Pressure regulation apparatus including cooperating valve member

Details Pressure regulation apparatus including cooperating valve member Pressure regulation apparatus including cooperating valve member

1991-04-08

1992-09-15

Focarino, Margaret A.

Conveyors: fluid current

Intake to fluid current conveyor

Combined intake and discharge

137102, 137566, 417 2, 417427, B65G 5100

Patent

active

051471540

ABSTRACT:
A pressure regulation apparatus, for a bi-directional pneumatic transportation system, has first, second, and third flow chambers with ports provided at two of the chambers. A pumping device alternatively pumps air from the chamber lacking a port to either of the ported chambers. An air dam cooperates with a valve assembly that responds to internal pressures induced by the pumping device to separate one of the ported chambers into sub-chambers and to selectively isolate one of the sub-chambers from the other to bi-directionally control air flow between the ports. The bi-directional pneumatic transportation system in accordance with the present invention incorporates such a pressure regulation apparatus to control transportation of an item between stations connected by a pneumatic tube network.

REFERENCES:
patent: 3053475 (1962-09-01), Tonne
Skilcraft Security Equipment Company pamphlet, no date.
Mercury Tube Systems drawing, no date.

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