Abstract: The present invention relates to the field of machines for cleaning, particularly vacuum cleaning devices. There is disclosed a filter cartridge for a vacuum cleaner comprising first and second opposite end walls, a side wall or walls which extend between the end walls so as to define an enclosure which surrounds a filter interior, wherein one or more of the walls comprises filter membrane material, the cartridge having an opening provided through the first end wall for receiving air-entrained detritus into the interior, the opening being defined by a rigid support structure which spans and supports the first end wall of the cartridge. The cartridge typically includes a non-return valve which closes when suction is removed so as to help prevent collected detritus escaping from the filter cartridge interior. The valve may comprise a conical valve with flexible facets, or a cantilever flap.

Abstract: A pressure relief valve for an inflatable device, and an inflatable pool including the pressure relief valve are provided. The pressure relief valve includes: a valve seat configured to connect to the inflatable device; and a valve body. The valve body is disposed at least partially within the valve seat and includes a valve shell, comprising a vent hole therein, and a valve diaphragm arranged at a bottom of the valve shell. The valve diaphragm is moveable between a closed position in which the vent hole is closed and an open position in which the vent hole is open. The valve body further includes a spring and a valve diaphragm fixing part arranged around the vent hole. The valve shell and the valve diaphragm fixing part are connected to each other, and the spring is biased to push the valve diaphragm into the closed position.

Abstract: A vacuum breaker valve includes a valve body and a vacuum breaking device mounted in the valve body. The valve body has a periphery provided with multiple air vent holes corresponding to the vacuum breaking device. The vacuum breaking device includes a mounting barrel, an elastic member, a braking member, a mounting plate, a water stop gasket, and a water inlet disk. The vacuum breaking device is assembled previously and then directly fitted into the valve body to construct the vacuum breaker valve. Thus, the vacuum breaking device and the valve body are combined together for a whole sale or the vacuum breaking device and the valve body are sold individually.

Abstract: A dosing pump, in particular a microdosing pump, has a pump chamber in which a fluid inlet is provided at a first valve seat and a fluid outlet is provided at a second valve seat. A control element is coupled to an actuator to move the control element in order to vary the pump chamber in terms of volume. The control element is movably mounted by means of a flexure hinge.

Abstract: A valve block includes a fluid-transfer plate with multiple inlet bores connecting to a common inlet channel, and multiple outlet bores connecting to a common outlet channel. The inlet bores and the outlet bores are arranged in a curved shape. The valve block also includes a pressure plate and diaphragm aligned and connected to the fluid-transfer plate in a way that allows pressurized material in the pressure plate to control the state of the channels formed by the inlet and outlet bores.

Abstract: An enclosure containing an inerting gas and at least one liquid to be discharged. This enclosure comprises at least one orifice positioned in its lower part and a liquid discharging system positioned at the orifice. This liquid discharging system is configured to take up a closed state and an open state in which the system allows the liquid to flow towards the outside of the enclosure and includes at least one element that is elastically deformable depending on the pressure inside the enclosure and, depending on its deformation, controls the open or closed state of the liquid discharging system. This solution makes it possible to achieve simple and automatic regulation of the volume of the liquid in the enclosure, without a sensor. An aircraft including at least one such enclosure is also provided.

Abstract: Provided is a valve module that includes a movable member and a support member. The movable member is constituted by a film elastically deformable by a fluid and having a first surface positioned on a side of a member having an opening through which the fluid passes and a second surface on a side opposite to the first surface. The support member has higher rigidity than rigidity of the movable member, covers a part of a region of the second surface, in which the opening is not located as viewed in a direction perpendicular to the second surface, and is fixed to the member.

Abstract: A manufacturing method is provided for a fluid control apparatus, in which the flow of a fluid is controlled by bringing a diaphragm valve element into contact with or separating the diaphragm valve element from a valve seat. The diaphragm valve element may be a joint body that is a combination of (a) a seat member that makes contact with the valve seat and (b) a body member. The joint body is formed by machining a material joint body obtained by welding together a seat-member material which is a material for the seat member and a body member material which is a material for the body member. The welding is performed on contact faces of the seat-member material and the body-member material of the material joint body in a range wider than contact faces of the seat member and the body member of the joint body.

Abstract: A valve with an internal member is disclosed which allows exhaled carbon dioxide to escape from a breathing circuit when the circuit gas pressure drops below a threshold pressure. The valve operates by occluding one or more ports under a relatively high pressure and opening the one or more ports under a relatively low pressure. The internal member is attached to the body of the valve at two or more locations on the internal member. The internal member moves in a direction perpendicular to the gas flow through the valve.

