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Radon removal apparatus

  • US 4,885,984 A
  • Filed: 09/19/1988
  • Issued: 12/12/1989
  • Est. Priority Date: 09/19/1988
  • Status: Expired due to Fees
First Claim
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1. A gas venting system for a building including a basement, a basement floor and a side wall comprisinga single continuous pipe having one end disposed beneath the basement floor and the other end extending through the side wall of the building,a fan coupled to the outer wall of the side wall of the building,said pipe being secured to said fan,a pipe extending from said fan vertically to draw gas pulled by the fan away from the building, anda low voltage D.C. motor coupled to and driving said fan and including a current limiter, the speed of operation of said motor varying with the load on said motor, with the speed increasing as the load increases.

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