187results about How to "Prevent gas leakage" patented technology

The present invention provides an electrolyte membrane-gasket assembly for a fuel cell, including a polymer electrolyte membrane and a gasket, made of a seal material, covering the peripheral portion of the electrolyte membrane, in which the electrolyte membrane has a sequence of a plurality of through-holes in the peripheral portion, and a portion of the gasket covering one surface of the electrolyte membrane and a portion covering the other surface are connected to each other through the through-holes of the electrolyte membrane. This assembly provides a polymer electrolyte fuel cell that is free from gas cross leakage caused by a detachment of the gasket from the polymer electrolyte membrane. It is preferable to further include catalyst layers carried on both surfaces of the polymer electrolyte membrane, respectively, and protective films covering, respectively, sections spanning from the peripheral portion of each of the catalyst layers to the peripheral portion of the polymer electrolyte membrane.

An airbag and an airbag apparatus includes a vent hole operable to close or open to a small extent until a passenger crashes into the airbag, and open or close to a large extent when the passenger crashes into the airbag. An interior of an airbag is partitioned into a first chamber at a center and a second chamber which surrounds the first chamber by an inner panel. A rear panel includes a vent hole for communicating the second chamber and the outside of the airbag. A lid member configured to cover the vent hole may be disposed on an outer surface of the rear panel. A tether may connect the lid member to the inner panel through the vent hole.

Turbocharger apparatus (1) comprising a housing (4), a compressor, a turbine (40), a first inlet (39) for enabling air to be conducted to the compressor, an outlet (36) for enabling air from the compressor to be conducted to an engine, a second inlet (53) for enabling exhaust gases from the engine to be conducted to the turbine (40), a chamber (96), a bearing assembly (82) for permitting the rotation of the turbine (40), and a control system (5, 10) for controlling the speed of the turbine (40), the control system (5, 10) having an exhaust gas sealing system (8, 21, 26) which prevents exhaust gas leakage from the turbocharger apparatus (1), and which allows expansion of parts within the exhaust gas sealing system (8, 21, 26) at high temperatures.

To provide a method of manufacturing a resin hollow molded body wherein, predetermined parts can be simply attached when attaching them in the inside of the blow molded hollow body; and the resin hollow molded body, such as a vehicle fuel tank containing a volatile liquid inside thereof, has a good barrier property against a gas component.

(Means for Solving the Problem)

There is provided a method for obtaining a product of a hollow molded body characterized in that: a thermoplastic resin parison 6, extruded to a tubular state, is expanded by blow molding; then dies 2, 4 are once divided to assemble predetermined parts 32, 34 inside of the hollow molded body; and the surfaces of the divided dies are joined again.

Variable turbocharger apparatus comprising a housing, a compressor, a turbine, a chamber which extends around the turbine, a bearing assembly for the turbine, vanes mounted in the chamber, a piston positioned between the housing and the turbine, a control device controlling the piston, a piston end nearest the bearing assembly defining a gap, which is variable in size to control exhaust gases acting on the turbine, at least one bypass aperture which opens to allow exhaust gases that are not required for acting on the turbine to bypass the turbine, and sliding of the piston being such that the piston is always maintained in a position which enables the turbine speed to be controlled through the gap alone when there is no bypass and through the gap and the bypass aperture when there is bypass.

The present invention relates to compressed gas-operated firearms and more particularly to repeating gas cylinder pistols with conveyer feed of bullets for shooting. The pistol comprises a hollow pistol frame (1) made integral with a grip (3) and a trigger bow (50), a movable barrel (6) with a bullet bore (97), a load (12) and a mainspring (19) disposed on the barrel (6), a valve (57) installed in a gas chamber (110) inside a body (56), a gas cylinder (102) installed inside a rear hollow interior (104) of the grip (3), a magazine (27) installed in a front hollow interior (151) of the grip (3), separated from a rear hollow interior (104) by a partition (150), a striker-and-trigger mechanism installed inside the pistol frame (1) and on the trigger bow (50) and interacting with the movable barrel (6) and the magazine (27) for supplying bullets (246) and portions of gas from the gas cylinder (102) to the bullet bore (97) of the barrel (6), a mechanism for installing the gas cylinder (102), disposed below the gas cylinder (102) in the grip (3). In a hollow interior (4) of the pistol grip (1) a support (5) is installed, which serves as a base for the movable barrel (6) that moves along the support (5) under the action of the striker-and-trigger mechanism. The magazine is equipped with containers (100), each container (100) accommodating one bullet (246), and is installed so that an upper part of the magazine (27), extending above the pistol frame (1), is disposed between the barrel (6) and the valve (57), and the bullet opening (98) provided in a front wall (99) of the magazine (27), through which the bullet (246) under the effect of a portion of gas gets into the bullet bore (97) of the barrel (6), is disposed coaxially with the bullet bore (97), with the valve (57) and the container (100) which assumes such position before each shot. A breech block (2)is installed above the pistol frame (1).

An interface for a respiratory mask includes a first flexible member and a second flexible member. The first flexible member is configured to be accommodated on a user's face. The first flexible member circumscribes one or more portions of the user's face. The second flexible member is configured complimentary to the first flexible member to circumscribe the one or more portions of the user's face. Further, the second flexible member is attached with the first flexible member to configure at least one hollow enclosure therebetween. In an embodiment, a hollow enclosure of the at least one hollow enclosure is filled with a cooling gel for cooling the user's face. The second flexible member is configured to accommodate the respiratory mask thereon.

