Patent · US Expired

Arrangement for adjusting and measuring web tension levels

US4014491A · kind A · utility

3Cited by

6References

5Claims

0Family size

Assignee

AGFA-Gervaert AG · DE

Inventors

Hans Gref · Cologne, DE
Wolfgang Schweicher
Hans Frenken · Odenthal, DE
Heinz Bussmann
Karl D. Voss · Standish, US
Helmut Schaffer · Unterleim, AT
Willi Junkersdorf

Key dates

Filing date	Nov 6, 1974
Grant date	Mar 29, 1977
Priority date	—
Expiry date	Nov 6, 1994

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65H23/1888
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

The tension level of moving webs of material is adjusted or measured and regulated by means of a guide roller mounted on parallel swing arms which include an angle 0 <.alpha. <90.degree. with the horizontal, .alpha. lying in an angular range of .+-. 15.degree. around the value .alpha..sub.M at which the traction applied to the web by the guide roller is at a minimum.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.