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:
Jan. 17, 1978
Filed:
Sep. 20, 1976
Applicant:
Inventor:
Percy E Skaling, Santa Barbara, CA (US);
Assignee:
Soilmoisture Equipment Corporation, Santa Barbara, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 73 ;
Abstract
A portable tensiometer for measuring the moisture content of soil, including an elongated housing tube having a hollow porous tip mounted thereon for insertion in the soil, and a hollow handle element having a vacuum gauge secured to one end and a cylinder defining a chamber of adjustable volume at the other end. Capillary tubing, which connects the interior of the porous tip to the adjustable-volume chamber and to the vacuum gauge to form a sealed, normally water-filled system, and the use of a minimal volume of water in the instrument minimizes errors due to changes in temperature to which the instrument is subjected.