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Gyroscopic Steering Tool Using Only a Two-Axis Rate Gyroscope and Deriving the Missing Third Axis

  • US 20070175055A1
  • Filed: 04/12/2007
  • Published: 08/02/2007
  • Est. Priority Date: 08/07/2003
  • Status: Active Grant
First Claim
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1. A method of using a two-axis gyroscope on a housing for determining a rate of rotation of said housing about a third axis, said two axes of the two-axis gyroscope being substantially orthogonal to each other, wherein said third axis has a small deviation from orthogonality relative to at least one of said two axes.

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