Abstract: A photocatalyst including, as an active component, a reaction product obtained by mixing a reducing organic substance having iron-reducing ability or a feedstock for supplying the reducing organic substance with an iron-supplying source in the presence of water, in which the reaction product exhibits a photocatalytic activity when irradiated with light having a wavelength of ultraviolet light, visible light, or infrared light. An organic substance degradation method or a sterilization method including bringing the photocatalyst into contact with an object to be degraded or an object to be sterilized and irradiating the photocatalyst with light having a wavelength of ultraviolet light, visible light, or infrared light.

Abstract: A method for synthesising esters from alcohols by dehydrogenating coupling in the presence of a catalyst of formula 1 as well as to the use of catalysts of formula 1 for synthesising esters. The method according to the invention can be used in particular for the production of dihydrogen. The invention also relates to novel catalysts as well as to the uses thereof.

Abstract: A honeycomb catalyst for exhaust gas purification comprising a honeycomb body, the honeycomb body comprising: a fraction acting as a pollutant trap and/or having a catalytically active fraction based on a catalytically active system comprising a base metal; and a catalytically inactive fraction, wherein the catalytically inactive fraction comprises at least one thermally stable sulphate or sulphide component for reducing thermally induced shrinkage of the honeycomb body.

Abstract: A honeycomb structural body 20 comprises a porous partition portion 22 which forms a plurality of cells each functioning as a flow path of a fluid, and in the partition portion 22, the average pore diameter is 10 to 20 ?m, and a wet area rate R (=S/V) which is the rate of a wet area S of pores to a volume V of the partition portion 22 is 0.000239 ?m?1 or more.

Abstract: The present invention relates to a method to synthesize ammonia at moderate conditions. The present invention also relates to a new chemical reactor configuration to achieve ammonia synthesis at moderate pressures and temperatures, and methods to make membranes for use in ammonia synthesis.

Abstract: A catalyst is recovered from an aqueous reaction mixture comprising heterocyclic nitroxyl catalyst and oxidized cellulose, by: —separating the oxidized cellulose from the reaction mixture, —contacting the reaction mixture with solid hydrophobic adsorbent particles with particle sizes below 350, preferably below 200 ?m, more preferably below 100 ?m, said particles being silica particles provided with functionnalized hydrophobicity, —adsorbing the catalyst to the hydrophobic adsorbent particles, and—eluting the catalyst from the adsorbent particles with an organic solvent.

Abstract: This disclosure provides systems, apparatuses, and methods for liquid transfer and performing reactions. In one aspect, a system includes a liquid transfer device having a housing having a pipette tip and a plunger assembly; and a reaction chamber, wherein the housing of the liquid transfer device is configured to sealably engage with the reaction chamber. In another aspect, a liquid transfer device including a housing having a pipette tip; and a plunger assembly disposed within the housing and the pipette tip, wherein a portion of the plunger assembly is configured to engage a fluid reservoir such that the plunger assembly remains stationary relative to the fluid reservoir and the housing moves relative to the plunger assembly.

Abstract: An apparatus for dispensing droplets comprises a dispensing tip (2, 190, 210) with an orifice (4) having a cross sectional area in the range of 0.00002 mm2 to 0.03 mm2. An actuator assembly (13-15, 50, 80) comprising an actuator element engages with and disengage from the tip and, when engaged, couples acoustic energy to liquid in the tip to expel the liquid through the orifice as a droplet. The actuator assembly includes one or more piezo elements, which may be in the form of piezo stacks. In some embodiments, the actuator assembly comprises a plurality of jaws (51, 52, 61) adapted to move to engage with the dispensing tip for dispensing. This allows side loading of the tip (180) followed by movement of the actuator assembly (153) to engage the tip (180).

Abstract: A pipette is described having a tube, a pressure mechanism, and at least one reagent pad. The tube has a first end, a second end opposite the first end, and a sidewall extending between the first end and the second end, with the sidewall defining an interior cavity. The pressure mechanism is operably connected to the first end of the tube and is configured to enable a sample to be drawn into the interior cavity of the tube through the second end of the tube. The at least one reagent pad is positioned in the interior cavity of the tube and within a predefined liquid path whereby the sample contacts at least a portion of the at least one reagent pad when drawn into the interior cavity. In another embodiment, a pipette is described having a tube, a pressure mechanism, and a capillary positioned within the tube.

