Measuring and testing – Fluid pressure gauge – With protective separator
Patent
1997-01-08
1997-11-04
Dombroske, George M.
Measuring and testing
Fluid pressure gauge
With protective separator
G01L 700
Patent
active
056842538
ABSTRACT:
The present invention relates generally to a pressure sensor and, more specifically, to a pressure equalization structure that balances the forces on the pressure sensitive component in order to reduce the stress that could otherwise be imposed on its piezoresistors. The pressure sensor provides a housing in which a cavity is formed. Within the cavity, a pressure sensitive component is disposed between a first seal and a second seal in order to expose a first surface of the pressure sensitive component to a first conduit and a second surface of the pressure sensitive component to a second conduit. The pressure surrounding the pressure sensitive structure is generally equalized to one of the first and second conduits by providing a bypass conduit connected therebetween.
REFERENCES:
patent: 5184107 (1993-02-01), Maurer
patent: 5257547 (1993-11-01), Boyer
patent: 5327785 (1994-07-01), Maurer
patent: 5351550 (1994-10-01), Maurer
patent: 5410916 (1995-05-01), Cook
patent: 5412994 (1995-05-01), Cook et al.
Bonne Ulrich
Maurer D. Joseph
Dombroske George M.
Honeywell Inc.
Lanyi William D.
Oen William L.
Shudy Jr. John G.
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