Patent References 3806471 Data entry system Electric infinite-range load-sensing transducer Pressure-sensitive resistors Pressure sensitive resistor elements Pressure transducer Bounceless switch apparatus Force transducer Force transducer Patent #: 4493219 InventorApplicationNo. 06/937096 filed on 12/02/1986US Classes:73/862.043, Three dimensional (e.g., x, y, z axes)338/99, Surfaces pressed together (e.g., compressible type)73/862.68By measuring electrical propertiesExaminersPrimary: Ruehl, Charles A.International ClassesB60D 1/06 (20060101)B60D 1/00 (20060101) G01L 5/16 (20060101) G01L 1/20 (20060101) Foreign Application Priority Data1985-01-31 WOAbstractA device for sensing loads comprises rigid first and second members having opposed surfaces and a sensor subjected to compressive loading between the opposed surfaces. The sensor comprises an electrically conductive thin layer of material in conductive engagement with spaced apart conductors so as to provide an electrical path between the conductors through the conductive layer. The surface of the conductive layer is of undulating form whereby the conductive engagement will vary with variation in loading on the sensor.Other References
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