Pressure sensor

Expansible chamber devices – Bellows type expansible chamber – With vibration damping means

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Details

F01B 1904, F16J 304

Patent

active

043578594

ABSTRACT:
Fatigue fractures in the bellows capsule of a bellows-type pressure sensor are prevented by wrapping the capsule with a vibration damping material such as an open cell polyurethane foam saturated with a fluid. In the preferred embodiment, wherein the sensor is employed in a gas turbine engine fuel control, the fluid may conveniently comprise liquid jet engine fuel.

REFERENCES:
patent: 2191861 (1940-02-01), Rymal
patent: 2376711 (1945-05-01), Mock
patent: 2827077 (1956-01-01), Mitchell
patent: 3545339 (1970-12-01), Sickmeier
patent: 3590693 (1971-07-01), Rasko
patent: 3969989 (1976-07-01), Maurer

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