Advancing material of indeterminate length – By fluid current – And web storage
Patent
1981-02-05
1982-08-03
Christian, Leonard D.
Advancing material of indeterminate length
By fluid current
And web storage
226197, 226 7, B65H 1728, B65H 1732
Patent
active
043424139
ABSTRACT:
Apparatus for providing an air cushion to support web material during turning thereof and including means defining two plenums providing a flow path for pressurized gas prior to the gas exiting from a slit adjacent a generally curved fluid flow attachment surface. The dual plenum arrangement results in an even air distribution at the location of the slit thus contributing to web stability and control as the web floats on a cushion of air comprised of the pressurized air and ambient air along the generally curved fluid flow attachment surface due to the Coanda effect.
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patent: 4043495 (1977-08-01), Sander
patent: 4136808 (1979-01-01), Reba
patent: 4186860 (1980-02-01), Reba
patent: 4197972 (1980-04-01), Daane
Christian Leonard D.
Crown Zellerbach Corporation
Lampe Thomas R.
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