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:
Sep. 13, 1994
Filed:
Sep. 24, 1992
Gunther Machguth, Wurenlos, CH;
Beat Muller, Mutschellen, CH;
Rolf Lehmann, Rudolfstetten, CH;
Eugen Schnyder, Waltenschwil, CH;
Sulzer-Escher Wyss AG, Zurich, CH;
Abstract
A printing cylinder for a rotary printing press has a support, which is fixed against relative rotation, and a jacket rotatable around the latter, which is supported by a row of support elements, disposed axially side-by-side and individually controllable and radially displaceable at least in part in order to attain an even printing pressure across the width of the cylinder while avoiding any bending of the jacket. The jacket is constructed of three coaxial tubes, an interior tube, a filler body and a printing forme support, at least two of which, or even all three, in the rest state, are separated by a small gap so that they can be easily pulled off each other and exchanged in order to change the printing press over to another print pattern or another diameter or register. By charging the sealed interior chamber with pressure, for example with the use of the fluid pressure required for the support elements, the gap(s) are closed, so that the individual jacket parts have a press fit with each other and rotate together. By reducing the interior pressure to lower pressures, for example atmospheric pressure or a partial vacuum, it is possible to open the gap(s) again selectively.