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. 20, 1991
Filed:
Oct. 16, 1989
Hitachi, Ltd., Tokyo, JP;
Abstract
A rolling roll comprises a metal rolling roll body, a ceramic sleeve into which the roll body is inserted with a gap therebetween, thereby providing a working surface of ceramics at an outer periphery thereof, fasteners provided on the roll body at both sides of the sleeve for pressing the side faces of the sleeve thereby to fix the sleeve to the roll body, and at least one spacer having a larger coefficient of thermal expansion than that of the roll body and inserted between the sleeve and the fastener so that the sleeve is axially pressed by the fastener to fix the sleeve to the roll body.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile