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Acoustic wave device

  • US 6,869,407 B2
  • Filed: 09/12/2001
  • Issued: 03/22/2005
  • Est. Priority Date: 09/12/2001
  • Status: Expired due to Fees
First Claim
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1. An acoustic wave device comprising:

  • an acoustic wave transducer comprising a non-cylindrical, non-ring shaped and non-flat support constructed of an electrically conducting material wherein said support has a truncated conical shape;

    a plurality of short coil segments electrically connected in parallel wound about said support, wherein an electrical current passing through said short coil segments induces an induced current in said truncated conical support, said induced current generating an electromagnetic force that repel said short coil segments outwards from said support; and

    a membrane shaped to conform to the outer contour of said truncated conical support and said plurality of short coil segments, wherein said plurality of short coil segments are adapted to move said membrane outwards from said truncated conical support.

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