Measuring and testing – Fluid pressure gauge – Diaphragm
Patent
1997-08-25
1999-09-07
Patel, Harshad
Measuring and testing
Fluid pressure gauge
Diaphragm
338114, G01L 902, H01C 1010
Patent
active
059489901
ABSTRACT:
The present invention relates to a pressure-sensitive resistor in which the resistance between two electrode patterns varies in response to applied pressure, wherein the desired pressure-sensitive characteristics of the resistor can be readily achieved by appropriately adjusting the degree of the planar-positional difference between the two electrode patterns. This pressure-sensitive resistor comprises two insulating substrates, each one of which has an opposing surface facing the other substrate, and at least one of which is flexible; and at least one pressure-sensitive module which comprises a pressure-sensitive conductor disposed between said insulating substrates and having a predetermined electrical resistance in directions along the surfaces of said insulating substrates, and two electrode patterns situated between at least one of said insulating substrates and said pressure-sensitive conductor, wherein said two electrode patterns are formed on at least one of the opposing surfaces of said two insulating substrates so as not to overlap with each other in plan view. When this pressure-sensitive resistor is pressed, the contact resistances between the electrode patterns and the pressure-sensitive conductor is altered in accordance with the applied pressing force.
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Alps Electric Co. ,Ltd.
Clark Robin
Patel Harshad
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