Advancing material of indeterminate length – By fluid current – And web storage
Patent
1986-02-28
1989-07-18
Jillions, John M.
Advancing material of indeterminate length
By fluid current
And web storage
34156, B65H 2014
Patent
active
048486337
ABSTRACT:
Disclosed is an apparatus for transporting a web about a nonlinear path without allowing the apparatus to contact the web. The apparatus includes a series of positive pressure nozzles which emit a primary jet flow of fluid in a single direction, and a secondary jet flow of fluid in a direction perpendicular to the primary flow. The two flows merge and transport the web on a cushion of air along the nonlinear path. The magnitude of the cushioned pad is controlled by a series of slide dampers which are positioned between adjacent nozzles, and the opening of these slide dampers controls the amount of exhaust from the merged flow so as to control the cushioned path. The last nozzle in the series will direct its primary flow in a direction opposite to that of the other nozzles in the series in order to maintain the overall pressure pad under the web. In an alternate embodiment, a second set of nozzles which provide a negative pressure are arranged around the convex side of the web to provide additional stability and to enable the drying of the web on both sides of the web.
REFERENCES:
patent: 3587177 (1971-06-01), Overly
patent: 4069595 (1978-01-01), Ahlbert et al.
patent: 4197972 (1980-04-01), Daane
patent: 4218833 (1980-08-01), Coar
patent: 4282998 (1981-08-01), Peekna
patent: 4288015 (1981-09-01), Curtin
patent: 4414757 (1983-11-01), Whipple
patent: 4606137 (1986-08-01), Whipple
Fadden David J.
Fontain E. Sam
Hagen Kenneth G.
Henshilwood William L.
Jillions John M.
Thermo Electron - Web Systems, Inc.
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