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Portal vapor detection system

  • US 4,964,309 A
  • Filed: 02/16/1989
  • Issued: 10/23/1990
  • Est. Priority Date: 02/16/1989
  • Status: Expired due to Fees
First Claim
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1. A vapor sampling system for sampling vapor proximal to a body of a subject, the system comprising:

  • a vapor analyzer to determine the components of a sample of gas;

    a moveable panel positioned in a doorway. the panel supporting a sampling tube with inlet ports through which vapor samples are drawn, the sampling tube transporting a gas flow from the inlet ports to the vapor analyzer, and the inlet ports drawing the gas flow from a region proximal to the body of the subject as the panel is displaced by the body of the subject passing through the doorway.

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