US PATENT SUBCLASS 470 / 85
.~.~.~ And reciprocable die

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

57  DF  APPARATUS FOR MAKING EXTERNALLY THREADED FASTENER OR ARTICLE, E.G., SCREW, BOLT, ETC. {2}
58  DF  .~ Screw fastener making {6}
84  DF  .~.~ Having thread swaging means {1}
85.~.~.~ And reciprocable die

DEFINITION

Classification: 470/85

And reciprocable die:

(under subclass 84) Subject matter wherein the component comprises an internally threaded structure adapted to move back and forth along a direction at a right angle to the axis of the fastener to thereby engage and form a thread on the fastener.