US PATENT SUBCLASS 72 / 260
.~ Expressing non-uniform cross-section or non-linear product


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



72 /   HD   METAL DEFORMING

253.1  DF  BY EXTRUDING THROUGH ORIFICE {15}
260.~ Expressing non-uniform cross-section or non-linear product


DEFINITION

Classification: 72/260

Expressing nonuniform cross section or nonlinear product:

(under subclass 253.1) Methods and means for extruding a product which (a) varies longitudinally, with respect to its flow through the orifice, in cross-sectional size, shape, or axial orientation (without regard to a closed bottom on an otherwise tubular extruded article or a shaped head remaining as a residue in the chamber), or (b) is curved in its longitudinal extent, that is, the produce deviates from straight.

SEE OR SEARCH THIS CLASS, SUBCLASS:

64+, for twisting preformed axially moving work.

259, for a plural impeller device for extruding this type of product.