Abstract: A microchip comprises a PCR section, a denaturing section, and an electrophoresis section. In the PCR section, a desired region in DNA is amplified. In the denaturing section, PCR amplicon of double-strand DNA is denatured into single-strand DNA. In the electrophoresis section, the PCR amplicon is separated based on the length of sequence.

Abstract: The present invention relates to a micro chamber plate, and more particularly, to a micro chamber plate having micro chamber holes formed using a flowable film. Thus, samples can be injected into the micro chamber holes in a smoother manner compared to when samples are injected using a vacuum and/or centrifugal force. In addition, bubbles and excess samples in the micro chamber holes can be efficiently discharged, making it possible to perform reaction and analysis in a more accurate and efficient manner.

Abstract: A device is described having a first surface having a plurality of first areas and a second surface having a plurality of second areas. The first surface and the second surface are opposed to one another and can move relative to each other from at least a first position where none of the plurality of first areas, having a first substance, are exposed to plurality of second areas, having a second substance, to a second position. When in the second position, the plurality of first and second areas, and therefore the first and second substances, are exposed to one another. The device may further include a series of ducts in communication with a plurality of first second areas to allow for a substance to be disposed in, or upon, the plurality of second areas when in the first position.

Abstract: A system that includes a cartridge housing and a hollow transfer module, according to an embodiment is described herein. The cartridge housing further includes at least one sample inlet, a plurality of storage chambers, a plurality of reaction chambers, and a fluidic network. The fluidic network is designed to connect the at least one sample inlet, a portion of the plurality of storage chambers and the portion of the plurality of reaction chambers to a first plurality of ports located on an inner surface of the cartridge housing. The hollow transfer module includes a second plurality of ports along an outer surface of the transfer module that lead to a central chamber within the transfer module. The transfer module is designed to move laterally within the cartridge housing. The lateral movement of the transfer module aligns at least a portion of the first plurality of ports with at least a portion of the second plurality of ports.

Abstract: A microfluidic cartridge, configured to facilitate processing and detection of nucleic acids, comprising: a top layer comprising a set of cartridge-aligning indentations, a set of sample port-reagent port pairs, a shared fluid port, a vent region, a heating region, and a set of Detection chambers; an intermediate substrate, coupled to the top layer comprising a waste chamber; an elastomeric layer, partially situated on the intermediate substrate; and a set of fluidic pathways, each formed by at least a portion of the top layer and a portion of the elastomeric layer, wherein each fluidic pathway is fluidically coupled to a sample port-reagent port pair, the shared fluid port, and a Detection chamber, comprises a turnabout portion passing through the heating region, and is configured to be occluded upon deformation of the elastomeric layer, to transfer a waste fluid to the waste chamber, and to pass through the vent region.

Abstract: The present invention provides microfabricated substrates and methods of conducting reactions within these substrates. The reactions occur in plugs transported in the flow of a carrier-fluid.

Abstract: Embodiments of the disclosure provide a closed system chemical handling and delivery system comprising an enclosure having a sealable opening accommodating the ingress and egress of chemical containers with an interior of the enclosure, a glove opening formed in the enclosure to which a glove is attached to and extends into the interior of the enclosure, a viewing window coupled to the enclosure providing a view into the interior of the enclosure, a chemical delivery drain in fluid communication with the interior of the enclosure, and a mixing valve in selective fluid communication with the chemical delivery drain.

Abstract: Provided herein are pipette tip racks, and in particular, pipette tip rack plates that restrict lateral displacement of pipette tips loaded therein.

Abstract: A jaw crusher including a fixed jaw and a movable jaw for forming a crushing chamber therebetween which is open at the top, the fixed jaw including a first wear part mounted thereto and the movable jaw including a pitman and a second wear part mounted thereto. The crushing chamber includes an upper section, a middle section, and a lower section having equal heights (h). The pitman is bearing-mounted to an eccentric shaft and to at least one slide member. The at least one slide member is configured to slide in a direction substantially perpendicular to the vertical diagonal of the crushing chamber. A method for crushing mineral material in a jaw crusher or a crushing plant is also disclosed.