Abstract: A medicament delivery device comprising a housing connected to a base and enclosing an interior, the interior having a fluid channel wherein the fluid channel passes from a first position in the interior, to a second position outside the interior, and to a third position in the interior.

Abstract: A check valve, including a valve and a valve support surface, to permit a fluid to move through the check valve in a first direction and resist a fluid flow through the valve in a second direction, the valve having a valve diaphragm and an isolating bridge, with a portion of the valve engaging against valve support surface to resist deformation or stretching of the valve when a backflow of fluid into the check valve occurs. The valve support surface having a first surface portion and a second surface portion, and the valve positioned with the valve diaphragm spaced apart from the first surface portion, and the isolating bridge spaced apart from the second surface portion.

Abstract: A pressure safety device is used with a bag valve mask (BVM) for preventing over-pressurization. The BVM includes a bag assembly having a bag connector for detachably mating to a mask connector on a patient mask. The pressure safety device has a housing with a bag port, a mask fitting, and a flow path from the bag port to the mask fitting. The bag port detachably connects to the bag connector on the BVM, and the mask fitting detachably connects to the mask connector on the BVM. The pressure safety device includes an automatic flow reduction valve located on the flow path in the housing and impedes flow when pressure on a bag connector side of the valve exceeds a maximum threshold value.

Abstract: A valve for controlling delivery of fluid includes a valve seat comprising a fluid inlet, a fluid outlet, a well having a passage, and a valve membrane comprising a conical portion having a base and a tip. The conical portion is configured to fit within the passage of the valve seat. The valve membrane is configured to fluidly connect the fluid inlet to the fluid outlet when the valve membrane is in an undeformed position and fluidly disconnect the fluid inlet from the fluid outlet when the valve membrane is in a radially deformed position.

Abstract: Described is a dispenser for dispensing a fluid contained in a plastic bottle, including a ring nut having a cylindrical conduit for sucking the fluid; a concertina-like deformable element including side walls defining a dosing chamber; a ring identifying with the ring nut a locking system defining an operating and non-operating configurations; a dispensing head, which can be pressed by a user and having a collection chamber collecting the fluid flowing from the dosing chamber through a central opening of the ring; first and second shutoff elements defining, respectively, a check valve at the inlet and a check valve at the outlet of the dosing chamber; a locking element interfering with at least one between the first and the second shutoff elements to lock it in the fixed position and thereby occlude the suction conduit and/or the central opening in a stable manner at least in a dispensing configuration.

Abstract: A pressure gauge and/or relief valve which may be used in a single-use fluid system, such as a sterilizable fluid system. The pressure gauge and/or pressure relief valve may be configured to measure and to relieve fluid within a fluid-containing structure, the pressure gauge relief valve including a housing having a first end, a second end, and an inner surface defining a passage between the first end and the second end, a movable element movable within the passage, wherein the housing first end is configured to be coupled with a fluid-containing structure, the housing second end is spaced from the housing first end; and the movable element is movable with respect to the housing to indicate pressure therein and to allow fluid to pass between the movable element and the inner surface of the passage at a selected pressure.

Abstract: An annular filter element and sealing element for an oil separator of a crankcase ventilation system, the filter element has a covering surface extending parallel to a direction of flow, together with at least one cover element covering surface in at least some regions. An oil separator is taught having the filter element with at least one pressure control valve controlling crankcase pressure and has a valve closing body that operates in conjunction with a valve seat. The sealing element having at least one radially sealing region that is configured to act in the direction of the radius of the annular filter element, and at least one axially sealing region that is configured to act in the direction of the longitudinal axis of the annular filter element.

Abstract: An apparatus may be provided that includes a substrate having one or more microfluidic valve structures. The valve structures are non-elastomeric, non-polymeric, non-metallic membrane valves for use in high-vacuum application. Such valves are functional even when the fluid-control side of the valve is exposed to a sub-atmospheric pressure field which may generally act to collapse/seal traditional elastomeric membrane valve.

Abstract: A check valve, including a valve and a valve support surface, to permit a fluid to move through the check valve in a first direction and resist a fluid flow through the valve in a second direction, the valve having a valve diaphragm and an isolating bridge, with a portion of the valve engaging against valve support surface to resist deformation or stretching of the valve when a backflow of fluid into the check valve occurs. The valve support surface having a first surface portion and a second surface portion, and the valve positioned with the valve diaphragm spaced apart from the first surface portion, and the isolating bridge spaced apart from the second surface portion.

