Abstract: This invention concerns a valve for an underpressure-activated outflow mechanism for a drinking receptacle (2). The valve includes a valve head (34) and a valve seat (44), in which the valve seat (44) is arranged in force-transmitting connection with a membrane (1), whereas the valve head (34) is fixed to the remaining structure via at least one stay (36).

Abstract: This invention concerns a valve for an underpressure-activated outflow mechanism for a drinking receptacle (2). The valve includes a valve head (34) and a valve seat (44), in which the valve seat (44) is arranged in force-transmitting connection with a membrane (1), whereas the valve head (34) is fixed to the remaining structure via at least one stay (36).

Abstract: An underpressure-activated valve device for a drinking container (32). The device consists of an outer membrane (2) and an inner membrane (4) that are placed at an axial distance from one another, and their peripheral attachment areas are pressure-sealingly interconnected, causing a reference pressure chamber (6) having at least one vent (8) to an ambient pressure P1 to exist between the membranes (2, 4). One membrane (2, 4) is fixedly connected to a flow pipe (10), and the other membrane (4, 2) is provided with a membrane opening (12) within which the pipe (10) is movably arranged. The membrane opening (12) is associated with a primary sealing body (18) for sealing against fluid flow via the pipe (10), and with a secondary sealing body (16) for sealing between the chamber (6) and an internal pressure P3 in the container (32).

Abstract: The present invention regards an underpressure-activated valve mechanism for controlled dispensing of fluids, including liquid food articles, from a receptacle. When the user applies sufficient suction force (P2) across a pressure comparative diaphragm zone a valve opening force is applied to a valve area that has a force connection with the diaphragm zone. When the suction force ceases the valve area closes and remains closed, even in the event of overpressure (P3) in the receptacle.

Abstract: An opening-force-maximizing device of an underpressure-activated valve for a drinking container (2). The device includes a partition wall (6, 106, 206) enclosing an outlet opening (4) and being provided with a wall opening (8, 108, 208) in pressure-sealing contact with an axially movable valve sealing member (22, 122, 222) being in position of rest. It also includes a continuous membrane (12, 112, 212) being arranged to the container (2) and about a valve axis (14) through the wall opening (8, 108, 208). The membrane (12, 112, 212) has an axial extent and consists of an attachment end (12a, 112a, 212a) fixedly connected to the partition wall (6, 106, 206), and a movable manoeuvring end (12b, 112b, 212b) placed at an axial distance from the attachment end (12a, 112a, 212a). The manoeuvring end (12b, 112b, 212b) is arranged in a tensile-force-transmitting manner to said sealing member (22, 122, 222).

Abstract: A method and device for preventing unintended liquid flow from drinking containers are achieved by means of securing an inner tube (29) provided with a bellows (4) within an outer tube (1) and terminating one end of the inner tube (29) as a valve (70, 70?), whereby the suction force from the user provides a pressure difference across the bellows (4), causing the bellows (4) to move the valve (70, 70?) with sufficient force to open. When the suction force ceases, the valve (70, 70?) closes, and it remains closed, even when the liquid in the drinking container (61) is pressurized with pressure (P3).