Resources Contact Us Home
Method and apparatus for detection of volatile soil contaminants in situ

Image Number 4 for United States Patent #4834194.

The invention relates to methods and apparatus for agitating and heating a sub-surface volume of soil to liberate volatile compositions therefrom which are transmitted through a special flow passage created through the soil to the soil surface where they are analysed to determine the presence or absence of selected contaminants. A low pressure sink is provided to ensure proper flow of volatiles rapidly to the surface and to prevent contamination of adjacent soil blocks or cylinders during treatment.

  Recently Added Patents
Pull through coronary sinus pacing lead
Power converter for an LED assembly and lighting application
Method of and apparatus for recording motion picture, which generate encoded data with higher compression efficiency using a motion vector similarity
Reflective mask blank and method of manufacturing a reflective mask
Group of amino substituted benzoyl derivatives and their preparation and their use
Multi-carrier operation for wireless systems
  Randomly Featured Patents
Housing for suspendable assembly
Method for fabricating molded resinous part with metal distributed in surface thereof
Culture of totipotent embryonic inner cells mass cells and production of bovine animals
Process for producing an imaging member belt having an angular seam
Porous metal denuder
Masterless building block binding to partitions
Interactive transaction center interface
Apparatus and method for cycle accounting in microprocessors
System and method of treatment for insomnia and occasional sleeplessness
Arrangement for recording clock run-in codewords at the beginning of a track on a magnetic record carrier