Pressure-sensing transducer
OwnerMaurice J. Paquin, James J. Radleighinventors
Life of this patent
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Abstract
A pressure-sensing transducer comprised of a diaphragm sandwiched between two discs having substantially non-moving walls forming two adjacent chambers. Concentric electrodes on opposite faces of one of the chambers form a pair of capacitors. Ports are provided in the discs in communication with the chambers for application of fluid pressures. The transducer assembly is mounted in a housing and isolated from shock by fluid tubing supports attaching the ports on opposite sides of the assembly to the housing. The transducer can be formed of a plurality of discs and diaphragms in a sandwiched relationship to produce a family of transducers.
Claims13
A pressure-sensing transducer comprising:
- a first substantially rigid disc having a recessed face;
- a second substantially rigid disc having a recessed face;
- a flexible diaphragm sandwiched between said first and second discs forming first and second chambers;
- first electrode means on one side of said diaphragm;
- second electrode means on the wall of the recess opposite the electrodes on the diaphragm;
- a housing surrounding and enclosing the sandwiched assembly of first and second discs and flexible diaphragm;
- and
- means for connecting said first and second chambers to a source of fluid comprising flexible tubing adapted to isolate said assembly from external shocks.
A pressure-sensing transducer assembly comprising:
- a plurality of discs having recesses in one or more faces;
- at least one diaphragm being sandwiched between said discs whereby a plurality of chambers are formed;
- a pair of concentric electrodes on said at least one diaphragm;
- at least one electrode on the face of the recess opposite said pair of electrodes;
- housing means surrounding the sandwiched assembly of discs and diaphragms;
- and
- resilient conduit means for connecting said chambers to a source of fluid under pressure and for supporting said discs within said housing means and isolating said discs from shock applied to said transducer assembly.
A pressure-sensing transducer assembly comprising:
- a plurality of discs having recesses in one or more faces;
- at least one diaphragm being sandwiched between said discs whereby a plurality of chambers are formed;
- a pair of concentric electrodes on said at least one diaphragm;
- at least one electrode on the face of the recess opposite said pair of electrodes;
- means connecting said chambers to a source of fluid under pressure;
- housing means surrounding the sandwiched assembly of discs and diaphragms;
- and
- a tubing formed in at least a partial helix supporting said assembly in said housing.
A pressure-sensing transducer assembly comprising:
- at least three discs having recesses in one or more faces thereof;
- at least two diaphragms sandwiched between said discs and forming at least four chambers;
- pairs of concentric electrodes on at least one diaphragm at least one electrode on the face of the recess opposite said pair of electrodes;
- housing means surrounding the sandwich assembly of discs and diaphragms;
- and
- resilient conduit means for connecting each of said chambers to sources of fluid pressure external of assembly.
A pressure-sensing transducer assembly comprising in combination two diaphragms and:
- three discs having recesses in one or more faces;
- a pair of concentric electrodes on each diaphragm;
- said two diaphragms alternating between said discs forming at least four chambers whereby electrodes are in chambers on opposite sides of the center disc;
- at least one electrode on each face of the recess of said center disc;
- housing means surrounding the sandwich assembly of discs and diaphragms;
- means connecting said chambers to a source of fluid under pressure;
- shock-isolating means supporting said assembly and said housing;
- and
- force-equalizing means for equalizing the force applied to the pair of diaphragms.
Dependencies are inferred from the claim text.