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Rotation rate sensor with closed ended tuning fork

  • US 5,585,561 A
  • Filed: 08/11/1994
  • Issued: 12/17/1996
  • Est. Priority Date: 08/11/1994
  • Status: Expired due to Fees
First Claim
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1. A closed-ended tuning fork comprising:

  • a pair of unframed tines;

    a drive end base joined to a drive end of each of the tines; and

    a pickup end base joined to a pickup end of each of the tines;

    drive end and pickup end suspension systems respectively joined to the drive end and pickup end bases for mounting the tuning fork to an external structure, each of the drive end and pickup end suspension systems including means for reducing temperature related strain on the tuning fork and a bridge joined to a corresponding one of the drive end and pickup end bases and to the strain reducing means;

    the tines, the drive end and pickup end bases, and the drive end and pickup end suspension systems all being formed from a single crystal piezoelectric material.

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