The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 1981
Filed:
Dec. 26, 1978
Applicant:
Inventor:
Siegfried O Auer, Bowie, MD (US);
Assignee:
Norlin Industries, Inc., Deerfield, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ; G01N / ;
U.S. Cl.
CPC ...
356419 ; 250255 ; 250339 ; 356 51 ;
Abstract
An apparatus for measuring the moisture content of a soil sample at selected depths is disclosed. Light is conducted from a source via a fiber optical cable to a soil probe which is inserted at selected depths into a bore hole formed in the soil sample. Light from the source and reflected light from the soil sample is conducted via fiber optic cables to a reflectometer, which determines reflection factors of the soil sample at three selected infrared wavelengths of a water absorption band. Means are provided to compute the moisture content of the sample at the selected depths from the measured reflectance factors.