Digital gas metering system using tri-stable and bi-stable solen

Details Digital gas metering system using tri-stable and bi-stable solen Digital gas metering system using tri-stable and bi-stable solen

1996-08-19

1999-03-02

Hepperle, Stephen M.

Fluid handling

Systems

Dividing into parallel flow paths with recombining

25112908, 2511291, F16K 1124

Patent

active

058758178

ABSTRACT:
A digital gas metering system includes inlet and outlet manifolds, a plurality of conduits each extending between the inlet manifold and the outlet manifold, and a solenoid-operated valve in each conduit. At least one of the valves is a tri-stable valve. Each tri-stable valve has a highest flow setting, a lowest flow setting, and an intermediate flow setting. The preferred embodiment utilizes at least two tri-stable valves, and these have respective highest flow settings which form a geometric progression in which each term is substantially triple the preceding term.

REFERENCES:
patent: 3190608 (1965-06-01), Hassa
patent: 4901758 (1990-02-01), Cooke et al.
patent: 5150690 (1992-09-01), Carter et al.
patent: 5329965 (1994-07-01), Gordon
patent: 5441232 (1995-08-01), Tanaka

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