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Gage

  • US 4,142,401 A
  • Filed: 10/03/1977
  • Issued: 03/06/1979
  • Est. Priority Date: 10/03/1977
  • Status: Expired due to Term
First Claim
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1. A gage for measuring the width of a gap, said gage comprising:

  • a gaging conduit having an inlet and an outlet;

    pressure means supplying gas under pressure to the inlet of the gaging conduit, said pressure means maintaining the gas pressure at such a value that gas flow through the gaging conduit is in the non-compressible aerodynamic regime, said gaging conduit exhausting gas to a region of lower pressure;

    a hot-wire anemometer in the gaging conduit; and

    means responsive to the condition of the anemometer conduit to measure the size of the gap between the outlet of the gaging conduit and a surface as a function of gas flow rate in the gaging conduit.

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