A method for manufacturing a high-pressure tank including a liner and a fiber-reinforced resin layer, the fiber-reinforced resin layer having a first reinforcing layer covering an outer surface of the liner and a second reinforcing layer covering an outer surface of the first reinforcing layer includes: forming a cylinder member made of a fiber-reinforced resin and having fibers oriented in a circumferential direction of the cylinder member; forming two dome members made of the fiber-reinforced resin; forming a reinforcing body that is the first reinforcing layer by joining the cylinder member and the dome members; and forming on an outer surface of the reinforcing body the second reinforcing layer made of the fiber-reinforced resin and having fibers oriented across the dome members.

Disclosed herein is a structure that comprises a tank including an outer cylindrical surface and a domed end. The structure also comprises a tank skirt positioned circumferentially around the tank. A wall of the tank and a wall of the tank skirt form two sides of a y-joint between the tank and the tank skirt. The y-joint includes a wedge structure positioned between the tank and the tank skirt. Additionally, a thickness of at least one of the wall of the tank or the wall of the tank skirt forming the y-joint tapers such that the thickness of the at least one of the wall of the tank or the wall of the tank skirt that tapers has a greater thickness at the y-joint than away from the y-joint.

Disclosed herein is a structure that comprises a tank including an outer cylindrical surface and a domed end. The structure also comprises a tank skirt positioned circumferentially around the tank. A wall of the tank and a wall of the tank skirt form two sides of a y-joint between the tank and the tank skirt. The y-joint includes a wedge structure positioned between the tank and the tank skirt. Additionally, a thickness of at least one of the wall of the tank or the wall of the tank skirt forming the y-joint tapers such that the thickness of the at least one of the wall of the tank or the wall of the tank skirt that tapers has a greater thickness at the y-joint than away from the y-joint.

An energy and hydrogen transport system includes a duct to transfer hydrogen. The duct has a pump or fan driven by an electric motor to pressurize or create a vacuum therein. A double walled container stores hydrogen.

An energy and hydrogen transport system includes a duct to transfer hydrogen. The duct has a pump or fan driven by an electric motor to pressurize or create a vacuum therein. A double walled container stores hydrogen.

This invention relates to a boss assembly that seals a pressure vessel and more particularly to sealing a pressure vessel having a composite outer shell for use with a source of compressed gas having a boss and boss cover in sealing engagement. The composite outer shell is wound about the boss and locked into at least one notch and/or a reverse draft cut. The boss cover is removably fastened to the boss utilizing at least one fastener. The principle use is for storage and usage of compressed gas in mobile applications that typically benefit from light weight pressure vessels however other applications will benefit from this invention. For example, applications that routinely fill and/or un-fill containers made of woven, composite, and etc. materials will benefit from this invention.

This invention relates to a boss assembly that seals a pressure vessel and more particularly to sealing a pressure vessel having a composite outer shell for use with a source of compressed gas having a boss and boss cover in sealing engagement. The composite outer shell is wound about the boss and locked into at least one notch and/or a reverse draft cut. The boss cover is removably fastened to the boss utilizing at least one fastener. The principle use is for storage and usage of compressed gas in mobile applications that typically benefit from light weight pressure vessels however other applications will benefit from this invention. For example, applications that routinely fill and/or un-fill containers made of woven, composite, and etc. materials will benefit from this invention.

A method of manufacturing a composite vessel assembly includes the step of placing the composite vessel assembly in a pliable containment prior to curing of a resin of the composite vessel assembly. With the composite vessel assembly in the pliable containment, a vacuum is applied through an orifice in the pliable containment to evacuate air and compact the composite vessel assembly.

A method of manufacturing a composite vessel assembly includes the step of placing the composite vessel assembly in a pliable containment prior to curing of a resin of the composite vessel assembly. With the composite vessel assembly in the pliable containment, a vacuum is applied through an orifice in the pliable containment to evacuate air and compact the composite vessel assembly.

Disclosed herein is a structure that comprises a tank including an outer cylindrical surface and a domed end. The structure also comprises a tank skirt positioned circumferentially around the tank. A wall of the tank and a wall of the tank skirt form two sides of a y-joint between the tank and the tank skirt. The y-joint includes a wedge structure positioned between the tank and the tank skirt. Additionally, a thickness of at least one of the wall of the tank or the wall of the tank skirt forming the y-joint tapers such that the thickness of the at least one of the wall of the tank or the wall of the tank skirt that tapers has a greater thickness at the y-joint than away from the y-joint.