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US 5,178,937 AGranted
Belt for papermaking machines
AssigneeThomas Josef Heimbach GmbH & Co.
InventorsEberhard Janssen, Wolfgang Schaefer, Hans-Peter Richter
Life of this patent
Estimating the term…
Abstract
A papermaking machine belt comprising a flexible belt-layer impermeable to liquids which is partly integrated with a support track with cavities.
Claims20
A papermaking machine belt, in particular for use in wet pressing and the extended compression slit, the belt comprising:
- (a) a flexible, liquid impermeable belt layer having first and second sides, at least one of said sides being smooth;
- (b) a support track integrated into said layer and having a portion extending outwardly beyond one of said sides for providing a plurality of drainage channels;
- and
- (c) at least a first addition thread wholly integrated into said layer and progressing therealong in zig-zag manner relative to the direction of advance of said layer, said thread having first and second alternating segments with said first segments disposed within said track and said second segments outside said track.
1 more element
A belt for wet pressing and the like in a papermaking machine, comprising:
- (a) a flexible, liquid impermeable belt layer having a first smooth side and an opposite second side;
- (b) a support track comprising a plurality of wire spirals arrayed into a series of rows, each row extending transverse to the direction of advance of said layer and each spiral of each row having a first portion disposed within said layer and a second portion extending outwardly beyond said second side for therewith forming a plurality of drainage channels;
- and
- (c) an addition thread wholly integrated into said layer and lacing said track thereto, said thread having first and second alternating segments with one of said first and second segments passing through at least some of the spirals of some of said rows and the other of said first and second segments being removed from said spirals.
1 more element
Dependencies are inferred from the claim text.