US PATENT SUBCLASS 493 / 459
.~ Pulling over an edge (e.g., curling, etc.)

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

Internet Version by PATENTEC © 1999      Terms of Use


493 /   HD   MANUFACTURING CONTAINER OR TUBE FROM PAPER; OR OTHER MANUFACTURING FROM A SHEET OR WEB

395  DF  BENDING {6}
459.~ Pulling over an edge (e.g., curling, etc.)

DEFINITION

Classification: 493/459

Pulling over an edge (e.g., curling, etc.):

(under subclass 395) Method or apparatus comprising the application of tensile forces to the workpiece and drawing that workpiece over a projecting member to put greater forces on the surface of the workpiece facing away from the projecting member than on the surface of the workpiece facing toward the projecting member to stress the workpiece beyond its elastic limit thereof.