Advancing material of indeterminate length – By fluid current – And web storage
Patent
1992-02-21
1994-12-06
Stodola, Daniel P.
Advancing material of indeterminate length
By fluid current
And web storage
34640, 34654, B65H 2014
Patent
active
053702891
ABSTRACT:
Apparatus including a single sided airfoil floater conveyor for floatingly conveying a running web of indeterminate length. The apparatus has a series of longitudinal air bars arranged in parallelism and spaced along the path of web movement. The bars have a rear edge and a perforated foil extends along and from the bar rear edge and terminates in a trailing edge. A tail plate extends along the foil trailing edge and away therefrom in a direction of web movement, and forms an air outlet opening with the next adjacent air bar for the exit of spent air. The tail plates act to maintain velocity of the air passing thereover and thereby results in a decrease of air pressure on the web and consequently tends to pull the web down. This inhibits the web from excessive floating and prevents uncontrolled instability and excessive fluttering of the web.
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Advance Systems Inc.
Stodola Daniel P.
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