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:
Dec. 08, 2009
Filed:
Jul. 18, 2002
David E. Chupka, Middletown, OH (US);
Christopher L. Demler, Lebanon, OH (US);
David E. Chupka, Middletown, OH (US);
Christopher L. Demler, Lebanon, OH (US);
Kadant Black Clawson Inc., Mason, OH (US);
Abstract
The present invention relates to extraction bedplates (), (), (), (), (), (), () for use in apparatus () for defiberizing paper making stock and methods for making such bedplates. Preferred methods for making such bedplates (), (), (), (), (), (), () include the step of cutting a disc shaped blank from a metal plate and the step of forming holes (), (), (), (), (), (), (), () either the metal plate or the disc shaped blank. The holes (), (), (), (), (), (), (), () preferably are formed using a cutting stream, most preferably either a laser or a water jet. Use of a cutting stream to form the holes facilitates the cutting of holes (), (), (), (), (), (), (), () having non-circular, and preferably tesselatory, cross sections as well as holes (), (), (), (), (), (), (), () extending at acute angles with respect to an axis () of the bedplate.