Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
High damage threshold frequency conversion system
Automatically selecting a paper with increased dimensions than originally desired for printing and adding advertisement content to the increased dimensional area of the paper
Semiconductor device and fabrication method
Device and method for quantizing and inverse quantizing LPC filters in a super-frame
Light emitting element, method for manufacturing the light emitting element, optical element and method for manufacturing the optical element
Integrating multimedia capabilities with circuit-switched calls
Fuel-based injection control
  Randomly Featured Patents
Formliner for decorative wall
Yarn false twisting apparatus
Pressure sensor
Catalyst for oxidation of carbon monoxide and hydrocarbons in combustion engine exhaust gas
Spectral sensitizing dyes for photothermographic elements
Adaptive MIDI wind controller device
Hinge mountable rack
Excitation stage of a transmission tube for short-wave transmitter
Coating fibers with a layer of silicon
Method and apparatus for controlling classification and classification switching in a vision system