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. 11, 1983
Filed:
Jan. 21, 1981
Junichiro Naito, Toyokawa, JP;
Shinichi Yamamoto, Takahama, JP;
Zituo Suzuki, Aichi, JP;
Mitsuru Asano, Okazaki, JP;
Nippon Soken, Inc., Nishio, JP;
Abstract
An extrusion device comprises a die provided with feed passageways and grid-shaped extrusion slots, and a die mask covering the peripheral portion of the die on the extrudable material outlet side. The die mask is provided with a plurality of disconnected openings which are formed in the lower end of the inner surface thereof at predetermined intervals so as to be communicated with the extrusion slots of the peripheral portion of the die. By this extrusion device, the extrudable material is supplied from the openings into the outer periphery of the extruded body to form a honeycomb structure having a smooth outer peripheral surface and a thick outer wall.