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US 6,772,912 B1Granted
Liquid storage and dispensing tank
OwnerJames L. Schall, Steve J. Mertensinventors
Life of this patent
Estimating the term…
Abstract
A liquid storage and dispensing tank for use individually or for use in a stacked manner. The tank has an upper sump formed therein which collects the liquid in the tank when the tank has been turned upside down to completely drain liquid from the tank. The upper end of the tank has a pocket formed in a raised central portion thereof which receives a bottom sump of a tank stacked thereupon. The tank has a pair of forklift pockets formed in the bottom thereof which are accessible from the front of the tank. The tank also has conveniently accessible fill and drain openings. The tank is comprised of one-piece plastic and is formed by rotational molding or the like.
Claims28
A plastic container for storing and dispensing a liquid, comprising:
- a front wall, back wall, opposite side walls, a top and a bottom;
- a top sump extending upwardly from said top adjacent said back wall and having a selectively closable drain/fill opening formed therein;
- said bottom having an elongated bottom sump formed therein positioned between said front and back walls and which has forward and rearward ends;
- said elongated bottom sump being positioned approximately midway between said opposite side walls;
- said forward end of said bottom sump having a selectively closable drain opening formed therein;
- said top having a selectively closable fill opening formed therein adjacent one of said opposite side walls.
3 more elements
A liquid storage and dispensing system, comprising:
- a support stand having an upper end with support legs extending downwardly therefrom for engagement with a supporting surface;
- a first plastic tank positioned on said stand comprising:
- a front wall, back wall, opposite side walls, a top and a bottom;
- a top sump extending upwardly from said top adjacent said back wall and having a selectively closable drain/fill opening formed therein;
- said bottom having an elongated bottom sump formed therein positioned between said front and back walls and which has forward and rearward ends;
- said forward end of said bottom sump having a selectively closable drain opening formed therein;
- said top having a selectively closable fill opening formed therein adjacent one of said opposite side walls;
- said top wall having a pocket formed therein;
- a second plastic tank positioned on said first plastic tank comprising:
- a front wall, back wall, opposite side walls, a top and a bottom;
- a top sump extending upwardly from said top adjacent said back wall and having a selectively closable drain/fill opening formed therein;
- said bottom having an elongated bottom sump formed therein positioned between said front and back walls and which has forward and rearward ends;
- said forward end of said bottom sump having a selectively closable drain opening formed therein;
- said top having a selectively closable fill opening formed therein adjacent one of said opposite side walls;
- said bottom sump of said second tank being received in said pocket in said top wall of said first tank to prevent shifting of said second tank with respect to said first tank.
12 more elements
A liquid storage and dispensing system, comprising:
- a first plastic tank positioned on said stand comprising:
- a front wall, back wall, opposite side walls, a top and a bottom;
- a top sump extending upwardly from said top adjacent said back wall and having a selectively closable drain/fill opening formed therein;
- said bottom having an elongated bottom sump formed therein positioned between said front and back walls and which has forward and rearward ends;
- said forward end of said bottom sump having a selectively closable drain opening formed therein;
- said top having a selectively closable fill opening formed therein adjacent one of said opposite side walls;
- said top wall having a pocket formed therein;
- a second plastic tank positioned on said first plastic tank comprising:
- a front wall, back wall, opposite side walls, a top and a bottom;
- a top sump extending upwardly from said top adjacent said back wall and having a selectively closable drain/fill opening formed therein;
- said bottom having an elongated bottom sump formed therein positioned between said front and back walls and which has forward and rearward ends;
- said forward end of said bottom sump having a selectively closable drain opening formed therein;
- said top having a selectively closable fill opening formed therein adjacent one of said opposite side walls;
- said bottom sump of said second tank being received in said pocket in said top wall of said first tank to prevent shifting of said second tank with respect to said first tank.
11 more elements
A plastic container for storing and dispensing a liquid, comprising:
- a front wall, back wall, opposite side walls, a top and a bottom;
- a top sump extending upwardly from said top adjacent said back wall and having a selectively closable drain/fill opening formed therein;
- said bottom having an elongated bottom sump formed therein positioned between said front and back walls and which has forward and rearward ends;
- said forward end of said bottom sump having a selectively closable drain opening formed therein;
- said top having a selectively closable fill opening formed therein adjacent one of said opposite side walls;
- said rearward end of said bottom sump also having a selectively closable drain opening formed therein.
3 more elements
A plastic container for storing and dispensing a liquid, comprising:
- a front wall, back wall, opposite side walls, a top and a bottom;
- a top sump extending upwardly from said top adjacent said back wall and having a selectively closable drain/fill opening formed therein;
- said bottom having an elongated bottom sump formed therein positioned between said front and back walls and which has forward and rearward ends;
- said forward end of said bottom sump having a selectively closable drain opening formed therein;
- said top having a selectively closable fill opening formed therein adjacent one of said opposite side walls;
- said top wall having a pocket formed therein which receives the lower end of the bottom sump of a tank when a pair of tanks are stacked one upon the other.
3 more elements
Dependencies are inferred from the claim text.