US 6,227,396 B1 · Subterranean fluid containment tank

Abstract

A modular fluid storage tank, intended for underground storage of water, utilizing alternating circular and octagonal ribs in the main body and curved, ribbed, end caps. Interconnection of the tanks uses rigid pipe or semi-flexible hose. The coupling between the pipe and the tank incorporates a fitting, integrally molded into the tank, which extends into the interior of the tank, and a flexible sleeve which fits over, and is clamped to, the fitting and the pipe. The coupling is protected from the environment and is accessible from within the tank after installation for inspection and repair without the need to excavate the tank. The tank preferably has approximately equal length and diameter for improved strength. It is relatively small and lightweight, suitable for transport to and installation at a remote location without heavy equipment.

Claims3

Dependent claims

A fluid containment tank comprising:

(a) a cylindrical main body, having a longitudinal axis, comprising plural alternating outward and inward ribs, each of said outward ribs being substantially circular and lying in a plane substantially normal to said longitudinal axis and each of said inward ribs comprising plural interconnected straight sections, of substantially equal length, forming a closed polygon, and all of said sections in a plane substantially normal to said longitudinal axis;
(b) two arcuate end caps integrally formed with said main body thereby forming a substantially closed, fluid tight container;
and
(c) at least one fluid tight, integrally formed fitting adapted to subsequent modification for use as a fluid connection.

1 more element

Dependencies are inferred from the claim text.

Subterranean fluid containment tank

Life of this patent

Subterranean fluid containment tank

Life of this patent

Abstract

Claims3