Low inertia apparatus and method for accumulating and applying t

Details Low inertia apparatus and method for accumulating and applying t Low inertia apparatus and method for accumulating and applying t

1997-06-20

1998-07-07

Nguyen, John Q.

Winding, tensioning, or guiding

Tension control or brake

Supply controlled

2423313, 226 97, B65H 2324

Patent

active

057756236

ABSTRACT:
A web (44) passes over an air bar (40) or metering drum, defines a loop (48, 50, 52) within an open space (46) defined between two pneumatic tensioning wall members (14, 16), and passes over an air bar (42) or metering drum. Pressurized air issues through apertures (36) arranged in rows along web control surfaces (32, 34) to establish curtains of air flowing between the surfaces and the web, thereby applying tension to the web due to the Bernoulli and viscous drag effects.

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patent: 4493548 (1985-01-01), Ateya
patent: 5203485 (1993-04-01), Cahill et al.
patent: 5209387 (1993-05-01), Long et al.
patent: 5242095 (1993-09-01), Creapo et al.
IBM Bulletin vol. 17, No. 9, Feb. 1975.

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