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:
Jun. 11, 1985
Filed:
Apr. 21, 1983
Applicant:
Inventors:
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03B / ; C04B / ; C04B / ;
U.S. Cl.
CPC ...
156 89 ; 156252 ; 156253 ; 156510 ; 156513 ;
Abstract
The disclosed method and device use a gear rotatably carried by a holder and a movable support board supporting a film-attached ceramic honeycomb body, the gear having pointed teeth disposed at a suitable pitch, and as being thrusted into the body through the film attached to the body the gear is allowed to sway, so that the film is perforated at positions corresponding to selected open ends of throughholes of the body while allowing the gear to sway, so that the throughholes are selectively plugged by pressing sealant therein through the perforated film and the body is rendered into a ceramic honeycomb filter with filtering passages formed of partitions of the thus plugged throughholes.