US PATENT SUBCLASS 285 / 123.6
.~.~.~.~ Including packing means


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}
123.5  DF  .~.~.~ Having inner tube anchored by slip means {2}
123.6.~.~.~.~ Including packing means {2}
123.7  DF  .~.~.~.~.~> Having means engaging slip means and compressing packing means {1}
123.9  DF  .~.~.~.~.~> Having radially applied orienting means


DEFINITION

Classification: 285/123.6

Including packing means:

(under subclass 123.5) Subject matter incorporating a sealing device (e.g., packer, pack-off, gasket).