Fluidic valve

Details Fluidic valve Fluidic valve

1974-12-23

1976-06-15

Knowles, Allen N.

Railways

Fluid supported car or simulated aerial vehicle

104134, 214 1BE, B61B 1308

Patent

active

039629759

ABSTRACT:
A fluidic valve allowing to propel and sustain a moving device on an air-cushion, by means of a fluid under pressure issued from caissons serving as guide-rails, through the opening, when the moving device travels, of valves forming air-locks and drawers, said valves comprising a sleeve perforated so as to provide the valves with fluid towards the outlet, in a laminar discharge, with venturi and vortex effects intended to suck up the movable obturator towards the outlet, a duct or a fluid container. An over-pressure caused by a movable object passing at the outlet of the sleeve drives the movable obturator downwards, disclosing the lights of the sleeve. The fluid leaves the container. If the object is removed, the fluid flows more quickly and, thanks to venturi and vortex effects, a depression occurs, which drives the movable obturator upwards, thus stopping the outflow of the fluid. The movable obturator is maintained in a high position by means of a guiding ensured by the recuparation of a fluid issued from the container depending on the clearance existing between the movable obturator and the sleeve, the flow of which is regulated by the gauged duct securing the .DELTA.p required for maintaining the piston in a high position.

REFERENCES:
patent: 3081886 (1963-03-01), Flexman
patent: 3685788 (1972-08-01), Bloomfield

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