Patent · US Expired

Suction roll in particular for a paper web dryer

US5465502A · kind A · utility

8Cited by

2References

20Claims

0Family size

Assignee

Sulzer-Escher Wyss GmbH · CH

Inventors

Herbert Holik · Ravensburg, DE
Werner Leitenberger · Schlier, DE
Reinhard Pinter · Graz, AT

Key dates

Filing date	Jul 19, 1993
Grant date	Nov 14, 1995
Priority date	—
Expiry date	Jul 19, 2013

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21F5/042
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A suction roll (1), in particular for a paper web dryer, comprising a perforated roll jacket (2), with at least one non-rotatable hollow shaft (3) which communicates with the interior of the suction roll via openings (7, 7') and at least one closing member (9) displaceable in the axial direction for separating off at least one peripheral region of the suction roll. The at least one, in particular disc-shaped dividing wall (5) is located in the suction roll interior and has at least one, preferably central opening (22). It can be of benefit when the dividing wall (5) corotates with the roll and/or when the at least one closing member (9) has the form of a hollow cylinder. Further, if the non-rotatable hollow shaft (3) is designed to be axially displaceable, it can be used to control the size of the opening (22) in the dividing wall (5).

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