Abstract: The present invention relates to a cone crusher wear liner to crush feed materials (5) such as minerals, rocks, or the like, comprising, a stationary bowl liner (10) is a downward curvature element with double open ends, to allow feed material (5) to be fed thereabove, comprising an inner circumferential crushing surface (14) comprising a plurality of crushing protrusions; a gyrating mantle liner (20) is a downward curvature element with double closed ends, gyrating at axial axis at an off-set angle to enable said feed materials (5) between said pre-set gap (15) to be crushed to a smaller portion by said plurality of crushing protrusions (30).

Abstract: A gyratory crusher spider bushing assembly is positionable radially intermediate a topshell spider and a crusher main shaft. The assembly includes a main body to which is attached a radially inner annular wear collar. The collar is formed from a material having enhanced wear resistance than the material of main body.

Abstract: The present invention relates to a radial frame as a radial force-receiving element of a machine frame of a two-roller press with a fixed roller and a loose roller, comprising two opposing side parts, each with a belt system with belts and box frame as a frame top part and as a frame bottom part, with vertical frame end pieces inserted left and right into the frame upper part and frame lower part which frame end pieces are constructed to be detachably fixed on the fixed roller side as replaceable end pieces and on the loose roller side with the same construction. The vertical frame end pieces are connected at their upper end to a rotary articulation and the particular double belts running in parallel comprise welded head connections at their ends on which head connections the vertical frame end pieces (vertical crossbeams) are supported.

Abstract: A distributor plate assembly for a vertical shaft impact (VSI) crusher is optimized for abrasion wear resistance. The distributor plate includes a plurality of plate segments, each segment being formed from a main body of ductile iron alloy having cemented carbide granules embedded within the iron alloy.

Abstract: A thermoplastic pelletizer providing enhanced pellet yields with reduced fines contamination. The pelletizer includes a cutting rotor and a feed assembly for feeding plastic to the cutting rotor. The pelletizer further includes two chutes—a first chute arranged to collect pellets, and a second chute arranged to collect fines. A vacuum is drawn on both chutes to assist in the collection of both pellets and fines in their respective chutes. Compressed air is directed past the cutting rotor to the first chute to assist in moving pellets from the cutting rotor to the first chute.

Abstract: A device for shredding material has a shredding rotor, which revolves about an axis of rotation and supports at least one blade, and a first counter-blade which cooperates with the blade of the shredding rotor. A feed plate is provided here, which is mounted to be rotatable about a pivot axis and which is connected to an actuator, in particular to an electric motor, so that, with the aid of the actuator, the feed plate can be brought into a feed position, in which the material to be shredded can lie on a first main surface of the feed plate and can slide along this in the direction of the shredding rotor, and into a first pressing position in which the material to be shredded is likewise pressed with the first main surface of the feed plate against the shredding rotor and shredded between the blade and the first counter-blade.

Abstract: An underground mobile sizer includes a frame, a crawler coupled to the frame and operable to move the underground mobile sizer, a feeder coupled to the frame and configured to receive a material, and a crusher coupled to the frame and operable to reduce a size of the material received by the feeder. The feeder further includes a conveyor operable to move the material towards the crusher. The conveyor includes a first end, a second end adjacent the crusher, and a screen section located between the first and second ends. The underground mobile sizer also includes a belt conveyor positioned beneath the screen section and the crusher. The belt conveyor is configured to receive material that travels through the screen section and the crusher, wherein material below a predetermined size passes through the screen section to the belt conveyor without passing through the crusher.

Abstract: A closed-circuit grinding plant for grinding fresh material, comprising a first device for grinding the fresh material, a static pre-classifier preclassifying the ground material, having an input for the ground material, an output for a coarse meal fraction, and a further output for a fine-grained output material. A device separates out fine material, having an output for a coarse-grained fraction, with subsequent recirculation to the first grinding device, an output for fine material, and at least one input. The input is connected to the static pre-classifier output. A second grinding device is also provided. The static pre-classifier is a cascade classifier and the second grinding device is a ball mill The ball mill has a material inlet connected to the output opening for the coarse meal fraction of the cascade classifier and a material outlet connected to an input opening of the device for separating out fine material.

Abstract: A dry-wet combined sorting system for municipal solid waste comprising a dry type smashing and winnowing device and a wet type water sorting device. The system is compact in structure; smashing knives with different revolving speeds and the same revolving direction are provided, thereby enabling continuous processing of the system which is high in processing efficiency and simple in operation; meanwhile, multiple protection devices are provided, so that the whole system is safe and reliable; perishable organic matters, light combustible matters and inorganic matters can be separated completely; the light combustible matters are picked out by the dry type smashing and winnowing device, which ensures their low water content and facilitates their subsequent energy-oriented utilization. Therefore, the municipal solid waste is into valuable thing for it can be utilized sufficiently as a resource, and the system has very high environmental benefits and social benefits.

