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:
Oct. 27, 1992
Filed:
Apr. 10, 1991
Applicant:
Inventors:
Assignees:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 38 ;
Abstract
A ponded infiltrometer including a bubble chamber formed in a base that supports a liquid reservoir. A single valve interposed in a channel between the bubble chamber and the reservoir controls both air flow into the device and water flow out of the device. A selectively movable bubble tube communicates between the bubble chamber and the atmosphere, and the position of the lower end of the bubble tube precisely regulates the amount of ponded water in the containment ring which contacts a section of soil. The base and attached reservoir are supported and secured above the containment ring by an adjustable tripod.