Flexible tanks

Abstract

Flexible tanks for storage of fluids are constructed of interconnected panels of flexible material made of flexible woven and coated materials and with specific geometric panel configurations.

What is claimed is: 
     
         1 . A flexible tank comprising:
 A plurality of interconnected panels, each panel bonded to adjoining panels to define a tank cavity;   a left side pocket formed by one or more panels;   a right side pocket formed by one or more panels;   an middle section formed by one or more panels; and   the left side pocket, right side pocket and optional middle sections being assembled in a manner to maximize the tank base and maintain a low fill height with low stretch of the panels.   
     
     
         2 . The tank of  claim 1  further comprising:
 five panels where four of the panels are rectangular and have two rounded adjacent corners, two of the four panels are bonded to form the left side pocket and two of the four panels are bonded to form the right side pocket; and 
 one of the four panels is the middle section which is a rectangle and is bonded to the left side pocket and the right side pocket and to itself. 
 
     
     
         3 . A flexible multi panel trapezoidal design storage tank comprising:
 four or more panels, each panel bonded by seams with others of the panels to enclose a storage volume;   a large rectangular panel formed by one or more panels;   a small rectangular panel formed by one or more panels;   two or more side panels; and   the large rectangle, small rectangle and two or more side panels being assembled in a manner to maximize the base corners contact with the surface below and have low stretch on the small rectangle.   
     
     
         4 . The multi panel trapezoidal design storage tank of  claim 3  further comprising:
 ten panels where four of the panels are side panel trapezoids and six of the panels are rectangles; and 
 three of the rectangle panels are bonded to one another to form the large rectangle, three of the rectangle panels are bonded to one another to form the small rectangle, the long parallel edges of the side trapezoids bonded to the larger rectangle and the short parallel edges of the side trapezoids bonded to the small rectangle and the non-parallel edges of the side trapezoids bonded to one another.