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:
Nov. 15, 1994
Filed:
Apr. 08, 1993
Werner Noky, Mainz-Gonsenheim, DE;
Schott Glaswerke, Mainz, DE;
Abstract
A process and apparatus are described for the production of a filter in the form of a ceramic honeycomb body monolith, starting with a blank of the honeycomb body monolith with the bilaterally open ducts. An image-recording and processing system scans the end faces of the monolith and determines the deviations of the actual geometry of the ducts to be alternatingly sealed from the geometry of an idealized honeycomb body. The image-processing system determines zones on the respective end face of the monolith which correspond, within predeterminable tolerances, to the geometry of the idealized honeycomb body, wherein zones are determined having a maximally high number of ducts. In correspondence with the determination of the aforementioned zones, a processing route is established which predetermines which one of several metering heads with a varying number of nozzles will be activated. The nozzles then inject a plugging compound into the thus-determined ducts. After sealing of the determined ducts on one end face, the monolith is turned by 180.degree. in a clamping and turning device whereupon the ducts on the second end face are sealed in a corresponding fashion, but in a pattern complementary to that on the first end face. The thus-prepared monolith is thereafter subjected to a ceramic-production process.