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:
Jun. 06, 1995
Filed:
Mar. 23, 1994
Applicant:
Inventors:
Mark D Ankeny, Albuquerque, NM (US);
Mark E Burkhard, Albuquerque, NM (US);
Assignee:
Daniel B. Stephens & Associates, Inc., Albuquerque, NM (US);
Primary Examiner:
Int. Cl.
CPC ...
B09B / ;
U.S. Cl.
CPC ...
405128 ; 405129 ; 405 52 ; 588250 ;
Abstract
A method and apparatus for hydraulically isolating a volume in porous unsaturated material, such as soil. Air is forced through a permeable layer of material adjacent to the volume to be hydraulically isolated. The air flow through the permeable layer creates a water potential gradient. This causes water to migrate from more saturated areas which in turn would allow hydraulic isolation of any unsaturated area.