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US 8,418,718 B2Granted
Double walled tanks with internal containment chambers
AssigneeEnviro Vault Inc.
InventorRuss Hebblethwaite
Life of this patent
Estimating the term…
Abstract
A double-walled above-ground storage tank includes a primary tank and a secondary tank, and an interstitial space; an containment chamber formed by a primary chamber wall and a secondary chamber wall, forming a chamber interstitial space therebetween, and an exterior door assembly; and at least one pipe and valve assembly wherein the pipe originates in the tank interior volume and the valve is disposed within the chamber.
Claims13
An above-ground storage tank comprising:
- (a) a tank roof, a tank floor, a primary tank and a secondary tank, which together define a tank interstitial space therebetween;
- (b) a containment chamber formed by a primary chamber wall and a secondary chamber wall, which together define a chamber interstitial space therebetween, and an exterior door assembly;
- (c) wherein the primary tank, the primary chamber wall and the tank floor together define a tank interior volume
- (c) at least one pipe and valve assembly wherein the pipe originates in the tank interior volume and the valve is disposed within the chamber;
- (d) wherein the at least one pipe and valve assembly does not pass through the primary tank or the primary chamber wall in a non-freeboard zone.
2 more elements
Dependencies are inferred from the claim text.