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, 1992
Filed:
Jan. 21, 1992
Applicant:
Inventor:
Wolfgang Prem, Ustersbach, DE;
Assignee:
Man Roland Druckmaschinen AG, Augsburg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41F / ;
U.S. Cl.
CPC ...
101375 ; 101479 ; 101483 ;
Abstract
To securely attach a printing cylinder sleeve (3, 16, 28, 38, 38') over a cylinder core structure (2, 15, 27, 37), the core structure has grooves (4, 23, 29) located in the vicinity of axially remote end regions, which grooves are closed off by expansion rings (12, 25, 35, 38, 38'), which can be expanded by applying a hydraulic or pneumatic pressure medium, such as grease, or compressed air, between the core structure and the expansion ring. Connecting ducts, filled with grease, or connectable to a source of air pressure, are formed in the cylinder, connecting with the grooves therein.