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:
Aug. 13, 1991
Filed:
Aug. 21, 1990
Applicant:
Inventors:
Assignee:
Masuda Seisakusho Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21B / ;
U.S. Cl.
CPC ...
29895213 ; 29125 ; 2989521 ;
Abstract
The present invention provides a porous roll assembly which comprises a core shaft and a porous roll body fitted on the shaft. The roll body include a stack of axially compressed porous disks. According to the method of the invention, the stack of porous disk is compressed divisionally and successively, so that all of the disks are evenly compressed even if the roll body is relatively long. The resulting roll body is substantially uniform in Shore hardness and porosity over the entire length of the roll body.