Apparatus for equalizing tension in a traveling web

Details Apparatus for equalizing tension in a traveling web Apparatus for equalizing tension in a traveling web

1998-07-08

1999-10-26

Jillions, John M.

Winding, tensioning, or guiding

Tension control or brake

Supply controlled

242419, 2426151, 226 18, B65H 2300

Patent

active

059713135

ABSTRACT:
The present invention provides apparatus for equalizing the tension across the width of a web traveling under tension in a generally flat plane. The apparatus includes a longitudinal extending bladder formed of an elastic material and inflated with a fluid at a predetermined pressure, and a support structure for supporting the bladder beneath the traveling web and across the width thereof so that the bladder is positioned at a predetermined height above the flat plane of the traveling web whereby any variances in the tension across the width of the web will be equalized by the bladder. A plurality of finger elements are mounted to the support structure to extend between the bladder and the traveling web to prevent abrasive wear on the bladder by the traveling web.

REFERENCES:
patent: 3261566 (1966-07-01), Epstein
patent: 5419509 (1995-05-01), Krayenhagen

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