Abstract: A magnetic density separator includes a process channel, a magnetization device, a laminator, and a feed including an entraining device. The process channel may permit magnetic process liquid and particles to be separated to flow through in a flow direction. The magnetization device may be arranged to extend in flow direction along at least one of the walls of the channel and to apply a magnetic field to the process liquid in a separation zone of the channel to establish a cut density of the magnetic process liquid to separate the particles in the process liquid based on their density. The laminator may be configured to introduce magnetic process liquid into the channel to flow laminarized in flow direction along the separation zone. The feed may introduce a mixture of process liquid and particles to be separated into the process channel to join the laminarized process liquid.

Abstract: An electrostatic precipitator structure includes a dielectric plate arranged between two collecting electrode plates, which define an air flow channel. The dielectric plate divides the air flow channel into two sub-channels. A plurality of discharge wires are attached on in the upper and lower surfaces of the dielectric plate for generating corona discharge in the sub-channels. When a gas with particles passes through the sub-channels, the particles are charged by the ions produced by corona discharge and then migrate to the collecting electrode plates by electrostatic force. This electrostatic precipitator structure may avoid intensive particle contamination on the discharge wires, wherefore particle collection efficiency is enhanced. Further, due to the insulating dielectric plate immobilize the attached ions, the corona current and the ozone concentration is reduced, wherefore power efficiency is enhanced.

Abstract: Devices and methods for washing a suspension of cells are provided. The devices include concentric center, intermediate, and outer compartments. The center compartment and the intermediate compartment are in communication with each other by a first valve and the intermediate and outer compartments are in communication with each other by an opening, aperture, or second valve. The methods include loading a suspension of cells into the center compartment, loading a wash solution into the intermediate compartment, and rotating the device. Centripetal force forces cells through the wash solution and into the outer compartment, where they are isolated and collected.

Abstract: The present invention provides a hybrid centrifugal filter including: a casing having a fluid inlet and a fluid outlet; a shaft vertically disposed in the casing and guiding fluid, which flows inside through the fluid inlet, into the casing; a stand tube being rotatable about the shaft and injecting fluid flowing in the casing through the shaft; a rotor disposed in the casing to form a space for filtering the fluid injected from the stand tube by rotating with the stand tube, and having nozzles injecting the filtered fluid into the casing; and a filtering unit elongated in a longitudinal direction of the shaft, disposed in the rotor to divide an inside of the rotor into an upper space and a lower space, and having a plurality of fluid holes for guiding the fluid injected in the upper space from the stand tube into the lower space.

Abstract: The invention relates to a method for the operation of a laboratory centrifuge (1), wherein a rotor (2) rotates around a horizontal rotational axis (3). It should be avoided that during the start-up of the laboratory centrifuge (1) or the deceleration of the laboratory centrifuge (1) for small angular velocities and small centrifugal forces resulting therefrom due to the gravitational acceleration the product (6) is biased by resulting components of the acceleration in vertical direction which change their sense of direction. For this purpose the acceleration of the rotor (2) is chosen such that when arriving for the first time in a reversing angular position (twelve o'clock position) there is already a centrifugal acceleration being larger than the gravitational acceleration. The corresponding applies for the deceleration of the rotor after the centrifugation.

Abstract: A shower apparatus includes a plurality of controllable shower heads, shower jets, or a combination thereof. The controllable shower heads are configured to be moveable while showering. In an exemplary embodiment a plurality of controllable shower heads are positioned above a shower bed. The shower heads are controllable through user input to a control panel. The shower apparatus also includes a holding tank and recirculation system to allow for extended showering. A method for operating a showering apparatus is also provided.

Abstract: A spray apparatus includes an outlet connected to a cyclone chamber with at least one gas inlet to the chamber connected to a pressurized source of gas, and at least one liquid inlet to the chamber for connection to a liquid source. The cyclone chamber has a cross section that decreases in a direction away from the outlet and a closed base such that in use at least one of the liquid and gas entering the chamber forms a reverse flow cyclone, in which the liquid or gas travels in a first direction away from the inlet to the closed base and thereafter reverses direction and travels towards the outlet.

