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Acoustic vapor type indicator

  • US 5,170,634 A
  • Filed: 06/11/1991
  • Issued: 12/15/1992
  • Est. Priority Date: 06/11/1991
  • Status: Expired due to Fees
First Claim
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1. An acoustic vapor type indicator for use in controlled venting of separated gases from a closed vessel containing a quantity of a separate heavier vapor comprising:

  • a vapor flow conduit connectable at one end to said closed vessel;

    an air chamber connectable to an opposite end of said vapor flow conduit;

    an outlet orifice connected to said air chamber; and

    a hollow echo chamber having an opening positioned adjacent said orifice so that vapor flow through said orifice crosses said opening producing a whistle sound.

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