High temperature ultrasonic transducer device
Patent 5332943 Issued on July 26, 1994. Estimated Expiration Date: 
October 21, 2013. 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.
October 21, 2013. 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 3387604 3663842 3781576 3921442 Ultrasonic beam focusing device with a concave surface Temperature independent ultrasound transducer device Split flowtube for molten metal magnetic flowmeter Ultrasonic transducers for high temperature applications Ultrasonic probe and method for operating the same Ultrasonic transducer for extreme temperature environments InventorApplicationNo. 140270 filed on 10/21/1993US Classes:310/326, Combined with damping structure73/644, Having significant coupling means310/327, On back of piezoelectric element310/336Nondestructive testing typeExaminersPrimary: Dougherty, Thomas M.Attorney, Agent or FirmInternational ClassH04R 017/00AbstractA hard faced contact ultrasound transducer device for transmitting ultrasound pulses into a workstructure at temperatures substantially above room temperature comprises a ceramic protection block, a piezoelectric element bonded to the protecting block, a damping substrate adjacent the piezoelectric element, a ceramic clamping block with standoff portions that limit the approach of the clamping block toward the ceramic protecting block, and fasteners to draw the clamping block toward the protecting block forcing the damping substrate against the piezoelectric element and the protecting block. | |
