Sensor for non-invasive measurement of sound, pressure and vibration on the human body
Patent 5035247 Issued on July 30, 1991. Estimated Expiration Date: 
December 29, 2008. 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.
December 29, 2008. 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 3233041 3387149 3921623 Method and apparatus for discrimination and detection of heart sounds Bio-acoustic signal sensing device Patent #: 4947859 InventorApplicationNo. 291513 filed on 12/29/1988US Classes:600/528, Detecting heart sound600/514, Sound generated by successive heartbeat electric signals to represent heart action600/586Detecting sound generated within bodyExaminersPrimary: Jaworski, Francis J.Assistant: Manuel, George Attorney, Agent or FirmInternational ClassA61B 005/02Foreign Application Priority Data1987-12-31 DEAbstractThe invention relates to a sensor (1) for non-invasive measurement of sound, pressure and vibration on the human body which features a transducer in the form of a transducer membrane (23) to achieve a very good response characteristic coupled with low weight and small size. The transducer diaphragm (23) is preferably configured as a piezoelectric foil which converts the mechanical input variables into electrical signals which can be processed by means of processor units. | |
