Air cushioned turn bar

Details Air cushioned turn bar Air cushioned turn bar

1976-08-24

1977-08-23

Schacher, Richard A.

Advancing material of indeterminate length

By orbitally traveling material-engaging surface

Including details of roll or mount

226 97, B65H 2332

Patent

active

040434958

ABSTRACT:
An apparatus including a hollow cylindrical member for hydrodynamically supporting and changing the direction of a continuously moving sheet of web material through a predetermined angle. The cylindrical member comprises a series of apertures through which fluid under pressure passes from the hollow portion to the exterior surface of the bar. Each aperture includes a curved surface extending from the hollow portion to the exterior surface, causing the fluid to flow in a laminar path through the aperture. The fluid substantially follows the contour of the exterior surface of the cylindrical bar, thereby forming a fluid cushion for the sheet of web material as it passes over the bar.

REFERENCES:
patent: 2702986 (1955-03-01), Kadosch
patent: 3542621 (1970-11-01), Calhoun
patent: 3622058 (1971-11-01), Vits
patent: 3807056 (1974-04-01), Norfolk

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