US PATENT SUBCLASS 279 / 99
.~ Screw threaded

Current as of: June, 1999
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279 /   HD   CHUCKS OR SOCKETS

9.1  DF  SOCKET TYPE {27}
99.~ Screw threaded {1}
100  DF  .~.~> Nut lock {1}

DEFINITION

Classification: 279/99

(under subclass 9) Devices wherein the shank is threaded and screwed into a socket in holder.

SEE OR SEARCH CLASS

285, Pipe Joints or Couplings,

333+, for a coupling with a particular interface comprising a threaded conically tapered surface, and subclasses 390+ for a screw coupling of general utility. See the search notes thereunder.

403, Joints and Connections,

343+, for screw-connected members.