Three-dimensional temperature probe
November 18, 2002. 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 2934756 3320808 3604252 3771355 Apparatus for measuring temperature Apparatus for measuring temperature of ultrasonic wave propagation medium Ultrasonic temperature measuring apparatus Method and means for measuring temperature using acoustical resonators Correlation thermography Ultrasonic measurement system using a perturbing field, multiple sense beams and receivers Patent #: 4431008 InventorsAssigneeApplicationNo. 06/442567 filed on 11/18/1982US Classes:600/438, Used as an indicator of another parameter (e.g., temperature, pressure, viscosity)374/119, Vibration velocity (e.g., echo timing)600/549, Temperature detection73/597Velocity or propagation time measurementExaminersPrimary: Cohen, Lee S.Assistant: Hanley, John C. Attorney, Agent or FirmInternational ClassesG01N 29/07 (20060101)A61N 7/00 (20060101) A61N 7/02 (20060101) G01N 29/22 (20060101) G01N 29/04 (20060101) G01N 29/32 (20060101) G01H 5/00 (20060101) G01K 11/00 (20060101) G01K 11/22 (20060101) A61F 7/00 (20060101) A61B 17/00 (20060101) AbstractTwo coaxial acoustic beams, one focused and the other unfocused, are used to measure changes in temperature within a localized region in a body. The focal region of the focused beam is located at the area to be measured. Changes in the relative phase angle between the two beams are indicative of changes in acoustic properties occurring at the focal region. Since the two beams have generally the same propagation path outside of the focal region, they will be similarly affected by acoustic variations which occur there, so there will not be any relative phase change between them due to such variations.Other References
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