Abstract: An expansion mechanism for use in a meter box or a meter yoke. The mechanism composed of two principal elements includes a body having an at least partially threaded axial body opening passing therethrough and a bushing having a nut with a threaded female portion into which the meter threads and a threaded male portion adapted to thread into the threaded body opening. A cup having a cup opening passing therethrough is secured to an annular rim on the interior of the body and is provided with a tubular surface axially aligned with the bushing and body. The cup is provided with a sleeve having an O-ring sealer that continuously provides a seal between the tubular surface and the bushing so that the seal is maintained in any relative axial position between the body and the bushing.

Abstract: An expansion mechanism for a meter box or a meter yoke. The mechanism includes a body having an at least partially threaded axial body opening passing therethrough. The body has four spaced spokes extending generally radially out therefrom in the form of a cross. The body has first and second diametrically opposed positioning prongs and a third positioning prong disposed generally midway between them. The three prongs each have inwardly-disposed lips at their outer ends. A bushing having a nut with a threaded female portion into which the meter threads and having a threaded male portion adapted to thread into the threaded body opening is provided. The bushing includes a sleeve adapted to pass through and partially out of the body opening when the threaded male portion is threaded into the threaded body opening. A cup having a cup opening passing therethrough and an outwardly flaring annular cup lip at one end thereof is also provided.

Abstract: An expansion mechanism for a meter box or a meter yoke. The mechanism includes a body having an at least partially threaded axial body opening passing therethrough. The body has four spaced spokes extending generally radially out therefrom in the form of a cross. The body has first and second diametrically opposed positioning prongs and a third positioning prong disposed generally midway between them. The three prongs each have inwardly-disposed lips at their outer ends. A bushing having a nut with a threaded female portion into which the meter threads and having a threaded male portion adapted to thread into the threaded body opening is provided. The bushing includes a sleeve adapted to pass through and partially out of the body opening when the threaded male portion is threaded into the threaded body opening. A cup having a cup opening passing therethrough and an outwardly flaring annular cup lip at one end thereof is also provided.

Abstract: A meter box including a bottom tray having a floor, side walls, a collar releasably connected to the top of said tray, and a lid releasably connected to the top of the collar. All of the parts fit together and are releasably secured in this position without the need for nuts and bolts or the like. Also, except for removal of the lid, the parts may be connected and disconnected without the need for tools. The inlet valve is also releasably secured in place and may be assembled and disassembled from the remainder of the meter box without the use of tools.

Abstract: A meter box including a bottom dish having a floor, side walls, an inlet valve at one end and an outlet valve at another end passing through the sidewall. The inlet and outlet valves are integrally formed as one rigid piece with the floor and the side walls and constructed so that they are in precise alignment with each other so that a fluid meter and expansion mechanism can be installed therebetween. An upwardly extending collar is connected to the dish and a lid is secured to the upper end of the collar. A snap-fast connection releasably connects the collar to the dish and is formed as part of the collar and the dish. The inlet and outlet valves have connecting mechanisms at their outer external ends for connecting the meter box to external pipings.