US PATENT SUBCLASS 72 / 254
.~ With cutting


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

253.1  DF  BY EXTRUDING THROUGH ORIFICE {15}
254.~ With cutting {1}
255  DF  .~.~> Severing product from stock or residue


DEFINITION

Classification: 72/254

With cutting:

(under subclass 253.1) Method or means including a step of, or means for cutting* which is not excluded by Lines With Other Classes, Relationship to Combination Classes, With Cutting, of this class.

(1) Note. Splitting a workstream on a bridge mandrel or a multiapertured extrusion die is considered to be part of the extrusion process and not cutting, and is found in disclosures of subclasses below, particularly subclasses 261 and 269.

(2) Note. If it is evident that a slug is punched out during a piercing operation the patent is placed here.

SEE OR SEARCH THIS CLASS, SUBCLASS:

256, for extrusion combined with billet piercing by plastic deformation and without removal of material, when the piercing occurs as a distinct and separate metal deforming operation.

264+, for extrusion combined with billet piercing by plastic

deformation and without removal of material when the piercing occurs as a distinct and separate metal deforming operation and when the piercing is accomplished by a mandrel as a part of or in connection with extrusion.

324+, for other types of metal deformation combined with cutting. SEE OR SEARCH CLASS

425, Plastic Article or Earthenware Shaping or Treating: Apparatus,

308, for extrusion apparatus for nonmetals combined with means to sever the product.