US PATENT SUBCLASS 470 / 78
.~.~.~.~.~ Cone type

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}
66  DF  .~.~ Having thread cutting means {8}
73  DF  .~.~.~ Having collapsible die {4}
77  DF  .~.~.~.~ And lever closer {1}
78.~.~.~.~.~ Cone type

DEFINITION

Classification: 470/78

Cone type:

(under subclass 77) Subject matter further wherein the device is provided with a structure having a surface generated by a line fixed at a point moving along the intersection with a fixed curve or plane, i.e., a cone, such that movement of the cone causes movement of the lever.