A tank includes a liner including an inner shell; and a reinforcing layer covering an outer surface of the liner; wherein the reinforcing layer is formed by continuously winding resin-impregnated fiber bundles around the liner, the reinforcing layer includes a hoop layer placed in a side of the liner, and a helical layer, gaps are formed between adjacent bundles of the resin-impregnated fiber bundles wound in the hoop layer, there is at least one site where the resin-impregnated fiber bundles are wound without forming a gap between adjacent bundles in the helical layer, and resin in the resin-impregnated fiber bundles has a resin toughness value of not less than 1.0 MPa.Math.m.sup.0.5.

A ring-wing floating platform is disclosed. The ring-wing floating platform includes a floating hull, a top of the floating hull being above a sea surface and its geometry at a water plane is centrally symmetric, a ring-wing surrounding a perimeter of a bottom of the floating hull with a horizontal projection of concentric annular geometries, a positioning system located at the bottom of the floating hull, and a topsides located above the floating hull and connected to the floating hull by deck legs or installed directly on the top of the floating hull. The axes of the ring-wing and the floating hull are collinear, and their bottoms are in a same horizontal plane. The ring-wing and the floating hull are connected together as a unitary structure by multiple connecting components with an annular gap in-between.

An apparatus, system and method for measuring quantity of a material are disclosed. One or more sensors are used to measure the quantity of the material are measured and error causing parameters are also measured. Error causing parameters are processed by executing one or more correction methodologies to determine a correction output. The quantity of the material is measured by using the correction output. One or values associated with the quantity of the material are measured and displayed. The one or more values are transmitted to a server and informative messages are received from the server.

An environmentally friendly multifuel fueling platform includes a tower structure and a canopy structure supported on legs a predetermined distance above ground to facilitate the passage of land vehicles beneath. The canopy structure is releasably affixed to the tower structure. An energy source is housed within the canopy structure and the tower provides access to the canopy from the ground, as well as providing operational supply of one of a liquid, gaseous and electrical energies to the energy source.

Disclosed is a vending system for supply of product from a plurality of containers each having a corresponding access door having an electrically activatable lock arrangement 200. The system has an interface module by which a predetermined maximum electrical power is made available for supply to the containers and lock arrangements such that each lock arrangement has a plurality of operational modes. The modes include: an active mode by which the lock arrangement is activatable in response to a vending instruction; a standby mode by which the lock arrangement awaits a vending instruction; and a sleep mode by which the lock arrangement minimises power drawn from the interface module. The interface module operates the lock arrangements in the standby mode and the interface module operates at least one lock arrangement in the sleep mode, and at least one lock arrangement in the active mode.

A method for molding a composite pressure vessel liner to secure a boss to the liner is described. The method comprises providing a moldable liner having an end section with a neck and a port. A boss is positioned around the neck of the liner and the liner is heated and pressure is applied to mold the liner to form to the shape of the boss. The angle of the molded liner secures the boss in place around the liner and it is able to withstand high pressures. A tool for molding the liner and a method for using the tool is also described. The tool comprises a tool body and a pipe having external threads. The tool body abuts the liner and the boss. Winding the pipe exerts pressure on the liner, which when heated, forces the liner to mold to the shape of the boss.

A reinforcement element, suitable for composite pressure vessel, may be configured to be inserted and to fill in a hollow shaft of a plastic liner of the composite pressure vessel, the hollow shaft connecting opposite walls of the liner. The reinforcement element may include a central part and two external parts constituted by a plurality of continuous fibres impregnated with a first resin. The central part of the reinforcement element may have a dimension substantially equal to the dimension of the hollow shaft and being a full part. The two external parts may be able to be unfolded and fixed on the external surface of opposite walls of the liner. A composite pressure vessel may include such a reinforcement element.

A fluid drain system for pressurized fuel systems includes a fluid drain tool that includes: an enclosure including a collection cavity; a fitting configured for removable coupling to a fluid filter drain valve to fluidly couple the fluid drain tool to the fluid filter drain valve; a tube that fluidly couples the fitting to the enclosure, such that fluid collected from the fluid filter drain valve can be transferred through the tube to the collection cavity of the enclosure; and a selectively openable valve having a first end in fluid communication with the collection cavity of the enclosure, and a second end in fluid communication with an atmosphere.

A multiply-redundant system that prevents a driver from starting and/or moving a vehicle if a compressed natural gas fill system is not correctly and completely disconnected from the vehicle. One or more sensors in combination with one or more optional microswitches combine to lock-out the vehicle's ignition or otherwise prevent it from starting and/or moving. For different levels of safety, different combinations of sensors can be used with the lowest level having a single proximity sensor sensing the presence or absence of a high-pressure fill hose. The highest level of safety being achieved by having separate proximity sensors on the fuel fill hose fitting, the gas cap cover and a manual safety valve along with a redundant microswitch. An optional override that may be restricted as to the number of times it can be used can allow starting with a faulty sensor in order to allow maintenance.

It is object of the invention to reduce the technical expenditure for refilling of gas bottles. For solving the problem, a claimed fitting comprises a gas tap for gas withdrawal and an opening for refilling a liquid gas bottle. The opening for refilling a liquid gas bottle can be connected, in particular by opening a valve, in a gas-conducting manner to a hose-shaped or tubular line of the fitting, which can extent into a liquid gas bottle by at least 300 mm, preferably at least 400 mm, if the fitting is connected with such a gas bottle. Hereby, it can achieved that the line extents into the liquefied part of the gas, which especially enables a very fast emptying though pumping. Emptying is necessary when a refilled gas bottle proves to be untight. A speed advantage is thereby achieved. Basically, there is an opening at the bottom side of the fitting adjacent to the hose-shaped or tubular line. The bottom side is the side, which adjoins the liquid gas bottle or respectively is arranged entirely in the bottle or in a bottle neck when the fitting is connected to a liquid gas bottle. This opening at the bottom side can be connected to the gas tap in a gas-conducting manner, specifically typically by rotating a corresponding rotary handle. The hose-shaped or tubular line protrudes relative to the opening, specifically in particular by at least by 200 mm, particularly preferred by at least 300 mm. A method concerns the refilling of a liquid gas bottle comprising the claimed fitting.