Abstract: A particulate duster system includes a duster used to apply particulate matter to a food product moving along a conveyor positioned beneath the duster. The duster is used to uniformly dispense particulate matter onto a moving product conveyor for carrying a food product to be dusted.

Abstract: An air halo assembly for a spray gun assembly is provided. The spray gun assembly includes a fluid supply assembly, an air supply assembly, and an air halo nozzle assembly. The air halo nozzle assembly includes a liquid nozzle assembly and an air halo assembly. The fluid supply assembly is coupled to, and is in fluid communication with, the liquid nozzle assembly. The air halo nozzle assembly is structured to produce a liquid flow stream having a longitudinal axis. The air halo assembly includes a body. The air halo assembly body defines a passage. The air halo assembly body passage includes an inlet and an air halo outlet. The air halo assembly body passage inlet is structured to be in fluid communication with the air supply assembly.

Abstract: An automatic air spray painting apparatus, includes a painting device (2), a module (17), supplied by a source (1) of pressurized ambient air for continuous production of a flow of carrier fluid constituted by high-purity (98%-99.9%) nitrogen, elements (19, 24, 25) for regulating the pressure of the flow of nitrogen, and adjustable elements (18, 9, 26) for heat conditioning of the flow of nitrogen.

Abstract: A fluid delivery system for dispensing fluid can include a dispenser (10), such as a trigger engine-type dispenser, configured to draw fluid up from a container to dispense a foam-like spray. The dispenser (10) can be configured to draw fluid up from a container. A dispenser body can be configured to mount the dispenser to the container. The dispenser can include a nozzle (N) having an orifice (230), and a mesh (M) material can be placed on the nozzle (N) over the orifice (230). The mesh (M) material can be formed of a polymeric material in one example, and in another example, the mesh material can be formed of a stainless steel material. A method of assembling a dispenser configured to draw fluid up from a container is also disclosed, which can include providing a dispenser body configured to mount the dispenser to the container, securing a nozzle having an orifice to the dispenser body, and securing a mesh material to the nozzle.

Abstract: A valve gun for a high-pressure cleaner is provided, including a housing and a valve arranged therein having a closing body that lies tight against a valve seat in a closed position and is adapted to be acted upon by a valve plunger with an opening force, and including a triggering lever pivotable about a first pivot axis, the triggering lever mechanically coupled to the valve plunger and manually pivotable from a rest to a release position. The triggering lever is coupled to the valve plunger via a coupling lever pivotable about a second pivot axis, the coupling lever having an actuating element via which the valve plunger is adapted to be acted upon with the opening force, and first and second force receiving elements, the first adapted to be acted upon first and subsequently the second with a triggering force upon pivoting the triggering lever to the release position.

Abstract: Improved fitment assemblies for headspace gas removal. In one configuration, a fitment assembly includes a fitment defining a fluid pathway between an interior and an exterior of a container, the fitment including a tubular body having an upper neck portion and a lower neck portion, the lower neck portion depending from the upper neck, the upper neck portion including a proximal end defining a proximal opening. The lower neck portion including a distal end defining a distal opening, the tubular body defining a central bore that passes therethrough, the central bore being concentric about a central axis and passing through the proximal opening and the distal opening a flange for coupling with a container, the flange extending radially outward at a junction with the upper neck portion and the lower neck portion, wherein the lower neck portion is configured to extend into the interior of the container.

Abstract: An apparatus for installing irrigation drip tape, comprising a wheeled frame, a reel mounted on the wheeled frame and configured to hold a roll of irrigation drip tape, the roll of irrigation drip tape able to rotate freely on the reel, a stake driver, the stake driver configured to drive an agricultural stake into a soil, a activation control, the activation control configured to cause the stake driver to drive the agricultural stake into the soil, and a drip tape guide mounted on the wheeled frame, the drip tape guide configured to position irrigation drip tape dispensed from the reel under the stake driver such that the agricultural stake holds the irrigation drip tape in position when driven into the soil responsive to the activation control.

