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.

An integrated fill system is provided for a vehicle. The integrated fill system can include a receptacle, a cap that mates with the receptacle, and a fill line that is in fluid communication between the receptacle and a container. The integrated fill system can further include a valve between an opening on an end of the container and an end of the fill line to allow one-way fluid communication for entry of compressed material into the container. The integrated fill system can further include a draw line on an opposite end of the container to maintain separate lines for filling and drawing compressed material into/from the container.

A member for manufacturing a high-pressure tank liner is provided for producing a high-pressure tank liner with better welding quality between its liner halves than conventional products. The high-pressure tank liner is produced by welding together a pair of liner halves that have cylindrical bodies to be connected with each other on each joint portion having an opening at its one end. The member includes: the liner half; and a cap member that is easily attached to and removed from a communication tube of the liner half, which communication tube is formed on another end opposite to the joint portion between the liner halves and causes an inside and an outside of the high-pressure tank liner to communicate with each other.

A method of producing a high-pressure steel cylinder by forming from an individual dimension piece, consisting of an upper neck on the rounded end, which protrudes from the cylinder and it is provided by an opening the cylinder is additionally provided on its bottom with another bottom neck made in an inner material strengthening which is orientated insidewards of the high-pressure steel cylinder and the inner material strengthening is provided by a through-out opening.

Various embodiments provide an end-to-end gaseous fuel transportation solution without using physical pipelines. A virtual pipeline system and methods thereof may involve transportation of gaseous fuels including compressed natural gas (CNG), liquefied natural gas (LNG), and/or adsorbed natural gas (ANG). An exemplary pipeline system may include a gas supply station, a mother station for treating gaseous fuels from the gas supply station, a mobile transport system for receiving and transporting the gaseous fuels, and user site for unloading the gaseous fuels from the mobile transport system. The unloaded gaseous fuels can be further used or distributed.

An integrated fill system is provided for a vehicle. The integrated fill system can include a receptacle, a cap that mates with the receptacle, and a fill line that is in fluid communication between the receptacle and a container. The integrated fill system can further include a valve between an opening on an end of the container and an end of the fill line to allow one-way fluid communication for entry of compressed material into the container. The integrated fill system can further include a draw line on an opposite end of the container to maintain separate lines for filling and drawing compressed material into/from the container.

A compressed gas storage system that includes a pressure vessel. The pressure vessel includes a first vessel portion and a second vessel portion in fluid communication with the first vessel portion. The pressure vessel includes a third vessel portion in fluid communication with the second vessel portion. The compressed gas storage system includes a first valve positioned between the first vessel portion and the second vessel portion and a second valve positioned between the second vessel portion and the third vessel portion. The first valve allows and impedes fluid flow between the first and the second vessel portions. The second valve allows and impedes fluid flow between the second and the third vessel portions.

A composite storage tank may include a wall structure including at least three regions including an inner region, an outer region, and at least one permeation barrier. Another region may be optionally incorporated for venting potential permeation of fluids. The at least one permeation barrier and/or the venting layer may be strategically positioned between the inner region and the outer region to reduce or at least partially prevent fluid permeation of the inner region or the outer region. A vehicle may include such a composite storage tank. Methods of forming a composite fluid storage tank may include forming an inner composite region, applying a permeation barrier to an outer surface of the inner composite region, forming an outer composite region, and curing the inner composite region and the outer composite region with the permeation barrier to form the composite fluid storage tank.

An end of a shell forming a high-pressure container is opened to form an opening. A cap is disposed partially inside the opening to close the opening. A shell reinforcing layer having a first reinforcing layer that is made of a first fiber-reinforced resin having a fiber direction oriented in a circumferential direction, and a second reinforcing layer that is integrated with the first reinforcing layer and made of a second fiber-reinforced resin having a fiber direction oriented in an axial direction, is wrapped in layers around an outer circumferential surface of the shell. The second reinforcing layer is placed over a region of the first reinforcing layer.

A retention assembly for a valve assembly of a charged cylinder may comprise a first fitting coupled to the valve assembly and a second fitting coupled to the charged cylinder. A retaining member may be coupled between the first fitting and the second fitting. The retaining member may be disposed within an interior chamber of the charged cylinder.