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Sonic signalling transducer

  • US 4,051,714 A
  • Filed: 07/12/1976
  • Issued: 10/04/1977
  • Est. Priority Date: 07/12/1976
  • Status: Expired due to Term
First Claim
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1. A method of locating and recording at remote stations the location of a leak in a pipeline through which a stream of pressurized fluid flows, consisting of the steps ofa. Inserting a ferret including a cylinder and a piston, each of which is provided with a member substantially obstructing fluid flow therepast, said members being spaced axially of the pipe,b. And employing pressure change in the ferret resulting from fluid flow through a pipeline leak aperture to effect release of pressurized gas and resultant propulsion of the piston within the cylinder for generation of sonic waves through the pipeline fluid in both upstream and downstream directions.

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