Fluid pressure responsive transducer apparatus

Details Fluid pressure responsive transducer apparatus Fluid pressure responsive transducer apparatus

1975-12-11

1977-06-07

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Pulsator

60572, 91 49, 92 37, 137 82, F15B 700

Patent

active

040274810

ABSTRACT:
A fluid pressure transducer device including first fluid pressure responsive means and second fluid pressure responsive means which together define a sealed volume of fluid. The first fluid pressure responsive means is exposed to first and second input fluid pressures and responsive to variations in one or both thereof to vary the volume of the sealed volume as a function of the first input fluid pressure modified by the pressure ratio of the second input fluid pressure to the first input fluid pressure. The second fluid pressure responsive means is responsive to the changes in the sealed volume of fluid and produces an output force signal in response thereto. There may be provided a variable volume chamber containing a temperature responsive element vented to the sealed volume of fluid to cause an increase or decrease in the sealed volume to compensate for temperature variations of the sealed volume of fluid.

REFERENCES:
patent: 1384314 (1921-07-01), Fulton
patent: 2429695 (1947-10-01), McGrath
patent: 2551274 (1951-05-01), MacDuff
patent: 2747614 (1956-05-01), Gray
patent: 2942838 (1960-06-01), Peters

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