US PATENT SUBCLASS 285 / FOR 129
.~.~.~.~ With slip-compressed packing (285/147)

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

FOR 100  DF  SYSTEMS (285/120) {11}
FOR 120  DF  .~ Inner to spaced outer tube coupling (285/138) {2}
FOR 122  DF  .~.~ Suspended (e.g., oil well casing type) (285/140) {3}
FOR 126  DF  .~.~.~ Slip anchored inner tube (285/144) {4}
FOR 129.~.~.~.~ With slip-compressed packing (285/147)

DEFINITION

Classification: 285/FOR.129

Foreign art collection in which a packing around the inner tube is compressed by the slips supporting the inner tube weight.