Air injection device

Details Air injection device Air injection device

1993-02-08

1994-01-04

Skaggs, N. Grant

Sheet feeding or delivering

Feeding

Separators

138 45, 271108, B65H 314

Patent

active

052753930

ABSTRACT:
An air injection device including a housing defining an air duct therein and a valve associated with the air duct for controlling the flow of air therethrough from a pressure source (55). The valve has a sheet (59) of flexible material positioned within the air duct, the sheet (59) being mounted on a face (60) of the air duct with the ends of the sheet (59) restricted from moving in a direction substantially orthogonal to the face (60) but free to move in a direction parallel to the face (60). The sheet (59) is operably connected to control, such as a solenoid valve (62), for controlling the contour of the sheet (59), within an air flow passing through the air duct. In one embodiment a second sheet is positioned on the inside top face of the duct opposite the first sheet (59). The air injection device is particularly useful for application with a sheet separator-feeder.

REFERENCES:
patent: 1950774 (1934-03-01), Biggs
patent: 3513881 (1970-05-01), Kinsell
patent: 4299381 (1981-11-01), Smith
patent: 4451028 (1984-05-01), Holmes et al.
patent: 4550903 (1985-11-01), Moore
patent: 4566683 (1986-01-01), Moore
patent: 4596385 (1986-06-01), Silverberg
patent: 4699369 (1987-10-01), Zirilli
Wenthe, Stack Weight Sensing Paper Tray, Xerox Disclosure Journal, vol. 7, No. 4, Jul./Aug. 1982, p. 229.

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