Aircraft fuel system including a fuel vessel containing a non-mixture fuel. A protective vessel is arranged about the fuel vessel such that the fuel vessel is contained within the protective vessel and a protective space is defined between an outer surface of a vessel wall of the fuel vessel and an inner surface of a vessel wall of the protective vessel. At least one mounting structure fixedly positions the fuel vessel within the protective vessel. A fuel consumption device configured to consume the non-mixture fuel. A fuel output fluidly connects an interior of the fuel vessel to the fuel consumption device, the fuel output being fluidly isolated from the protective space. A relief output fluidly connects the protective space to a relief flow path, the relief output and relief flow path configured to vent gas from the protective space and remove any non-mixture fuel from the protective space.

A sensor bracket is provided with frame members supporting an acceleration sensor, the frame members having circular arc members holding an outer periphery of a tool of a robot in a state in which circumferential-direction gaps are defined in at least one portion of the circular arc members in a circumferential direction, and a bolt thread-screwed into the frame members so as to reduce the circumferential-direction gaps.

A membrane anchor mechanism which fixes a membrane provided on an inner wall surface side of a concrete wall via a heating insulating material to the concrete wall, includes a rod-shaped leg portion which is erected on the concrete wall, an anchor which is supported by the leg portion in a state of being separated from the concrete wall and is inserted into a through-hole passing through the heat insulating material and the membrane, and a pressing part which is fixed to the anchor through the through-hole and presses the membrane.

An adsorbed natural gas storing tank is provided. The adsorbed natural gas storing tank includes a tank body that has an upper plate and a lower plate coupled to define an inner space provided with an adsorbent material. The tank body includes an opening that extends through the upper and lower plates. A central plate is inserted in the opening to seal one side of the tank body. Additionally, the central plate has a plurality of discharge apertures formed along a circumferential wall thereof to discharge natural gas reacted with the adsorbent material and has a mounting region therein. A filter assembly is inserted in the mounting region, is fastened to the central plate, filters natural gas passing through the discharge apertures, and is equipped with a control valve for adjusting natural gas discharge.

A locking mechanism for a tank body and a tank cover of a pressure tank. The locking mechanism includes: a tank body, a tank chamber, a tank cover, a hydraulic cylinder, a locking ring, a spring cylinder, a fixing supporting mechanism, a fixing plate, a barb, a notch, and a pulling cylinder.

A storage tank comprises a gas storage chamber and at least one device to hold a component in the storage chamber.

A sensor bracket is provided with frame members supporting an acceleration sensor, the frame members having circular arc members holding an outer periphery of a tool of a robot in a state in which circumferential-direction gaps are defined in at least one portion of the circular arc members in a circumferential direction, and a bolt thread-screwed into the frame members so as to reduce the circumferential-direction gaps.

An adsorbed natural gas storing tank is provided. The adsorbed natural gas storing tank includes a tank body that has an upper plate and a lower plate coupled to define an inner space provided with an adsorbent material. The tank body includes an opening that extends through the upper and lower plates. A central plate is inserted in the opening to seal one side of the tank body. Additionally, the central plate has a plurality of discharge apertures formed along a circumferential wall thereof to discharge natural gas reacted with the adsorbent material and has a mounting region therein. A filter assembly is inserted in the mounting region, is fastened to the central plate, filters natural gas passing through the discharge apertures, and is equipped with a control valve for adjusting natural gas discharge.

A storage tank comprises a gas storage chamber and at least one device to hold a component in the storage chamber.

A locking mechanism for a tank body and a tank cover of a pressure tank. The locking mechanism includes: a tank body, a tank chamber, a tank cover, a hydraulic cylinder, a locking ring, a spring cylinder, a fixing supporting mechanism, a fixing plate, a barb, a notch, and a pulling cylinder.