U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Solid state heat to electricity converter

Patent 4733121 Issued on March 22, 1988. Estimated Expiration Date: Icon_subject October 14, 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

3198969

3234413

3246287

3255401

3822388

Inventor

Application

No. 06/918071 filed on 10/14/1986

US Classes:

310/311, Piezoelectric elements and devices310/26, Magnetostrictive310/328, With mechanical energy coupling means310/331, Plural elements310/339, Voltage, spark or current generator310/369Circular disc, ring, or cylinder

Examiners

Primary: Budd, Mark O.

International Class

H01L 41/113 (20060101)

Abstract

The conversion of heat energy to electrical energy is realized by coupling memory materials to piezoelectric materials or to composite magnetoelectric materials and by subsequent hot-cold-strain cycling of the memory material. Embodiments of the invention provide solid state inverters, particle acceleration and focusing devices, and automatic hot-cold-strain cycling motor, and high voltage heat to electricity converters.

Other References

  • Pyroelectric Conversion Cycle of Vinylidene Floride Trifluoroethylene Copolymer, by Olsen et al. JAP 57(11) Jun. 1, 1985, pp. 5036
  • 55-Nitinol-The Alloy with a Memory: Its Physical Metallurgy, Properties, and Applications, a report by C. M. Jackson, NASA, 1972, NASA-SP 5110
  • Composite Electroceramics by R. E. Newham, Ferroelectrics, vol. 68, 1986, pp. 22-25
  • Composite Piezoelectric Transducers, R. E. Newnham et al., Materials Research Laboratory Penn State University, U.S.A. 16802, (undated)
  • High Electric Field Resistivity & Piezoelectric Properties of Vinylidene Fluoride Trifluoroethylene Copolymer by Olsen et al., JAP, 58(8), Oct. 15, 1985, p. 2854
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