Abstract: A fluid vent valve (1) for a fuel tank, comprising: a valve body (10) having an inlet opening connected or connectable to a tank, an outlet opening and a main chamber (13) interposed between said inlet opening and said outlet opening (12); a piston (20) inserted or insertable in the main chamber (13) and movable therein so as to define a closed configuration and an open configuration; a pendulum (30) hinged to the valve body (10) and coupled to the piston (20) so as to promote a movement of the piston (20) between the two configurations; a flow reducer (40) operatively interposed between the outlet opening (12) and the piston (20).

Abstract: An insert for a fuel vapor valve traps liquid fuel and prevent the fuel from leaking out of the valve. The insert includes a tube and a skirt disposed around the tube. The skirt seals against a portion of the fuel vapor valve, such as against an inner wall of a valve port or on a top portion of the valve to act as a valve cap. The tube and the skirt cooperate with the fuel vapor valve to form a reservoir that traps fuel.

Abstract: A hermetic battery including: a safety valve through which gas generated in the battery due to increase in pressure in the battery is discharged outside the battery, wherein the safety valve includes a first safety valve 9a, 10 which is operated at a first operating pressure, and a second safety valve 15a which is operated at a second operating pressure higher than the first operating pressure, a rate at which the gas is discharged while the second safety valve 15a is operated is higher than a rate at which the gas is discharged while the first safety valve 9a, 10 is operated, and the first safety valve 9a, 10 is closed at least while the second safety valve 15a is operated.

Abstract: A valve for a pressure vessel system includes a housing having a cavity defined by an inner surface of the housing. The housing further includes a rod aperture and a pair of fluid flow ports. An actuator is disposed adjacent the housing. The valve also includes a piston having a rod coupled to a piston head. The piston head is disposed in the cavity of the housing, and the rod disposed through the rod aperture. The rod is also coupled to the actuator. A ring seal is disposed between the piston head and an inner surface of the housing. The ring seal biases the piston head toward one of the fluid flow ports and seals the one of the fluid flow ports to close the valve when the actuator is deactivated. The ring seal is elastically deformed and the fluid flow ports are opened when the actuator is activated.

Abstract: A liquid retaining pressure relief valve for electrochemical battery cells is provided including a pressure regulator and a membrane vent that are mounted to the top and bottom ends of a threaded valve housing or plug. The valve housing or plug screws into the cell cover from the outside of the cell such that the membrane vent is internal to the cell. The membrane vent includes a thin gas permeable liquid repellant membrane that is molded into the body of the vent. The membrane is preferably composed of an expanded polytetraflouroethylene (ePTFE) polymer.

Abstract: A vent cap is provided for releasing gas from containers, while preventing spillage of the contents therein when the container is tipped from a vertical position. The vent cap has a ball bearing mounted in a ball bearing containment chamber on the top thereof which, when the container is in an upright vertical position, allows release of gases from the container but, when the container is tipped, allows a piston disposed within the vent cap to close off gas release ducts formed in the vent cap, thus effectively preventing spillage of the containers contents.

Abstract: A leak-proof rechargable lead-acid battery cell contains a passage in cooperation with a one-way valve which allows gas to escape from the interior of the battery cell when it exceeds a predetermined pressure. In addition, electrolyte can be replenished by extending a syringe needle through suitable apertures and piercing a self-sealing rubber plug.

Abstract: A metal oxide-hydrogen battery having an outer safety shell. The battery to be used in a confined area such as in an aircraft or manned spacecraft, and includes a pressure vessel that contains at least one cell module. Hydrogen gas under pressure is confined within the pressure vessel and is impregnated in the cell modules. An outer shell, preferably formed of molded plastic, is disposed around the pressure vessel and a vent conduit connects the space between the vessel and the shell with the exterior. Any hydrogen that accidentally leaks from the vessel is captured in the space and vented to the exterior.

Abstract: What is provided by this invention is a powdery pharmaceutical composition for nasal administration comprising physiologically active polypeptide or its derivative such as calcitonin, insulin, etc. and a water-absorbing and water-insoluble base. The pharmaceutical composition allows polypeptide or its derivative to be efficiently absorbed through the nasal macous membrane when it is nasally administered.

Abstract: A nonspill vented closure assembly is provided for a wet cell type of storage battery which normally provides a venting hole to the interior of the battery, and which includes a tiltable weight that lifts a valve to close the vent hole whenever the battery is tilted with respect to the vertical beyond a certain angular displacement, so as to prevent leakage of the liquid electrolyte through the closure assembly. The closure assembly includes a tubular casing which is threaded into the normal fill hole of the battery. A lead weight which constitutes the tiltable mass is supported in the casing. A valve stem connects the lead weight to a valve member, and it serves to move the valve member against an annular valve seat surrounding an orifice in the lower end of the casing whenever the lead weight is tilted. The valve stem includes a ball at its upper end which extends into a cavity in the bottom of the lead weight, and which is held in the cavity by a plastic disc which forms a bearing surface for the ball.