Gas Spring and Overpressure Relief and Fill Valve Assembly
AssigneeDADCO, Inc.
InventorJames W. Moss
Life of this patent
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Abstract
A gas spring includes a fill valve, and a rupture disc carried by the fill valve. An overpressure relief and fill valve assembly includes a valve housing with a valve passage, the fill valve carried by the valve housing and including a valve stem extending into the valve passage and an overpressure relief passage extending through the fill valve, and a rupture disc carried by the fill valve in communication with the overpressure relief passage. A gas spring may include the valve assembly therein.
Claims21
A gas spring for forming equipment, comprising:
- a casing including an axially extending side wall, an open end, a transversely extending closed end wall axially spaced from the open end, a pressure chamber established in part by the side and end walls to receive a gas under pressure;
- a piston rod housing received at least in part in the casing;
- a piston rod received at least in part in the casing and extending through the piston rod housing and the casing for reciprocation between extended and retracted positions;
- and
- a fill valve in fluid communication with the pressure chamber and extending along a valve axis;
- and
- a rupture disc in fluid communication with the pressure chamber and carried by the fill valve.
An overpressure relief and fill valve assembly, comprising:
- a valve housing including:
- a first open end,
- a second open end, and
- a valve passage between the open ends;
- and
- a fill valve carried by the valve housing and including:
- a valve stem extending into the second open end of the valve housing and into the valve passage of the valve housing,
- an overpressure relief passage extending through the fill valve, and
- a rupture disc carried by the fill valve in communication with the overpressure relief passage.
The valve assembly of claim 14, wherein the enlarged portion includes an annular retainer carried in an annular groove of the fill valve.
Dependencies are inferred from the claim text.