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Soil gas reduction system

  • US 4,988,237 A
  • Filed: 09/29/1989
  • Issued: 01/29/1991
  • Est. Priority Date: 09/29/1989
  • Status: Expired due to Fees
First Claim
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1. A system for extracting gas emanating from soil at a subterranean cavity adjacent a floor slab and venting the gas to the atmosphere comprising:

  • a vacuum pump for pumping the gas to the atmosphere, having a pump motor, a pump inlet port and a pump outlet port;

    a vacuum tight housing defining a housing chamber for housing the vacuum pump and having a housing outlet port and a housing inlet port and wherein the pump outlet port is coupled to the housing outlet port and the pump inlet port is coupled to the housing chamber;

    a fluid vacuum conduit extending within said subterranean cavity for providing fluid communication between the cavity and the housing inlet port of the housing for coupling the gas to the housing to circulate gas over the motor;

    a vent coupled to the housing outlet port for providing fluid communication between the pump outlet and the atmosphere.

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