Drop-to-drop connection schemes are described for putting a microfluidic device in fluidic communication with a fluid source or another microfluidic device, including but not limited to, putting a microfluidic device in fluidic communication with the perfusion manifold assembly.

The present invention relates to an exhaust manifold gasket having a metallic core, at least one insulating layer, and an embossed layer. The metallic core has two sides with at least one side having a plurality of projections. The insulating layer has two sides, with the first side contacting the projections of the metallic core and the second side contacting the embossed layer. The embossed layer is a metallic flange having a lower leg, a convex face, and an upper leg.

A power supply device comprises a battery assembly formed by stacking secondary battery cells having safety valves for exhausting gas, end plates being arranged at both end faces of the battery assembly in the stacking direction, a gas duct guiding gas emitted from the safety valves in a prescribed gas exhaust passage, and fixing portions fixing both ends of the gas duct to the end plates in a position where the gas duct faces the safety valves. In a state in which the gas duct is fixed to the end plates in at least one of the fixing portion a fixing opening of a slit is formed extending in the direction parallel to the direction in which the secondary battery cells are stacked, and a fixing member is inserted into the slit fixing opening.

An exhaust valve includes a valve body that is fixed for rotation with a shaft supported by at least one bushing. A single spring is used to bias the shaft to hold the valve body in a valve closed position, and to exert an axial load on the shaft to seal the shaft against the bushing to prevent exhaust gas leakage.

The invention provides a vertical hammock typed air damping sleeve, comprising an air column sheet and a damping sheet; the air column sheet comprises a plurality of air columns which are formed by thermally sealing and bonding two external films; air column thermal sealing lines are arranged among the air columns; the air column sheet is bent to form a first damping part, a basic part and a second part which are communicated with each other; a receiving space is enclosed by the first damping part, the basic part and the second damping part; at least one damping sheet is fixed in the receiving space and is a hammock shape; the receiving space is used for receiving articles. The vertical hammock typed air damping sleeve can provide multiple damping protection functions for the article to be wrapped, avoids the articles from being directly contacted with the air column sheet, and effectively prevents the gas leakage which is caused by that the air column is punctured by the articles.

A microwave plasma processing method and, in which a linear plasma is produced by means of a microwave, and an object to be processed is subjected to processing under atmospheric pressure or under a pressure near atmospheric pressure when the object is moved, while a surface of the object is maintained at a horizontal position with respect to the linear plasma. A plasma head has an H-plane slot antenna, and slots are arranged alternately on both sides of a centerline of a waveguide at a pitch of λg/2 (λg: wavelength of the microwave with the waveguide). A uniforming line having a distance of n·λg/2 from the slots to an emission end of the plasma head is provided (n: an integral number).

A converter assembly includes an outer shell defining an internal cavity that receives first and second catalyst substrates, which are spaced apart from each other to form a gap. A solid inner ring with a sensor boss is installed within the internal cavity. The solid inner ring is positioned in the gap between the first and second catalytic substrates. The solid inner ring provides insulation within the gap. The sensor boss extends radially outwardly beyond an outer surface of the outer shell. The sensor boss is welded to the outer surface of the outer shell to prevent exhaust gas leakage.

In a secondary battery that includes a cap assembly, the cap assembly includes a cap plate that includes a vent formed on one surface of the cap plate and a reinforcing portion formed at a region adjacent to the vent, on the opposing surface of the cap plate to the surface on which the vent is formed. Alternatively, the cap plate may include a reinforcing portion formed at a region adjacent to the vent, on the surface on which the vent is formed. The vent is prevented from being cracked by external pressure and gas is prevented from leaking inside the secondary battery.

The invention discloses a control system of a domestic intelligent range hood. The control system comprises a control module, a wind speed regulating module, a smoke detecting module, a gas concentration detecting module, a voice prompting module, a timing module, a display module, an alarming module and a power supply module, wherein the control module is a single chip, is respectively connected with the wind speed regulating module, the smoke detecting module, the gas concentration detecting module, the voice prompting module, the timing module, the display module, the alarming module and the power supply module and is used for controlling each module. According to the control system disclosed by the invention, smoke and gas concentration are detected in real time and the detected parameters are sent to the control module, so that the rotating speed of a fan and an audible and visual alarm can be controlled; the timing module is used for accumulating the working time length of the fan so as to prevent problems of overlong working and poor oil suction effect; meanwhile, the control system is also provided with the voice prompting module, has the characteristics of being simple to operate, being high in usability and saving electric quantity, and is also capable of effectively protecting personal security of a user.

Provided are an indoor gas detecting apparatus and an indoor air purification system. The indoor gas detecting apparatus includes: a gas sensor unit composed of a plurality of gas sensors and a fine dust sensor; a controller controlling overall operations; a display unit; an alarm unit; and a communication unit transmitting/receiving data to/from an external apparatus. If a detected gas amount exceeds a predetermined permission level of each gas, the controller transmits an operation signal to an external automatic gas blocking apparatus or an external air purification apparatus so as to operate the automatic gas blocking apparatus or the air purification apparatus. Accordingly, not only fresh indoor air can be maintained but also an explosion or a fire can be prevented.

A fuel cell that prevents gas slippage, with minimal reduction in effective area for electrode reaction. At least one of a fuel gas flow path and an oxidizing gas flow path is configured with flow channels having bends and so that gas flows between ends of the flow channels, and, among ridges between a neighboring upstream-side portion of a flow channel and a downstream-side portion of the flow channel, a gas diffusion layer touching at least a ridge between an upstream region of the flow channel on the upstream side and a downstream region of the flow channel on the downstream side, has a lower porosity than the gas diffusion layer touching other ridges and touching the flow channels.