Boots – shoes – and leggings
Patent
1986-01-22
1989-03-28
Gruber, Felix D.
Boots, shoes, and leggings
2503591, 324 61QS, 324 61QL, 324 65R, 364563, 378 54, G01N 2722, G01N 23203, G01B 1502
Patent
active
048170216
ABSTRACT:
Apparatus and methods for producing a signal or signals related to the moisture content of a substance using impedance, radio frequency loss or dielectric loss techniques are disclosed. Apparatus and methods for producing a signal or signals related to the density and/or thickness of a substance using backscattered gamma-rays are described. Apparatus and methods using a combination of a.c. impedance, radio frequency or dielectric loss and backscattered gamma-ray techniques for producing signals related to the moisture content, density and/or thickness of a substance are also described. Means and methods for determining the moisture content, density and/or thickness of the substance from the signal or signals are disclosed. The apparatus and methods are particularly applicable to determining the moisture content, density and/or thickness of coal and coke.
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Cutmore Nicholas G.
Sowerby Brian D.
Commonwealth Scientific and Industrial Research Organisation
Gruber Felix D.
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