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Inflatable fluid conduit plug

  • US 8,353,308 B2
  • Filed: 06/30/2008
  • Issued: 01/15/2013
  • Est. Priority Date: 07/26/2007
  • Status: Expired due to Fees
First Claim
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1. A conduit plug comprising:

  • a shroud having an opening for sealed insertion into a conduit having an inner wall;

    an inflatable bladder disposed within said shroud for closing said shroud opening upon an inflation signal;

    bladder inflation means integral to the plug and in fluid communication with said bladder;

    contaminant detectors for generating a contaminant signal; and

    a controller for receiving said contaminant signal and transmitting said inflation signal,wherein the bladder is fabricated from a suitable chemically resistant material,wherein the bladder is disposed axially within the shroud, andwherein the bladder has a top and a bottom and wherein the bladder is fixed axially within the shroud at said bladder top and at said bladder bottom by a plurality of bracing rods extending from said shroud top inner surface and said shroud bottom inner surface,wherein the bladder is connected to said inflation means by a threaded connection, and wherein the bladder comprises;

    an accelerometer for detecting inflation speed; and

    an alarm for alerting an operator when said inflation speed is sub-optimum.

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