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:
Jul. 27, 1999
Filed:
Jul. 24, 1997
Robert R Murray, Madbury, NH (US);
Heidelberger Druckmaschinen, Heidelberg, DE;
Abstract
A device for controlling the tension in a web of a printing press includes an adjustably positionable dancer roll coupled to an air cylinder. The dancer roll engages the web at a position subsequent to the chill exit nip rolls and prior to a next nip roll pair, e.g., the slitter unit entrance nip rolls. The air cylinder applies a biasing force on the dancer roll to maintain contact between the dancer roll and the web. A control device is coupled between the dancer roll and the next nip roll pair. The control device monitors the position of the dancer roll and increases or decreases the speed of the next nip roll pair based on the direction and magnitude of the dancer roll movement. In this manner, the tension in the web is kept substantially constant between the chill exit nip rolls and the next nip roll pair.