Expansion member, particularly for the breast box of a paper mac

Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...

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Details

162344, 162347, D21F 102

Patent

active

051204029

ABSTRACT:
An expansion member which extends transversely over the width of a paper making machine, particularly at the breast box of the paper machine, which member furthermore serves to change the position of a structural part, like a ledge or diaphragm. The member is subdivided, transverse to the machine direction, into a plurality of cells each of which can be acted on by pressure. The cells are separated from each other by vertical partition walls of high stretchability and are further defined by transverse walls extending transverse to the machine direction and joining the partition walls. At least one transverse wall or a further wall outside of and connected with the one transverse wall is highly stretchable in the regions of the transverse or further walls which are at the individual partition walls, as compared with the other regions of the transverse wall or the thereto connected further wall.

REFERENCES:
patent: 2928464 (1960-03-01), Western et al.
patent: 4867847 (1989-09-01), Kade
patent: 4877486 (1989-10-01), Kade et al.
patent: 4980026 (1990-12-01), Kade

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