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US 5,392,653 AGranted
Pressure transducer magnetically-coupled interface complementing minimal diaphragm movement during operation
AssigneeAllergan, Inc.
InventorsFrank Zanger, Tim Surber, Donald E. Lehmer
Life of this patent
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Abstract
A pressure measurement system includes a diaphragm and a chamber for exposing one side of the diaphragm to a fluid. A force transducer is provided for measuring force exerted by the fluid on the one side of the diaphragm independent of diaphragm position. A ferromagnetic plate is attached to the diaphragm to enable removable coupling of the diaphragm with a magnet permanently attached to the force transducer.
Claims15
A pressure measurement system comprising:
- a diaphragm;
- means for exposing one side of said diaphragm to a fluid;
- force transducer means for measuring force exerted by said fluid on said one side of said diaphragm with minimal movement of diaphragm position;
- and
- means for removably coupling said force transducer means to an opposite side of said diaphragm, the means for removably coupling comprising a ferromagnetic plate attached to said diaphragm and magnet means, attached to said force transducer means, for removably engaging the ferromagnetic plate.
2 more elements
A fluid pressure measurement system comprising:
- a chamber having a fluid inlet and a fluid outlet, said chamber further including means for defining an opening therein;
- a diaphragm sealably disposed across said opening;
- force transducer means for measuring force exerted on said diaphragm by the fluid in the chamber;
- and
- means for removably coupling said force transducer means to said diaphragm, the means for removably coupling comprising a ferromagnetic plate attached to said diaphragm and magnet means, attached to said force transducer means, for removably engaging the ferromagnetic plate.
2 more elements
Dependencies are inferred from the claim text.