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:
Mar. 23, 1982
Filed:
May. 12, 1980
George M Cunningham, Horseheads, NY (US);
Corning Glass Works, Corning, NY (US);
Abstract
Disclosed is an extrusion die for use in forming extruded honeycomb structures employing a face plate having a plurality of discharge slots and a back plate having a plurality of feed passageways. The face plate and the back plate are joined to one another by means of bonding, e.g. brazing, at the joint formed by abutting surfaces of the plates. Proper orientation between the face plate and the back plate are maintained during brazing such that the feed passageways and discharge slots remain properly associated by means of a plurality of alignment cavities having walls opening to and diverging toward and to the joint between the face plate and back plate. Pedestals project across the joint and mate with the alignment cavities such that movement between the back plate and face plate is permitted during the thermal expansion caused by brazing only in the direction perpendicular to the joint, thus assuring proper registry between feed holes and discharge slots which precludes failure of the brazed joint during extrusion.