Provided is a handle assembly for a cylinder. The handle assembly includes a shroud configured to attach to a collar of the cylinder to partially surround a valve port of the cylinder, the shroud having a body with first and second ends circumferentially spaced from one another to define a gap through which a valve is configured to extend, and a plurality of circumferentially spaced locking protrusions projecting from the body, and a handle configured to attach to the shroud, the handle having a body defining a channel for receiving the shroud, and first and second ends circumferentially spaced from one another to define a gap through which the valve is configured to extend, wherein the channel includes a plurality of openings in a wall thereof through which the locking protrusions extend when the handle is attached to the shroud to secure the handle to the shroud.

A boss includes a neck and a flange that extends radially outward from the neck. The neck includes a bore therethrough with a longitudinal axis. The flange includes an exterior surface, an interior surface, and a peripheral surface at a farthest extent from the longitudinal axis. The peripheral surface connects the interior surface and the exterior surface and includes, along any radius of the boss, a first circumferential ridge and a second circumferential ridge, wherein the first circumferential ridge is located closer to the exterior surface than the second circumferential ridge. In another aspect, a pressure vessel includes a boss and a liner. In yet another aspect, a method of assembling a pressure vessel is described, which includes inserting the boss through the aperture of the liner and connecting the boss and liner so that the peripheral surface of the boss mates with the perimeter surface of the liner.

A portable gas cylinder assembly is provided that includes a gas cylinder having a central axis and a protective shroud configured to encase the gas cylinder and including first and second opposed half-sections mechanically connected to one other along a vertical plane intersecting the central axis of the gas cylinder.

The invention relates to a container for holding and storing liquids and viscous materials, in particular cryogenic fluids, comprising a jacket (12), which defines the interior (14) of the container (10) having a chamber (16), said container (10) being constituted of at least two container structures (20, 20, 20) and each of said at least two container structures (20, 20, 20) being formed as one piece from a blank (32) and having a dome portion (22), a branching portion (24), which is contiguous to the dome portion (22), and two cylinder portions (26, 28; 26, 28), which are contiguous to the branching portion (24), and the mutually facing container structures (20, 20; 20, 20) which are adjacent to each other being joined together.

Provided is a handle assembly for a cylinder. The handle assembly includes a shroud configured to attach to a collar of the cylinder to partially surround a valve port of the cylinder, the shroud having a body with first and second ends circumferentially spaced from one another to define a gap through which a valve is configured to extend, and a plurality of circumferentially spaced locking protrusions projecting from the body, and a handle configured to attach to the shroud, the handle having a body defining a channel for receiving the shroud, and first and second ends circumferentially spaced from one another to define a gap through which the valve is configured to extend, wherein the channel includes a plurality of openings in a wall thereof through which the locking protrusions extend when the handle is attached to the shroud to secure the handle to the shroud.

Cladding of the interior of a component part of a pressure vessel is shown. A lining which conforms to at least a portion of the interior geometry of the component is positioned in the interior of the component. The lining is then pressed into the component past its yield strength. The lining is then fused to the component.

The invention relates to a protective cap for a pressurized fluid cylinder valve, comprising a hoop defining a sheltered protected space, the lower end of the hoop being secured to the generally annular base that is intended to be mounted around the neck of a pressurized fluid cylinder. The cap is characterized in that the hoop comprises a draw-formed metal sheet. The invention also relates to the corresponding method.

A portable gas cylinder assembly is disclosed which includes a gas cylinder having a central axis and a protective shroud configured to encase the gas cylinder and including opposed half-sections mechanically connected to one other along a vertical plane intersecting the central axis of the gas cylinder.

A reservoir assembly includes one or more pressure vessels each having a non-circular cross-sectional shape including a rounded rectangle having four generally flat sides with rounded corners. The pressure vessels may be formed of extruded metal, such as aluminum, and have a generally constant cross-section. The pressure vessels include stiffening ribs and varying wall thicknesses to improve strength and to minimize stresses when pressurized, such as during operation when filled with compressed gas. The stiffening ribs meet in the center of each of the pressure vessels and divide the interior volumes into four equal sections. A cap of stamped aluminum is fitted and fully welded to enclose each end of the pressure vessels. One or both of the caps on each of the pressure vessels has a pressure fitting. Two or more pressure vessels extend parallel to one another and are attached together to form the reservoir assembly.

A boss includes a neck and a flange that extends radially outward from the neck. The neck includes a bore therethrough with a longitudinal axis. The flange includes an exterior surface, an interior surface, and a peripheral surface at a farthest extent from the longitudinal axis. The peripheral surface connects the interior surface and the exterior surface and includes, along any radius of the boss, a first circumferential ridge and a second circumferential ridge, wherein the first circumferential ridge is located closer to the exterior surface than the second circumferential ridge. In another aspect, a pressure vessel includes a boss and a liner. In yet another aspect, a method of assembling a pressure vessel is described, which includes inserting the boss through the aperture of the liner and connecting the boss and liner so that the peripheral surface of the boss mates with the perimeter surface of the liner.