Abstract: The invention discloses a flow controller and a bubbler. The flow controller comprises a shell and a sheet part, wherein a water outlet is formed in the bottom of the shell, the top of the shell is open, a water space is formed between the sheet part and the bottom of the shell, the sheet part covers the water outlet, elastic legs are disposed on the sheet part and include at least two support legs and at least one suspension leg, and the sheet part is supported at the bottom of the shell through the support legs, and the suspension leg is spaced apart from the bottom of the shell. The sheet part provided with the elastic legs is used to resist the water pressure, the water pressure-bearing capacity of the sheet part is improved, and the service life of the sheet part is guaranteed.

Abstract: A vehicle drivetrain includes a driveshaft, a driveshaft joint and a boot. The driveshaft joint is configured to be coupled to an end of the driveshaft. The boot is disposed over the driveshaft joint. The boot has an inner wall and an outer wall. The inner and outer walls are separated by an empty space.

Abstract: Embodiments of air admittance valve assembly and plumbing system incorporating the same are provided herein. In some embodiments, a valve assembly to allow or stop a flow for use with enclosed environment includes a housing having, an inlet disposed at a first end of the housing fluidly coupled to environment surrounding housing, an outlet disposed at a second end of housing fluidly coupled to enclosed environment, and an interior volume divided into a first zone, a second zone, and a third zone; a first valve having a first valve seat and a first sealing member urged by an existing force between a closed or open position; and a second valve having a second valve seat and a second sealing member urged by an existing force between a closed or open position.

Abstract: In some embodiments, apparatuses and methods provided herein are useful for dispensing a fluid, such as a thixotropic fluid. In some embodiments, a bottle having a closure cap includes a flip top, a base, and a disk, where the base and disk define a mixing chamber configured to facilitate mixing of any serum or liquid separated from the fluid back therein. In some configurations, the base has a central opening through which the fluid exits and an internal shaft with a non-planar end surface opposite the central opening. In some configurations, the non-planar end surface and the disk define channels between the mixing chamber and the internal shaft. In some embodiments, the disk includes a central opening, a plurality of partial annular openings through a planar surface of the disk, and projections extending into the mixing chamber.

Abstract: A micro check valve includes a substrate body having a top side and an underside, at least the top side having a sealing bar between a first trough and a second trough. The substrate body also has a passage which leads from the underside of the substrate body to the top side of the substrate body and ends on the top side of the substrate body in the first trough. In addition arranged on the top side of the substrate body is a diaphragm which is mounted flexibly at least in the region of the sealing bar and the first and second troughs. The diaphragm also has at least one through opening arranged above the second trough.

Abstract: Air injectors are provided for conveying fluid and/or gas (e.g., air) into the fluid of a bathing apparatus. The air injectors can include a component for attachment to an outside surface of the bathing apparatus that can be hidden from the view of a user and another component for attachment to a source of the fluid and/or gas (e.g., air). The two components can be connected together for use or disconnected for servicing and cleaning the injectors, as well as servicing a check valve or the injectors.

Abstract: A valve assembly for a tire pressure management system includes a housing. A first chamber (32) is provided in the housing. A second chamber (38) is provided in the housing. The second chamber is selectively in fluid communication with the first chamber. A third chamber (44) is provided in the housing. The third chamber is selectively in fluid communication with the second chamber. A deflate piston (120) is at least partially provided in the third chamber and the second chamber. The deflate piston (120) selectively permits or prevents fluid communication between the second chamber and the third chamber. An inflate piston (72) is attached to the deflate piston (120). The inflate piston (72) is at least partially provided in the second chamber and the first chamber. The inflate piston (72) selectively permits or prevents fluid communication between the first chamber and the second chamber.

Abstract: A container insert is disclosed for use with a closed loop dispensing system. The container insert is press-fitted into the throat of a liquid container. The container insert is comprised of a plastic substrate portion and an over-molded portion. This invention is directed to the method of simultaneously molding the plastic substrate portion and the over-molded portion.

