Stannous oxide force transducer and composition
First Claim
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1. A transducer having a resistance which varies in response to the amount of applied force comprising:
- a base ply;
a resistance ply disposed on the base ply, the resistance ply comprising;
a continuous matrix conductive resin; and
a stannous oxide particulate interspersed in the continuous matrix of conductive resin to form a surface with a plurality of microprotrusions formed by the stannous oxide particulate;
at least two spaced apart conductors electrically interconnected across the resistance ply to enable electrical conduction through the resistance ply, at least one of the conductors juxtaposed opposite the surface of the resistance ply for being pressed thereagainst, the resistance to electrical current conducting through the resistance ply varying in response to the amount of force applied to press the at least one conductor against the surface of the resistance ply.
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Abstract
A pressure transducer includes a base ply, a resistance ply disposed on the base ply and at least two spaced apart conductors juxtaposed in relation to the resistance ply whereby at least one of the conductors may be pressed against the resistance ply. The resistance ply is made by spraying or silk screening a mixture of a continuous matrix conductive resin and a stannous oxide particulate and then curing the composition to form a solid resistance ply having a surface with a multiplicity of micro-protrusions formed by the stannous oxide particulate.
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Citations
23 Claims
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1. A transducer having a resistance which varies in response to the amount of applied force comprising:
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a base ply; a resistance ply disposed on the base ply, the resistance ply comprising; a continuous matrix conductive resin; and a stannous oxide particulate interspersed in the continuous matrix of conductive resin to form a surface with a plurality of microprotrusions formed by the stannous oxide particulate; at least two spaced apart conductors electrically interconnected across the resistance ply to enable electrical conduction through the resistance ply, at least one of the conductors juxtaposed opposite the surface of the resistance ply for being pressed thereagainst, the resistance to electrical current conducting through the resistance ply varying in response to the amount of force applied to press the at least one conductor against the surface of the resistance ply. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A composition of matter for being disposed in a thin layer for forming a resistance ply juxtaposed between at least two conductors, the thin layer defining a surface against which at least one of the conductors may be pressed, the resistance ply having a resistance which varies in response to the amount of force with which the at least one conductor is pressed against the surface of the resistance ply, the composition of matter comprising:
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a conductive resin; and stannous oxide particulate interspersed through the conductive resin. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A transducer having a resistance which varies in response to the amount of applied force comprising:
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a first base ply; a first conductor disposed on the first base ply; a second base ply in facing relationship to the first base ply; a second conductor disposed on the second base ply; a first resistance ply disposed on the first conductor and a second resistance ply disposed on the second conductor and the first and second resistance plies comprising; a continuous matrix conductive resin; and a stannous oxide particulate interspersed in the continuous matrix of conductive resin to form a surface with a plurality of microprotrusions formed by the stannous oxide particulate; the two conductors to enable electrical conduction through the first and second resistance plies, the first and second resistance plies juxtaposed opposite each other for being pressed together, the resistance to electrical current conducting through the first and second plies varying in response to the amount of force applied to press the surfaces of the first and second resistance plies together.
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Specification