Abstract: A flexible mounting system for a chemical product dispenser includes a dispenser holder and at least one mounting apparatus. The dispenser holder may be attached to the mounting apparatus by means of a releasable connection mechanism. The releasable connection mechanism may provide for attachment of the dispenser holder to the mounting apparatus in multiple orientations. In one example, the mounting apparatus includes a mounting bracket configured for mounting to a support object, such as a wall, table, counter top, cabinet, shelf, cart etc. In another example, the mounting apparatus includes a mounting clamp configured for mounting to ledges, poles, bedrails, handles, etc.

Abstract: A method for the application of an aqueous treatment solution to the surface of a strip which is moving at a preset trip speed, includes the following steps: spraying the aqueous treatment solution onto at least one rotating roll of a roll coater with a rotary sprayer having spray rotors disposed side by side in the longitudinal direction of the roll, to which the aqueous treatment solution is supplied and which are made to rotate by a spray rotor drive so that the treatment solution, driven by the centrifugal force, is sprayed in the form of a spray jet onto the surface of the roll; and applying the aqueous treatment solution to at least one surface of the strip by moving the strip past a rotating application roll of the roll coater, with the application roll transferring the aqueous treatment solution in the form of a wet film onto the surface of the strip.

Abstract: Printing apparatus includes: a printer (thin-film carrier, conveyer, and droplet discharger) printing on a thin film by discharging, while shifting thin film in first direction, droplets containing a functional component from a plurality of positions differing from each other in second direction; and a print uniformity controller (print controller and position switcher) performing the printing for a plurality of times, by using the printer and changing position and/or orientation of thin film relative to the plurality of positions.

Abstract: A battery grid pasting system includes a battery grid pasting machine, a sensing station, and a controller. The battery grid pasting machine includes a conveying apparatus confronting a hopper's dispensing end across a space, and includes a motor actuatable to cause variance of the space and hence variance of the amount of battery paste received on carried battery grids through the space. The sensing station senses a value of a property of a pasted battery grid. And the controller receives the sensed value of the property and controls actuation of the motor based in part or more on the received value.

Abstract: According to one embodiment, a vaporizing system comprises first and second tanks that can accumulate liquid source and first, second, and third pipes. The first pipe allows first gas to be sent out of the first tank. The second pipe allows second gas to be sent out of the second tank. The third pipe is connected to the first and second pipes and allows the first and second gas to be sent out to an external apparatus. The first tank is placed on an upper side of the second tank in a stacked manner.

Abstract: A non-contact jetting dispenser, viscous fluid dispensing system and method. The system includes a viscous fluid dispenser for dispensing the viscous fluid. The system further includes a viscous fluid supply container adapted to hold the viscous fluid. A flow path is provided for the viscous fluid between the viscous fluid supply container and an outlet of the viscous fluid dispenser. An electronic flow meter device is used to produce electrical output signals proportional to the flow rate of the fluid flowing through the flow path. A control is operatively coupled to the electronic flow meter for continuously receiving and processing the electrical output signals and performing a responsive control function in a closed loop manner.

Abstract: The present invention relates to a method of coating a lens, such as a segmented multifocal lens. The method includes, providing a lens support (1), which is in the form of a ring, that includes a central axis (11), an outer wall (14), an inner wall (17) that is positioned between the central axis and the outer wall, an upper beveled surface (20) that converges downward toward the central axis, and a lower surface (29). The method further includes positioning a lens (3) such that an outer edge (74) of a forward surface (65) thereof abuts a portion of the upper beveled surface of the lens support. At least one coating composition is applied over the rear surface (68) of the lens, so as to form a coated lens (3?) having at least one coating layer (89) over the rear surface thereof.

Abstract: An intermediate piece includes an upper element and a lower element, and a check valve including a head and a spring element exerting an opening pressure on the head. The check valve is arranged between the upper element and the lower element at the first or second passage and is configured such that a first or second passage can be closed by the check valve and such ay that the first or second passage is opened when a dispensing pressure counteracting the opening pressure is applied at least at the respective flowable component.

Abstract: A piston for dispensing a flowable component from a cartridge includes a piston having a base body and a venting element. The base body has a passage connecting a component side and an actuation side and has a passage opening. The venting element has an internal connection element and a pin which is partly arranged in the passage opening of the base body. The internal connection element and the pin are connected by a spring element. The pin of the venting element can adopt a sealing position and an aerating position. To enable a secure sealing, the spring element is configured such that it includes an angle of a maximum of 80° with the axial direction in the sealing position of the pin at a connection line to the internal connection element in the direction of an actuation side.