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:
Jan. 21, 1997
Filed:
Aug. 04, 1995
Applicant:
Inventor:
Jilani Chrigui, Creil, FR;
Assignees:
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Heidelberg Harris, S.A., Montataire, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41F / ;
U.S. Cl.
CPC ...
101216 ; 101212 ;
Abstract
A method and apparatus for damping bending vibration in a group of cylinders in a printing press is provided. In accordance with the method, the frequencies of the fundamental vibration modes are initially determined and then dynamic dampers are disposed so as to damp the vibrations. In accordance with the apparatus, at least one dynamic damper is disposed inside the envelope of a cylinder in the group of cylinders. It may be formed as a mass held elastically inside the envelope and having a vibration frequency that corresponds to the frequency of a fundamental vibration mode of the group of cylinders.