Disclosed are a pressure vessel boss and a pressure vessel having same, the boss comprising: a boss body in which a through hole configured to connect an interior to an exterior of the pressure vessel is formed; and a boss joint portion which surrounds an outer surface of the boss body, radially extends outward, and has an outer surface coming into surface contact with and joined to an opening surface of a liner, wherein the outer surface has a cross-sectional shape having three or more line segments connecting a top to a bottom of the boss joint portion and including at least one convex corner and at least one concave corner.

The conformable pressure vessel having: a plurality of individual pressure vessels, the individual pressure vessels each having an outer wall enclosing an inner volume. The inner volumes are fluidly connected to each other. The individual pressures vessels are oriented parallel to each other.

A system for preparing subcooled liquid oxygen based on mixing of liquid oxygen and liquid nitrogen and then vacuum-pumping, including atmospheric-pressure saturated liquid nitrogen and oxygen tanks. An inlet of the liquid nitrogen tank communicates with pressurized gas, and an outlet is connected to an inlet a of a secondary subcooler. An inlet of the liquid oxygen tank communicates with the pressurized gas, and a first outlet is connected to an inlet b of the secondary subcooler. An outlet c of the secondary subcooler is connected to an inlet d of a primary subcooler. An outlet e of the primary subcooler is connected to a pumping-out device through a rewarming device. A second outlet of the liquid oxygen tank is connected to an inlet n of the primary subcooler. An outlet o of the primary subcooler is connected to an inlet r of the secondary subcooler.

A method of pumping a liquid with a tank truck, power is transferred from a diesel engine through a automatic transmission device to a triplex pump, wherein the triplex pump has a fluid provided to an inlet, an fluid outlet pressure and a fluid outlet flow rate, the diesel engine has a rotational speed, and the automatic transmission has an outlet rotational speed, and has multiple gear ratios is provided. The method comprising determining a delta P by comparing the fluid outlet pressure of the triplex pump to a predetermined pressure, determining a delta F by comparing the fluid outlet flow rate of the triplex pump to a predetermined flow rate, adjusting the rotational speed of the diesel engine to reduce the delta P and delta F, wherein the rotational speed of the diesel engine is held constant once either the delta P or the Delta F is approximately zero.

The present invention relates to devices, systems, and methods for a safety interlock for a gas cylinder. The interlock device of the present invention can prevent a gas cylinder from being removed from a gas administration device as long as gas remains in the gas cylinder.

The present invention provides an apparatus for producing medical foam for wound care or hair stimulation. The apparatus includes a foam generation unit having a fluid reservoir, a fluid delivery line and a foam generation tip. The apparatus also includes a compressed gas unit having at least one container of compressed gas, a source of electric power, and a gas regulator valve. A supply of wound care or hair stimulating solution is communicably connected to the foam generation tip such that when the apparatus is operated medical foam is produced by the foam generator tip.

There is provided a protection structure for a gas cylinder assembly comprising a gas cylinder body and a valve. The gas cylinder body includes a base and a neck to which a proximal end of the valve is connectable in use. The protection structure comprises first and second structural sections, the first section being connectable to the valve such that the second section is spaced from the valve by the first section. Further, in use, the second section is arranged to transfer impact forces to the first section, and the second section is arranged to deform with respect to the second section in response to said impact forces to reduce the peak impact force on the valve.

A method for subcooling liquid cryogen that is used by a cutting tool uses the steps of dividing liquid phase cryogen between a subcooler feed line and tool feed line. The cryogen in the subcooler feed line is expanded to lower the pressure and decrease the temperature of the cryogen, and the expanded liquid cryogen from the subcooler feed line is added to the interior of a subcooler. A heat exchanger is positioned in the subcooler in contact with the expanded liquid cryogen. The cryogen in the tool feed line is subcooled below its saturation temperature by passing the cryogen through the heat exchanger, and the subcooled cryogen from the heat exchanger is supplied to the cutting tool. As a result, the subcooled cryogen supplied to the cutting tool is substantially 100% liquid cryogen without any vapor content.

A pressure vessel includes a shell, a liner, and a boss. The liner is positioned within the shell and defines the interior environment. The boss is located at a first interface between the shell and the liner. The boss includes a cavity and a venting structure located in the cavity. The cavity is located at a second interface between the liner and the boss, and the cavity is located at an interior surface of the boss in communication with the interior environment. A gas vent path is defined from the first interface, through the venting structure, and into the interior environment of the pressure vessel. The disclosure also describes a boss for a pressure vessel and a method of manufacturing the boss. The boss includes a port, a flange, a cavity and a gas venting structure. The cavity and gas venting structure are located on an interior of the flange.

A pressure vessel includes a liner, a composite shell covering the liner, and at least one boss assembly having a metal boss. The metal boss is positioned at respective openings though the liner and the composite shell. A plastic layer is formed between the liner and the metal boss. The plastic layer adheres to both the metal boss and the liner to form a seal at the interface between the metal boss and liner. The plastic layer further increases a torque strength of the metal boss.