Portable Liquid Storage Tank

Abstract

A collapsible portable tank for storing liquids has a liquid impervious liner. The side walls of the liner are supported by a collapsible frame. A plurality of hand grips in a zigzag pattern on the floor panel of the liner facilitates manipulation of the liner to collapse the liner with the frame. The liner floor panel is of heavier material than the side walls and is heat sealed along its entire perimeter to the liner side walls, affording a more durable floor while eliminating clumsy excess liner material at the corners of the tank. Another hand grip on the floor panel opposite a drain in the liner side walls facilitates evacuation of stored liquid from the tank prior to collapsing the tank.

What is claimed is: 
     
         1 . A portable tank for storing liquids comprising:
 a collapsible frame;   a liner of material impervious to the liquid to be stored having side walls supported by said frame and a floor panel; and   a plurality of hand grips on a top surface of said floor panel for manipulating said liner to collapse with said frame.   
     
     
         2 . A portable tank according to  claim 1 , said frame having hinges at corners and approximate mid-points of two opposite sides thereof allowing said frame to be collapsed. 
     
     
         3 . A portable tank according to  claim 2 , said hand grips being arranged in a zigzag pattern in relation to a vertical plane extending through said opposite side hinges. 
     
     
         4 . A portable tank according to  claim 3 , first hand grips on each side of said floor panel being on opposite sides of said plane. 
     
     
         5 . A portable tank according to  claim 1 , said floor panel being of heavier material than said liner side walls. 
     
     
         6 . A portable tank according to  claim 5 , said floor panel being heat sealed along an entire perimeter thereof to said side walls. 
     
     
         7 . A portable tank according to  claim 1  further comprising a drain in one of said liner side walls along an unhinged side of said frame. 
     
     
         8 . A portable tank according to  claim 7  further comprising another hand grip on said top surface of said floor panel proximate a center of a side of said liner opposite said drain. 
     
     
         9 . A portable tank for storing liquids comprising:
 a collapsible frame; and   a liner of material impervious to the liquid to be stored having side walls supported by said frame and a floor panel, said material of said floor panel being heavier than material of said side walls.   
     
     
         10 . A portable tank according to  claim 9 , said floor panel being heat sealed along an entire perimeter thereof to said side walls. 
     
     
         11 . A portable tank for storing liquids comprising:
 a collapsible frame;   a liner of material impervious to the liquid to be stored having side walls supported by said frame and a floor panel,   a drain in one of said liner side walls; and   a hand grip on a top surface of said floor panel proximate a perimeter thereof opposite said drain.