Gas cylinder regulator
AssigneeTescom Corporation
InventorMary Schwartz
Life of this patent
Estimating the term…
Abstract
The pressure regulator is threadable onto the neck of a tank of gas under pressure that has a plug mounted in the neck and a rupturable disk blocking fluid flow through a plug bore. The main body includes a central reduced diameter portion extendable into the plug bore without rupturing the disk when the regulator is threaded to the neck, but when further threaded, ruptures the disk. The combination of the main body and a cap have a bore extending therethrough which opens to the tank interior when the disk is ruptured and to the regulator outlet. A piston is mounted in the body and cap bore that blocks fluid flow through the last mentioned bore when the pressure at the outlet is at or above a preselected level but permits flow therethrough when the outlet pressure is below the preselected level.
Claims16
A pressure reducing regulator that has a central axis and is threadable to a cylinder neck portion which has a top annular edge, comprising a main body having a lower annular chamber that at least in part is defined by a top annular wall, a radial outer annular portion extending axially below the annular wall, surrounding the top annular wall and being internally threaded and a radial centered reduced diameter portion extending to a lower elevation than the annular portion, and a main body top portion;
- the main body having a bore extending axially therethrough, including through the body reduced diameter portion and through the main body top portion, the main body bore having a top bore portion and a lower bore portion having a part providing an inlet and a part of a smaller diameter than the top bore portion and opening thereto to provide a valve seat, a cap having an outlet and connected to the main body top portion to in conjunction therewith provide a control chamber that at least in part is defined by an internal wall surface portion and includes a control chamber top portion opening to the outlet, and a piston axially movable in the control chamber and having a piston head in fluid sealing relationship with the wall surface portion, the piston having an fluid passage that opens through the piston head to the control chamber top portion and to the valve seat, the piston being movable in the control chamber between an open position permitting fluid flow through the valve seat from the inlet to the outlet when the fluid pressure at the outlet falls below a preselected level and a closed position that at least one of the piston and an insert mounted to the piston abuts against the valve seat to block fluid flow to the pisotn passageway when the pressure at the outlet is at least a preselected valve and means for resiliently urging the piston to its open position when the pressure at the outlet falls below the preselected level.
A pressure reducing regulator that has a central axis and is mountable to a cylinder for containing fluid under high pressure that has an externally threaded neck with a top annular edge and a plug device mounted in the neck which includes a plug having an bore extending therethrough and a rupturable disk mounted to the plug for blocking fluid flow through the plug bore, comprising a main body having a lower annular chamber that at least in part is defined by a top annular wall, a radial outer annular portion extending below the top annular wall, surrounding the top annular wall and being internally threaded for being threaded to the neck and a radially centered, axially extending reduced diameter tubular portion that is extendable in the plug bore in fluid sealing relationship therewith and is abuttable against the disk while the disk remains imperforated when the annular portion is threaded to the neck with the top wall spaced from the neck, a top portion having a top surface axially above the top wall and a main body bore extending axially through the tubular portion and the top portion and providing a valve seat, a cap mounted to the main body to in combination therewith provide a control chamber to have the main body bore open thereto, said cap having an outlet opening to the control chamber, a piston extending in the control chamber, having an enlarged diametric head in fluid sealing relationship with one of the cap and main body and being axially movable in the control chamber between a closed position blocking fluid flow through the valve seat and an open position, the piston in combination with the main body bore providing a valve chamber having the valve seat opening thereto and a passageway that opens to the valve chamber and the control chamber intermediate the piston head and the outlet and means for moving the piston from its closed position to its open position when the pressure at the outlet falls below a preselected value.
A pressure reducing regulator having a central axis that is mountable to a cylinder having pressurized fluid therein wherein the cylinder has a threaded neck portion that has a top annular edge and a plug device retained in the neck portion with the plug device having a plug mounted in the neck, the plug having a bottom portion and a bore extending axially therethrough, and a rupturable disk mounted to the plug bottom portion to block fluid flow through the plug bore, comprising a main body having a lower annular chamber that at least in part is defined by a top annular wall, a radial outer annular portion extending below the top annular wall, surrounding the top annular wall and being internally threaded for being threaded to the neck and a radially centered, axially extending reduced diameter tubular portion that is extendable in the plug bore in fluid sealing relationship therewith and is abuttable against the disk while the disk remains imperforated when the annular portion is threaded to the neck with the top wall axially spaced from the neck, a top portion having a top surface axially above the top wall and a main body bore extending axially through the tubular portion and the top portion and providing a valve seat, a cap mounted to the main body to in combination therewith provide a control chamber to have the main body bore open thereto, said cap having an outlet opening to the control chamber, a piston extending in the control chamber, having an enlarged diametric head in fluid sealing relationship with one of the main body and the cap and being axially movable in the control chamber between a closed position blocking fluid flow through the valve seat and an open position, the piston in combination with the main body bore providing a valve chamber having the valve seat opening thereto and a passageway that opens to the valve chamber and the control chamber intermediate the piston head and the outlet and means for resiliently acting against the piston to urge it to one of its positions.
Dependencies are inferred from the claim text.