Abstract: The invention relates to a hand-operated dispenser (1) for highly viscous to fluid substances with a pumping chamber (17) and with at least one outlet valve (12) and a storage chamber with a feeding piston (5), wherein the dispenser (1) is designed for the output of two different substances, a first substance (4) and a second substance (22). The second substance (22) is brought out by the pressure of the first substance (4). To develop a dispenser of this type for most efficient use, it is proposed that a movable separating body (T) be arranged between the first substance (4) and the second substance (22).

Abstract: A metering pump made of plastic for the metered dispensing of liquid and/or pasty media from a bottle-like container, can-like container or tube-like container with a follower piston. A pump chamber delivering the medium is connected via a suction valve with the container and has as the pumping member an elastic bellows that forms the pump chamber and is arranged between a dimensionally stable lower housing part and a likewise dimensionally stable upper housing part that is telescopically movable in relation thereto. The upper housing part has the discharge opening, which is connected via a discharge channel and a discharge valve with the pump chamber. The bellows has an upper ring collar sealingly surrounding a ring wall of the upper housing part. The ring wall is provided with a displacement piston that has a smaller diameter and protrudes into the bellows.

Abstract: An automatic closure for elastically deformable, tube-like or bottle-like containers of pasty or liquid media has a dispensing opening (5), which is arranged in a front wall (3) of a hood cover and can be closed by an axially movable closing member (8). The closing member (8) is part of an elastic membrane wall (9) of an elastic, hood-like hollow body (10). This hollow body surrounds a ring wall (12) of a chamber (15), which is closed by a bottom (13), through which the medium flows and is provided with a ventilating channel. To make possible a sufficient suction ventilation of the container in a simple manner, the inner ring wall is surrounded by a second ring wall, which forms an annular groove (17) with the inner ring wall (12). The annular groove (17) has at least one axial ventilating opening (30, 31), which connects the ventilating channel (28,29) to the hollow space (27) surrounded by the second ring wall (16).

Abstract: A metering pump dispenser for simultaneous metered dispensing of liquid and/or pasty media has at least two separate storage chambers (1, 2), which are arranged in a common pump housing (9) and with which separate metering pumps with a priming valve and a dispensing valve each are associated. The metering pumps can be actuated by a common actuating member, which is mounted axially movably in the head part of the pump container and has one or more dispensing channels.