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:
Jul. 06, 1993
Filed:
Aug. 04, 1992
Applicant:
Inventors:
Edward B Cannan, Jr, Conroe, TX (US);
Joseph R Wiegand, Kern, CA (US);
David H Bartlow, Conroe, TX (US);
Assignee:
Owens-Corning Fiberglas Technology, Inc., Summit, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
220414 ; 220445 ; 220426 ;
Abstract
An underground storage tank comprises a cylindrical inner wall, a cylindrical outer wall of plastic resin and reinforcement fibers, and a layer of spacer filaments wound around the inner wall, the spacer filaments separating the inner and outer walls, and the spacer filaments being at least partially surrounded by voids to enable liquids to flow along the filaments.