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
Method and apparatus for charging a power pack of a portable electronic device
Crystalline form of (R)-7-chloro-N-(quinuclidin-3-yl)benzo[b]thiophene-2-carboxamide hydrochloride monohydrate
Plural component proportioner
Method of interfacing a host operating through a logical address space with a direct file storage medium
Maesa japonica extracts and methods of use
Tie down strap hook
Methods and devices for enforcing network access control utilizing secure packet tagging
  Randomly Featured Patents
Method for producing a PCD compact
One-size-fits-most hearing aid
Reactive power compensator with capacitor and capacitor discharge circuit
Air motor systems for small boats
Apparatus and method for storing ammunition clip
Hydraulic brake system for two-wheeled vehicles
Force-controlled resistance welding device
Specifying associations among attributes of entities in
Low voltage detecting circuit for detecting input power of a modem
Method for noninvasive monitoring and control of blood pressure