Piezoelectric sensor element with at least two single crystal elements
Patent 4667127 Issued on May 19, 1987. Estimated Expiration Date: 
June 10, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 10, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2988728 3281612 3281613 3349259 3521090 Multilayer electrostrictive element which withstands repeated application of pulses Patent #: 4523121 InventorsApplicationNo. 06/873158 filed on 06/10/1986US Classes:310/338, Force or pressure measuring type310/329, Including inertia type operator310/365, Electrode arrangement310/369Circular disc, ring, or cylinderExaminersPrimary: Budd, Mark O.Attorney, Agent or FirmInternational ClassesH01L 41/113 (20060101)H01L 41/083 (20060101) Foreign Application Priority Data1983-12-28 ATAbstractIndividual single crystal elements stacked one above the other are aligned with their optical (Z) axes parallel to each other, and are provided with contact electrodes on opposite surfaces normal to their electrical (X) axes. Contact electrodes of the same polarity are conductively connected by two bridge electrodes that are applied to opposite sides of the assembled stack of individual crystal elements in the form of a conductive coating, and are provided with a lead leaving the sensor element. Contact electrodes of the opposite polarity are recessed in the vicinity of the bridge electrode serve the other polarity. | |
