US PATENT SUBCLASS 166 / 77.3
.~.~.~ Chain injector

Current as of: June, 1999
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166 /   HD   WELLS

75.11  DF  ABOVE GROUND APPARATUS {25}
77.1  DF  .~ Moving tubing or cable into an existing well {2}
77.2  DF  .~.~ Coiled tubing {1}
77.3.~.~.~ Chain injector

DEFINITION

Classification: 166/77.3

Chain injector:

(under subclass 77.2) Moved coiled tubing wherein the tubing is pushed by a series of links or rings.

SEE OR SEARCH CLASS

226, Advancing Material of Indeterminate Length,

170+, for orbitally traveling material engaging surface on endless belt or chain.