12  DF  .~.~.~ Including a seal {2}
123.14.~.~.~.~ Compressed by tightening a bolt coaxial to tubing

DEFINITION

Classification: 285/123.14

Compressed by tightening a bolt coaxial to tubing:

(under subclass 123.12) Subject matter in which the packer or pack-off device is squeezed by an assembly including a headed, threaded fastener.