The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 1999
Filed:
Jul. 07, 1998
Keith Robert Sekera, Penn Township, PA (US);
Albert Bruce Cady, Pittsburgh, PA (US);
James Edward Buzcak, Slickville, PA (US);
CBS Corporation, Pittsburgh, PA (US);
Abstract
A pilger die assembly in which the die has an annular body with an opening extending from a central, through bore to the peripheral surface. The opening subtends a circumferential angle at the through bore of less than 180.degree.. The cylindrical arbor has a section of reduced cross-sectional dimension, preferably formed by a flat. The die is positioned with the opening aligned with the flat, slid into coaxial registration with the arbor, rotated to a captured position in which the opening is no longer aligned with flat on the arbor and then pushed axially to engage a key on the arbor in a keyway extending axially from one side face of the die. A stop screw threaded into the arbor adjacent the other side face of the die locks it in place.