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:
Dec. 17, 1991
Filed:
Jun. 25, 1991
Applicant:
Inventor:
John A Hendershot, Shawnee, OK (US);
Assignee:
World Enviro Systems, Inc., Shawnee, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73 492 ; 220403 ; 220425 ; 220469 ;
Abstract
A triple-walled fluid containment system which includes a rigid metallic outside tank, an outer flexible bladder positioned within the rigid outside tank and a plurality of suspension elements between the tank and the outer bladder for suspending the flexible outer bladder within, and adjacent, the tank. An inner flexible bladder of complementary configuration to the outer bladder is located within, and adjacent, the outer bladder. A vacuum monitoring system communicates with the interstice between the outside and the inside bladder for evacuating the space therebetween.