US PATENT SUBCLASS 285 / 291.2
.~.~ Having interrupted thread

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

285.1  DF  MOLDED JOINT {11}
291.1  DF  .~ Having screw interlock {1}
291.2.~.~ Having interrupted thread

DEFINITION

Classification: 285/291.2

Having interrupted thread:

(under subclass 291.1) Subject matter wherein the thread is broken (non-continuous) thereby being a locking thread.