Materials and apparatus for the detection of contraband

  • US 6,815,670 B2
  • Filed: 09/08/2003
  • Issued: 11/09/2004
  • Est. Priority Date: 10/06/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A detector apparatus comprising:

  • a detector for detecting trace amounts of particles of interest carried on a stream of air;

    two dryers in communication with the stream of air;

    at least one valve in communication with the dryers for selectively placing a first of the dryers in communication with the detector; and

    at least one heater for selectively recharging a second of the dryers while the first dryer is in communication with the detector.

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