The present invention relates to sealing valves that can be mounted within a container wall, enabling controlled fluid flow along both inner and outer surfaces of the sealing valve in the same distal direction.

A sealing member for providing a seal between fluid connectors includes a tubular member defining a lumen extending between a first end and a second end. The tubular member may receive a first connector via the first end and a second connector via the second end, and includes an annular wall extending between a first annular portion adjacent the first end and a second annular portion adjacent the second end. The first annular portion may engage the first connector, and the second annular portion may engage the second connector. When a pressure within the lumen is negative, atmospheric acting inward on the annular wall compresses the sealing member to define a contact force between the second annular portion and the second connector sufficient to define a fluid seal between the sealing member and the second connector.

The invention relates to a valve (1) for mounting to a surface (2) and for use in a flow path, which flows through said surface (2), for permitting flow in said flow path in a first direction and for preventing flow in said flow path in a second direction being opposite to the first direction. The valve (1) comprises: one or more ports (21) defined by a plurality of lips (22), wherein each lip (22) is resiliently deformable from a first position, in which the lips (22) are in contact with one another in order to close the respective port (21), to a second position, in which the respective port (21) is opened in order to permit flow in the first direction, and one or more contacting structures (30) arranged to mechanically contact the surface (2), when the valve is mounted to the surface (2), such that the one or more contacting structures (30) bias the lips (22) into the first position.

An air pressure relief valve providing relief against both gradual and sudden changes in pressure is disposed on an opening of an assembly of parts. The valve includes a plurality of blades, the blades are circumferentially distributed and abut each other. Each blade includes a nozzle end, the nozzle ends abut each other, and a part of the nozzle end on each blade allows deformation by internal air pressure to form an air hole, wherein air can enter or exit the functional assembly through the air hole. The thickness of the blade gradually decreases in direction from a thick base end to the thinner-section air nozzle end.

A chalk port for retaining chalk within a chalk reservoir of a chalk box may include an interface portion configured to interface with a housing of the chalk box to retain the chalk port in contact with the chalk box, a tapered portion extending away from the interface portion in an axial direction, and a slit assembly disposed at the tapered portion. The tapered portion may have a diameter that reduces as distance from the interface portion increases. The tapered portion may include a plurality of projections separated from each other by slits of the slit assembly. The projections may have a rest position configured to bias the slit assembly closed. Ribs may be formed to extend between the interface portion and the projections to bias the projections to the rest position.

A self-closing dispensing valve is made of an elastic material and includes a valve head with a dispensing orifice, a circular peripheral retaining flange spaced apart from the valve head in an axial direction, and a connecting sleeve integrally connected with the valve head on one end and the retaining flange on another end. The dispensing orifice is formed by at least three slits in the valve head, where the slits converge at a centre of the valve head and are angularly evenly distributed around the centre of the valve head. The valve head includes a number of lobes, where in each of the lobes at least one of the slits is formed. Each of the lobes has a tip region on a radial outer end of the lobe, where the tip regions of the respective lobes lie approximately on an imaginary circle.

A refillable cartridge for an electronic smoking device includes a cartridge housing, a liquid storage reservoir, and an energy application device for generating an aerosol from liquid received from the reservoir, wherein the reservoir includes an opening having an opening width, which is temporary closed by a sealing layer including a valve, wherein the valve includes a valve member which is overlapping at least parts with the opening along its width direction, the valve member is bendable in an opening direction, which is orthogonal to the width direction, and a thickness of the valve member in the opening direction differs along its width direction. A method for manufacturing a refillable cartridge and a method for refilling a refillable cartridge are also provided.

A dispensing system may include a fluid container and a container receptacle. The fluid container may include a stacked arrangement of cross-slit valves through which a rigid projecting member of the container receptacle may be inserted through. Upon insertion of the rigid projecting member therethrough, fluid from the fluid container may flow into a tank of a 3D printing system through a dispensing channel of the rigid projecting member. The stacked arrangement of cross-slit valves acts a partial seal around the rigid projecting member, preventing fluid from leaking out of the fluid container from the outer surface of the rigid projecting member, while at the same time allowing ambient air to flow into the fluid container so as to backfill the partial vacuum created by the dispensing of the fluid from the fluid container.

A backflow prevention system and apparatus is disclosed. The system includes a pipe designed to couple to a washer. The backflow prevention apparatus includes a housing and two one-way valves. The housing secured to the pipe. A first one-way valve is coupled to the housing, with the first one-way valve defining a first cross-slit. A second one-way valve is coupled to the housing and spaced from the first one-way valve, with the second one-way valve defining a second cross-slit. The first one-way valve and the second one-way valve are designed to allow fluid flow, through the housing, in a first direction and prevent flow of suds, foam, gas, or combinations thereof in a second direction opposite the first direction.

A self-closing dispensing valve is made of an elastic material and includes a valve head with a dispensing orifice, a circular peripheral retaining flange spaced apart from the valve head in an axial direction, and a connecting sleeve integrally connected with the valve head on one end and the retaining flange on another end. The dispensing orifice is formed by at least three slits in the valve head, where the slits converge at a centre of the valve head and are angularly evenly distributed around the centre of the valve head. The valve head includes a number of lobes, where in each of the lobes at least one of the slits is formed. Each of the lobes has a tip region on a radial outer end of the lobe, where the tip regions of the respective lobes lie approximately on an imaginary circle.