Apparatus for controlling air flow in an air duct

Details Apparatus for controlling air flow in an air duct Apparatus for controlling air flow in an air duct

1994-09-13

1998-06-23

Pike, Andrew C.

Conveyors: fluid current

Fluid current conveyor outlet means

With material separating receptacle

406 70, 19105, 1375135, 1375278, B65G 5360

Patent

active

057695733

ABSTRACT:
A throttle valve is provided within a discharge air duct located adjacent a fiber duct receiving a fiber laden air stream. The throttle valve cooperates with a stop in a lowered position to form a gap to allow a minimal air flow therethrough. In addition, a weight is provided on an arm attached to the throttle valve for pivoting therewith. The weight is disposed to counterbalance a substantial portion of the weight of the flap valve in the raised position of the valve so that the air flow maintains the valve in the open condition.

REFERENCES:
patent: 3580644 (1971-05-01), Ballard
patent: 4141380 (1979-02-01), Lenk
patent: 4878784 (1989-11-01), Binder et al.

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