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:
Feb. 05, 2002
Filed:
Dec. 02, 1999
George M. Cunningham, Horseheads, NY (US);
Lawrence S. Rajnik, Corning, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
An extrusion die for forming a cellular honeycomb structure having a finned protrusion extending from at least one cell wall of the honeycomb structure. The extrusion die is a composite extrusion die that comprises a primary extrusion die body having an inlet face and an outlet face, and at least a first insert member that is secured into a first intersection formed by a pair of intersecting slots at the outlet face of the primary extrusion die body. More preferably, a plurality of insert members are secured into a plurality of intersections, each intersection being formed by a pair of intersecting slots and each of the intersections being defined by four pegs/pins at the outlet face of the primary extrusion die body. Each of the insert members is adapted to fit into one of the intersections of the die body, where the size and shape of the insert members and the positioning of the insert members into a plurality of the intersections cuts off the flow path of an extrudable material through the plurality of the intersections. Thereby, when a cellular honeycomb structure is extruded through the composite extrusion die, the honeycomb structure comprises a plurality of finned protrusions extending from a plurality of the cell walls of the honeycomb structure corresponding to the plurality of the intersections of the die body into which the insert members are secured.