Abstract: A unit for regulating or controlling a fluid pressure of a fluid has a housing with at least one housing part and an inlet and an outlet for the fluid. A switching film is connected to the housing part and switches at pressure differences of 1 to 250 mbar relative to an ambient pressure acting on the switching film. The switching film regulates, releases or blocks a flow of the fluid between the inlet and the outlet for the fluid. The switching film is made of thermoplastic synthetic material. An opening cross section of the housing part is closed off by the switching film. In a method for fluid-tightly connecting a switching film to a housing part of the unit, a radial outwardly positioned joining region of the switching film is fluid-tightly pressed against the housing part in the region of joining surface.

Abstract: A connector mountable to a syringe barrel has a proximal barrel-engaging portion, a distal luer fitment portion, and a fluid aperture therethrough. The barrel-engaging portion of the connector includes an axial ledge configured to abut the axial distal edge of a glass syringe barrel. The connector facilitates mounting a luer assembly to the barrel. The luer assembly may be a tip cap having a complementary luer fitment for connection to the luer fitment portion of the connector. The luer assembly may be a luer needle assembly having a complementary luer fitment for connection to the luer fitment portion of the connector. The connector and syringe may further include an immobile, compressible needle seal. The needle seal is adjacent to or engageable with the barrel-engaging portion of the connector. The syringe may be configured with a plunger capable of engaging a retractable needle.

Abstract: A tire inflation system safety valve includes at least an air line disposed between a rotary union and a tire communicating with an axle supporting a hubcap, the rotary union axially aligned with the axle and mounted to the hubcap. The air line facilitating pressurized air transferred between the rotary union and the tire. The tire inflation system safety valve including at least a valve housing providing a valve activation chamber, a fluid conduit, supported by the valve housing, having a downstream end and an upstream end and in fluid communication with the valve activation chamber, and a diaphragm disposed within the valve activation chamber and communicating with the fluid conduit. The diaphragm, in response to the pressurized air of a predetermined pressure, automatically precludes air transfer between the upstream end of the fluid conduit and the downstream end of the fluid conduit.

Abstract: A one-way valve, comprises a valve housing; a valve member provided within the valve housing, the valve member being operative to open and close the valve and comprising a diaphragm with a central orifice to allow fluid to pass from one side of the diaphragm to the other; a valve inlet provided on a first side of the diaphragm; and a valve outlet provided on a second side of the diaphragm; wherein the configuration of the diaphragm and the valve housing biases the diaphragm to seal the inlet at rest.

Abstract: An illumination device having a pole mount, a light support that extends from the pole mount, a lighting unit is connected to the pole mount, and a solar panel assembly is mounted to the lighting unit. In another embodiment an illumination apparatus is provided having a pole mount and a lighting assembly, and the pole mount has a first clamp half and a second clamp half. In another preferred embodiment there is flexible lighting assembly comprising a mount that is connected to a slider bar that supports a slider. A light support arm is supported on the slider and the light support arm connects to a central support member. A flexible member extends from the central support member to a telescopic lighting assembly having a light-generating device. A solar unit is connected to the slider bar and is wired to and powers the light-generating device.

Abstract: The present invention describes a valve for controlling the passage of a microfluidic system. Said valve comprises a first valve element (103) and a second valve element (104, 105) with respective first and second contact surfaces which are placed opposite to each other in such a way as to control a fluid flow through said passage. Said first valve element comprising a flexible part and a rigid part.

Abstract: Provided herein is a degassing valve for a foodstuff product including a valve body, a one-way valve element positioned on the valve body, and a filter associated with said valve body wherein the filter is configured to facilitate the passage of a gas. The gas may be selected from the group consisting of carbon dioxide, oxygen, nitrogen, and methane. Additionally, the gas may be a longer molecular chain gas that comprises the aroma of the product. The filter of the valve body may include activated charcoal, an activated charcoal mixture or a combination thereof. In some embodiments, the foodstuff product comprises breadcrumbs, spices, or other flavorful dry foods, the aroma(s) of which can provide an important marketing benefit.

Abstract: The invention pertains to a one-way valve 1, especially for medical use, comprising at least one valve housing, an inlet 22, an outlet 26, and a valve element consisting of a valve body 20 and a valve seal 16. To it make possible for the one-way valve 1 to function reliably even in the case of liquids containing dietary fiber and for the tubing assembly to be filled rapidly, it is provided according to the invention that the valve body 20 comprises a passageway 21, which opens out into a sealing cavity 23 between the valve body 20 and the valve seal 16, and that the valve seal 16 comprises an opening 39, which can be closed in such a way by the valve body 20upon relative movement of two housing parts 2, 3 that the valve seal 16 rests with a sealing lip 28 against the valve body 20.

