Piezo electric apparatus for generating electricity
Patent 4442372 Issued on April 10, 1984. Estimated Expiration Date: 
November 22, 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.
November 22, 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 2522389 3122015 3239678 3665226 3822388 Piezoelectric fluid-electric generator Patent #: 4387318 InventorAssigneeApplicationNo. 06/443229 filed on 11/22/1982US Classes:310/339, Voltage, spark or current generator310/321, Combined with resonant structure310/328, With mechanical energy coupling means310/338, Force or pressure measuring type310/800PIEZOELECTRIC POLYMERS (E.G., MYLAR, PVDF)ExaminersPrimary: Budd, Mark O.Attorney, Agent or FirmInternational ClassH01L 41/113 (20060101)AbstractA variable pressure piezo electric generator comprised of a furnace chamber, a refrigerant chamber surrounding the furnace chamber in heat exchange relation thereto and a condensing chamber in communication with the refrigerant chamber. The refrigerant chamber contains a liquid refrigerant that is vaporized by the furnace heat and flows into and through the condensing chamber where it condenses. Piezo electric elements are mounted in the condensing chamber in the path of the pressurized refrigerant. An apertured plate is mounted in the condensing chamber between adjacent pairs of the piezo electric elements. The apertures in the respective plates vary in size which causes refrigerant pressure variations. As a result, the refrigerant exerts mechanical forces on the piezo electric elements causing them to produce electricity. | |
