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Gap measurement device

  • US 5,760,593 A
  • Filed: 02/14/1996
  • Issued: 06/02/1998
  • Est. Priority Date: 02/14/1996
  • Status: Expired due to Term
First Claim
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1. A device for capacitively measuring the distance between a turbine blade in a turbine and another part of the turbine which comprisesan electrode that will couple capacitively with the turbine blade, said electrode having a part which faces the turbine blade,a deposited electrically conductive layer on said part which faces the turbine blade,a shield that surrounds the electrode except where the electrically conductive layer is located,a deposited ceramic coating of insulation between said electrode and said shield such that said shield is electrically isolated from the electrode by means of said insulation, anda deposited ceramic layer of insulation that surrounds the shield.

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