US PATENT SUBCLASS 285 / 123.13
.~.~.~.~ Held by a means applied radially (e.g., set crew)

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}
123.13.~.~.~.~ Held by a means applied radially (e.g., set crew)

DEFINITION

Classification: 285/123.13

Held by a means applied radially (e.g., set screw):

(under subclass 123.12) Subject matter including a packing about the inner tube which is fixed by a mechanical fastener along a line defined by the radius of the inner pipe.