Patent · US Expired

Wet press with vibration control

US4902384A · kind A · utility

7Cited by

4References

9Claims

0Family size

Assignee

Eduard Kusters Maschinefabrik GmbH & Co. KG · DE

Inventors

Helmut Anstotz · Tönisvorst, DE
Bernhard Brendel · Norderstedt, DE
Gunter Schrors · Tönisvorst, DE

Key dates

Filing date	Jun 3, 1988
Grant date	Feb 20, 1990
Priority date	—
Expiry date	Jun 3, 2008

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21F3/02
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A wet press of a paper-making machine includes a pair of rolls defining a roll gap through which the paper to be treated and belt-shaped felt are simultaneously conducted. The felt is guided in a closed loop path by additional rolls which include a tightening roll. The tightening roll can be tilted to reduce roll vibrations by tightening the felt to set vibratory marks formed in the felt at an angle relative to the transverse width of the felt and the roll gap. A controllable positioning device is provided which includes a motor operated by a controller during predetermined time intervals or as a function of actual vibrations sensed at the pair of rolls forming the roll gap to automatically vary the tilt angle.

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