US PATENT SUBCLASS 72 / 273.5
.~ Indirect extrusion


Current as of: June, 1999
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72 /   HD   METAL DEFORMING

253.1  DF  BY EXTRUDING THROUGH ORIFICE {15}
273.5.~ Indirect extrusion


DEFINITION

Classification: 72/273.5

Indirect extrusions:

(under subclass 253.1) Subject matter in which the orifice or constricted passageway is formed through a member which, during and for the squeezing operation, extends within the container and is telescopically movable relative thereto.

SEE OR SEARCH THIS CLASS, SUBCLASS:

264+, for a member provided with an extrusion orifice or restricted passageway and another member, generally a mandrel (or a core tube in indented subclasses 268) spaced from the wall of the first member to cooperate therewith to define an annular space through which tubular (generally) product may be extruded; and in which member may be telescopically movable within the container.