Fluid handling – Pressure modulating relays or followers – Plural series units
Patent
1975-06-02
1976-11-30
Cohan, Alan
Fluid handling
Pressure modulating relays or followers
Plural series units
137 82, G05D 1600
Patent
active
039943119
ABSTRACT:
A pneumatic amplifier is disclosed having a body, the body with two opposed heads, a sensor head, and a valve head. An air direction chamber is defined interiorly of the two heads and body, and is separated from the sensing chamber by means of a sealed piston. The piston is actuated at one side by means of back pressure on a jet orifice which is connected to a sensor supply, and the back pressure is translated into a movement of the flexible piston. In the valve chamber, a dart valve is actuated on one end by the piston, and its cone at the other end seats in a valve seat in pneumatic connection with the valve head. The valve head has a signal supply which, when not by-passed through the dart and its associated valve, passes out through a signal tube to actuate a signal device, whether ultimately pneumatic, electric, hydraulic, or other source of power. Optionally a diaphragm type piston is employed. The dart is formed of plastic having three or more vanes, the same seating within an air direction chamber but in loose fit pneumatically suspendable relationship thereto. The valve body also optionally has a manifold which diverts the signal supply to the signal tube responsive to the operation of the dart.
REFERENCES:
patent: 2446051 (1948-07-01), Leslie
patent: 3443587 (1969-05-01), Brooks
patent: 3692054 (1972-09-01), Buls
Cohan Alan
Tangen Drives, Inc.
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