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Piezoelectric energy generator

  • US 5,341,062 A
  • Filed: 02/01/1993
  • Issued: 08/23/1994
  • Est. Priority Date: 11/12/1991
  • Status: Expired due to Fees
First Claim
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1. A piezoelectric energy storage and generation device comprising:

  • (a) an elongated strip of piezoelectric polymer film having metalized first and second layers of opposite polarity on the respective opposite sides thereof;

    (b) said strip being pre-folded end to end to double thickness, thereby placing one end half of said first layer into mutually contacting relationship with the other end half of said first layer;

    (c) said pre-folded strip being pleated end to end in a zigzag pattern a plurality of times, with adjacent folds in said second layer being paired and placed in mutually contacting relationship; and

    (d) end plates at the respective opposite ends of said pre-folded and pleated strip, assembled therewith in stacked relationship, and electrically connected respectively to said first and second layers;

    wherein said metallized first and second layers are each patterned as a series of abutting circles extending longitudinally of said strip, overlying one another in said strip, and when said strip is pre-folded, pleated, stacked and assembled.

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