Hydraulic web roll shaft

Details Hydraulic web roll shaft Hydraulic web roll shaft

B - Operations, Transporting

65

H

B65H 16/06 (2006.01) B65H 75/02 (2006.01) B65H 75/24 (2006.01)

Patent

CA 2326883

A web material roll rotatable retention assembly, comprising a shaft adapted to be inserted into a web material roll core and having a hydrogel filled chamber is disclosed. A hydrogel pressure applying assembly controllably applies pressure to the hydrogel and an outward pressure applying assembly pushes pressure applying members outwardly in response to the pressure of the hydrogel.

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