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. 13, 1981
Filed:
Dec. 22, 1977
Applicant:
Inventor:
Richard E Zachary, Clinton, LA (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55 36 ;
Abstract
A method for removing trapped gases such as air under a pond liner comprising partially filling the pond excavation under the liner with a liquid such as water thereby floating the liner on the liquid and collecting the trapped gases between the surface of the liquid and the liner, progressively filling the pond on top of the liner with another liquid such as water thereby forcing the trapped gases beneath the liner to the sides of the pond and venting the gases up the sides of the pond to the atmosphere, and draining away the liquid under the pond liner thereby settling the liner onto the bottom of the pond excavation.