Method and device for detecting a fluid flow rate

Details Method and device for detecting a fluid flow rate Method and device for detecting a fluid flow rate

1986-05-27

1989-05-02

Goldstein, Herbert

Motors: expansible chamber type

Application of motive fluid at different pressures to...

7386147, 7386153, G01F 138, F01B 100

Patent

active

048257478

ABSTRACT:
A method and device are provided for detecting a fluid flow rate, said device comprising a body in which is formed a passage for the fluid, said passage comprising at least two cross sections of different values, a piston having two faces cooperating with the housing, said piston defining with said housing two zones situated on each side of the two faces of said piston, means for returning said piston to a first position or rest position, each of said zones being substantially at the same pressure as said passage at the level of one of the two cross sections.

REFERENCES:
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patent: 3678754 (1972-06-01), Amir et al.
patent: 3910112 (1975-10-01), Gerlach
patent: 4484479 (1984-11-01), Eckhardt

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