Abstract: A check valve suitable for use with IV sets and the like provides an upstream filter preventing contamination from affecting the sealing of the check valve membrane. The filter may employ filter media that is integrally bonded to the housing of the filter providing simple and robust construction.

Abstract: An oil pipe female coupler includes a body, a sealing member, and an oil seal. The body includes a flange having an upwardly projecting annular wall. The sealing member includes an inner annular wall defining a receiving portion, an outer annular wall surrounding the inner annular wall, and a receiving groove between the inner annular wall and the outer annular wall. The oil seal includes an annular ring having a through-hole, an annular wing connected to the annular ring, and an annular block connected to the annular wing. Top and bottom faces of the annular wing tightly abut a bottom face of the inner annular wall of the sealing member and a top face of the second protrusion, respectively. An inner wall face of the annular block tightly abuts an outer wall face of the inner annular wall of the sealing member. A leakage prevention effect is reliably provided.

Abstract: Apparatus, including a diaphragm valve, is provided featuring a valve body, a diaphragm, a pressure ring, and at least one elastomeric member. The valve body may include a circumferential flange. The diaphragm may include a circumferential gasket portion configured to be seated on the circumferential flange so as to form a joint between the valve body and the diaphragm. The pressure ring may include concentric fluctuations, and may be configured to apply a sealing force against the joint so that the concentric fluctuations prevent radial movement of the circumferential gasket portion and the circumferential flange. The elastomeric member may be configured to respond to a compressive force and provide a substantially constant sealing force, transmitted through the pressure ring, regardless of small variations in the thickness or material dimensions of the circumferential gasket portion caused by temperature fluctuation or material flow and age.

Abstract: A barrel adjustment and retaining assembly includes a barrel body having an end surface, a seat body having a protrusion, a limiting component and an adjustment barrel. The seat body is movable relative to the barrel body. The protrusion is moved toward the end surface when the seat body moves from a pre-assembly position to an assembly position. The limiting component is clamped between the protrusion and the end surface to deform such that an outer diameter of the limiting component is increased when the seat body moves from the pre-assembly position to the assembly position. The adjustment barrel is sleeved slidably on the barrel body. The clamped limiting component is confined within a hole portion of the adjustment barrel.

Abstract: An automatic water shut-off valve for low pressure includes: a body having a nipple formed at a lower portion thereof; a rubber diaphragm inserted into a protruding threaded pipe formed at an outside portion of the body; and a pressure supporter pressurizing the rubber diaphragm, wherein the pressure supporter has a drain hole and the fixing cap has a cap drain hole, so that the fluid is drained through a fluid flow hole of the rubber diaphragm in the case of compressible air fluid or at pressure lower than set pressure and is stopped when the fluid switching face of the rubber diaphragm is grounded to a fluid stop protrusion of the pressure supporter in the case of incompressible fluid or at pressure higher than set pressure.

Abstract: A gas regulator includes a valve block, a pressure regulating assembly, and a metal coil. The valve block includes an input gateway, an output gateway, and a pressure reducing chamber. The metal coil is provided in the pressure reducing chamber. The pressure regulating assembly includes a membrane provided in the pressure reducing chamber, a movable member connected to the membrane, and a shielding member connected to the movable member, wherein the movable member has a magnetic element received in the metal coil. The membrane deforms with gas pressure changes of a connected gas source, and makes the movable member move the shielding member to change an output gas flow of the input gateway. The magnetic element is then moved relatively to the metal coil to generate an induced emf, which precisely indicates the gas pressure changes of the gas source.

Abstract: A valve for reducing the likelihood of ice-related blockage in a fuel cell and methods for starting a fuel cell system. The valve includes a valve plate and coupling plate that are cooperative with one another within a valve body such that flexural forces imparted to the valve plate from a pressurized fluid are transferred to localized contact surfaces between the valve plate and coupling plate. By concentrating these forces to such a localized area, improvements in the ability of the fluid to initiate and propagate a crack in built-up ice around the valve's seating region is improved. In this way, fuel cell starting in cold conditions—such as those associated with temperatures at or below the freezing point of water—is also improved.

Abstract: In a fluid control device, a check valve includes a first valve housing and a first diaphragm. The first diaphragm defines a first valve chamber and a second valve chamber. An exhaust valve includes a second valve housing and a second diaphragm. The second diaphragm defines a third valve chamber and a fourth valve chamber. The check valve is opened and closed by a difference in pressure between the first valve chamber and the second valve chamber. The exhaust valve is opened and closed by a difference in pressure between the third valve chamber and the fourth valve chamber.

