Patent · US Expired

Control roller having speed-dependent pressing force

US7370580B2 · kind B2 · utility

0Cited by

7References

13Claims

0Family size

Assignee

Heidelberger Druckmaschinen AG · DE

Inventors

Christian Gorbing · Heidelberg, DE
Thomas Schmidt · Heidelberg, DE

Key dates

Filing date	Feb 9, 2005
Grant date	May 13, 2008
Priority date	—
Expiry date	Feb 4, 2026

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41F21/104
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

In an apparatus for adapting the pressing force of a control roller on a control can in a sheet-processing machine by a torsion spring, the apparatus either changes the effective spring length or the spring stiffness as a function of the rotational speed of the sheet-processing machine. The spring can be a torsion spring rod with an actuator setting the spring force by changing the prestress. A stiffening element can be connected to the torsion spring rod and set the spring force by changing the spring stiffness of the torsion spring rod.

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