US 4,874,105 A · Valve box

Abstract

A valve box for use with a water valve from an aqueduct branch pipe. The valve box comprises a pair of endwisely connected elongated coaxial cylinders, a cover removably mounted to the top of the upper cylinder and having a downturned cylindrical flange depending therefrom within the main cylinders, and a floor wall having an upturned cylindrical flange exteriorly of the main cylinders. Cross-sectionally V-shape, elastomeric, annular, self-tightening gaskets ensure liquid-tight interconnection of the two main cylinders, of the upper cylinder with the upper flange and of the lower cylinder with the lower flange. The rotatable shaft of the valve extends through the floor wall, wherein the cross-sectionally square head thereof can be accessed from ground level by removing the cover. The two flanges are moreover releasably locked to the cylinders by bayonet joints.

Claims16

Dependent claims

A valve box for use with a water valve from an aqueduct branch pipe or the like, comprising:

an upright, ground-engaging, elongated, tubular assembly, a cover member mounted to the top of said tubular assembly, first locking means to releasably lock said cover member to said tubular assembly, first gasket means to seal the connection of said cover member to said tubular assembly cooperatively with said first locking means, a floor member mounted to the bottom of said tubular assembly, second locking means to releasably lock said floor member to said tubular assembly, second gasket means to seal the connection of said floor member to said tubular assembly;
said floor member having a through-bore for rotatably receiving an operative shaft of said valve, said shaft having gripping means at its free end adapted to project within said tubular assembly;
and third gasket means, to seal the connection between said shaft and said floor member.

Dependencies are inferred from the claim text.

Valve box

Life of this patent

Valve box

Life of this patent

Abstract

Claims16