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:
Jan. 15, 1991
Filed:
Aug. 24, 1989
Richard F Beckmeyer, Clarkston, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A method for manufacturing a monolith extrusion die includes the steps of loosely stacking individual tube elements to form a tube stack having reference surfaces therein and feed holes therethrough; fixturing individual shaping teeth together for location with respect to the reference surfaces to form a precise extrusion slot pattern of intersecting rows with the shape of the monolith to be formed by the die. In one method, the shaping teeth are located as a unit and then inserted into a loose tube stack as a unit and then bonded together as a unitary extrusion die. In another method, the shaping teeth are fixtured in a loose tube stack as it is formed and thereafter the fixtured teeth and tube stack are bonded to form a unitary extrusion die.