US PATENT SUBCLASS 470 / 191
.~ Bolt or rivet forming die

Current as of: June, 1999
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470 /   HD   THREADED, HEADED FASTENER, OR WASHER MAKING: PROCESS AND APPARATUS

183  DF  IMPLEMENT, E.G., DIE, ETC. {10}
191.~ Bolt or rivet forming die

DEFINITION

Classification: 470/191

Bolt or rivet forming die:

(under subclass 183) Subject matter specially adapted to form an externally threaded fastener structured to cooperate with and internally threaded fastener, or a fastener provided with an end structure consisting of a polyscrystalline metallic grain structure which when subjected to an externally applied force is plastically flowable.