Abstract: A valve assembly for a tank of a vehicle and a method of creating a vacuum are disclosed. A valve body defines a cavity and an outlet in fluid communication with the cavity for venting the tank. The assembly includes a seat disposed in the cavity of the valve body. The seat separates the cavity into first and second cavity portions. The seat defines an aperture to provide fluid communication between the first and second cavity portions. The assembly includes a cover device disposed between the seat and the outlet. The cover device defines at least one hole therethrough. The cover device is movable between a rest position engaging the seat to minimize fluid communication between the aperture and the hole and an actuated position spaced from the seat to increase fluid communication between the aperture and the hole when a vacuum is created in the first cavity portion.

Abstract: The valve includes a body, a seat and a flexible membrane capable of being urged against the seat, while plugging passage ports of this seat. The passage ports have each an oblong shape and are arranged with their greatest dimensions oriented along radial directions of the seat. Applications: check valve or flow control valve for gaseous fluids, in particular in the automotive field.

Abstract: A relief valve (60) for a liquid container, the valve comprising a substantially conical body (50) extending into the container, and tapering inwardly away from an external wall of the container, at least one air inlet passage (62) through the substantially conical body; and a flexible diaphragm (53) extending over the conical body, being attached at its outer periphery around the substantially conical body and having a central opening surrounding the substantially conical body above the air inlet passage so as to seal the air inlet passage until the pressure within the container falls below a predetermined level.

Abstract: In order to make it possible to increase a diameter and output thereof, a diaphragm structure is provided that has low repulsiveness, can be largely deformed to increase a stroke even without being applied with a large force from an actuator, and is unlikely to give rise to a defect or fault even when formed thin, and a fluid control valve is provided with the diaphragm structure and the actuator that presses the diaphragm structure, wherein the diaphragm structure is provided with: a protruding part that is formed in a tubular shape and pressed by the actuator; a brim part that spreads from a base end of the protruding part outward with respect to the protruding part; and a support part that is formed on an outer circumference of the brim part and attached to another member, and the brim part is formed in a film shape.

Abstract: A one-way valve, comprises a valve housing; a valve member provided within the valve housing, the valve member being operative to open and close the valve and comprising a diaphragm with a central orifice to allow fluid to pass from one side of the diaphragm to the other; a valve inlet provided on a first side of the diaphragm; and a valve outlet provided on a second side of the diaphragm; wherein the configuration of the diaphragm and the valve housing biases the diaphragm to seal the inlet at rest.

Abstract: A flexible and restorable container main body for housing a medicinal solution. A stopper member is fixed in an inside of a medicinal solution passage that communicates with the container main body for discharging the medicinal solution when the container main body is pressed and deformed. A pressure valve is arranged in the medicinal solution passage at a downstream side in the medicinal solution discharge direction further than the stopper member and is formed with an opening having a circular cross section which contacts a tip portion of the stopper member. A biasing member is provided at a downstream side for biasing the pressure valve in a direction opposite to the medicinal solution discharge direction by abutting against a peripheral portion of the opening of the pressure valve.

Abstract: Microscale valves for use in, e.g., micropump devices, may be formed of a slitted diaphragm bonded to the interior of a valve tube. A bump in the diaphragm and/or a backward-leakage stopper may increase the breakdown pressure of the valve. A push-rod may be used to pre-load the valve membrane to thereby increase the cracking pressure.

Abstract: A valve device of a compressor of the present invention comprises a plate (17), a reed (21, 75), and a stopper (31), wherein the reed includes: an opening/closing section (60, 70), a fastened section (61, 71); and a joining section (62, 72), the opening/closing section, the fastened section and the joining section being arranged in a direction in which a symmetric axis extends; wherein in a portion of the joining section which is closer to the opening/closing section, a pair of portions (102, 112, 82, 86) of an outer periphery of each of one or two openings (63, 65, 73, 77) which are closest to both ends of the joining section are symmetric with respect to the symmetric axis so as to form a substantially-V-shape or substantially-U-shape, in a direction from the opening/closing section toward the fastened section; and in a portion of the joining section which is closer to the fastened section, a pair of portions (103, 113, 83, 87) of the outer periphery of each of one or two openings which are closest to the b