Abstract: In a manually operable discharging apparatus, the discharge nozzle has an at least two-stage atomizer, in which the medium flow, following pre-atomization, is atomized by surge-like acceleration with a whirled, fine compressed air flow, e.g. according to the Laval, effect, so that even finer droplets are obtained. For this purpose to the discharge nozzle, a separate compressed air channel portion upstream of the end opening supplies compressed air from a time immediately before the supply of medium to a time after its supply. The compressed air can be produced in simple manner by a compressed air pump combined constructionally with the medium pump and operable together therewith by means of a single handle and which in the extension of medium pump is provided immediately adjacent to its outer end and whose pump cylinder is formed by the cap-like handle. The compressed air flow can also be passed to other points of the discharging apparatus, e.g.

Abstract: A manually operable discharge pump for media is operable in a normal position and in an inverted position. A duct means 57b carries the medium. At least one valve 12b substantially closes and opens at least one duct 57b, and the valve 12b has a deformable valve body 44b cooperating with a valve seat 45b, the valve body being arranged between the valve seat and an opposite facing support face 56. The valve body 45b opens by a deformation motion providing an opening position and a closing position of the valve 12b. The valve body 54b is provided by a disk-like spring washer inserted between the valve seat 45b and the facing support face 56.

Abstract: In a manually operable discharging apparatus (1) in the extension of the medium pump (2) provided for conveying the medium and in directly equiaxial manner at the outer end thereof is provided a compressed air pump (50) located in a cap-like, common handle (22), with which by means of a compressed air duct (90) separate from the medium supply for furthering atomization compressed air can be delivered to the discharge nozzle (25) or in other areas of the discharging apparatus (1), e.g. to the medium discharge duct (24), so that it is also possible to clean said duct by blowing free. The compressed air pump (50) can be constructed in such a way that it starts with the compressed air delivery prior to the medium delivery of the medium pump (2) and ends after this. In addition, appropriately there is an at least two-stage atomizing device (100) for the additional atomization of a preatomized medium flow with a nozzle air flow in the vicinity of discharge nozzle (25).

Abstract: In a dispenser a manually operable thrust piston pump (2) has a presuction piston (11) located with a limited spacing within a pump piston (10) and which in the manner of a telescopic tube engages over a cylindrical, freely projecting chamber body (15) and consequently bounds a presuction chamber (17) constantly connected by a line to a container and whose length and volume are significantly greater than that of a pump chamber (20) surrounding presuction chamber (17). The two working pistons slideably guided on one another form valve closures of an outlet valve (23) controlled by pressure difference and which at the end of the pump travel and in addition to said control, can be mechanically opened by a dog (40) positionally variable by means of a compressible neck (29) for venting the pump chamber (14).

Abstract: In a discharging apparatus (1) for in particular a single use, the complete pump stroke (11) to be performed only once is subdivided into at least two partial strokes (12,13) by a limiting device (24) which, for the end of each partial stroke, has a stop (25) to be overcome in the manner of a resilient detent. All parts of the limiting device (24) are located in such a way that the guidance of pump piston (6) on thrust piston pump (4) on the piston running path (7) is in no way impaired. At the end of the last partial stroke (13) the pump cylinder (5) mountable as a separate vessel on pump piston (6) is positively locked with respect to the remaining discharging apparatus (1) by a removal preventing means (40), so that the interior of pump cylinder (5) is no longer accessible.

Abstract: A vacuum-tight and pressure-tight closed storage space in a container is constructionally combined with a thrust piston pump projecting thereinto and a drag piston slidably guided therein and in the initial position of the thrust piston pump is hermetically sealed by an exhaust valve mechanically closed in forcibly controlled manner. The drag piston is adapted to the thrust piston pump in such a way that the storage space can be emptied substantially free with the thrust piston pump.

Abstract: A discharger, particularly intended for the discharge of flowable media, especially pharmaceutical preparations, has a lock for the discharge head (5) in the form of a pump handle, so that the latter cannot be operated in an accidental or unauthorized manner. For this purpose two release handles (24) are provided which must be simultaneously depressed, after which discharge head (5) can be turned with the other hand, so that locking members (22) of the lock do not jump back into their locking position and instead slide on a sliding surface (27) of discharge head (5) during operation. Following the use of discharger (1), discharge head (5) can be rotated back into a position in which the locking members (22) resiliently spring back into their locking position.

Abstract: A manually operable fluid dispenser is described in which the pump cylinder (12) is a separate part plugged onto a dispenser body (2) and secured against retraction by stop and counter stop members (18, 10). The pump cylinder (12) is engaging a counter member (9) of the dispenser body (2) and this counter member (9) is surrounded at a distance by an additional casing jacket (5) entirely receiving the pump cylinder (12) in the initial position of the pump piston (20). Although a resiliently opening and closing discharge valve is conceivable a discharge closure device can be provided which, upon initially operating the discharge pump, irreversibly opens. An expel member (34) immersed into the hollow pump piston (20) is provided in the pump chamber (14) in such a way that it immerses at the beginning of the pump stroke.

Abstract: A dispensing pump means has an operating pusher for effecting a pump stroke and a control means for selectively varying the length of stroke. The control includes a neck on a base for receiving the operating pusher, cooperating grooves and abutment shoulders guiding the pusher and setting its maximum stroke. At least one projection positively slides in a selected one of a plurality of grooves of different lengths, the projection being positioned out of the grooves and in front of the ends of the grooves in an initial position of the pump, i.e., prior to the pump stroke. Axially preceding the ends of the grooves, an arched path extends around the pump axis and guides the projection during manual rotation of the operation pusher as the projection is positioned over the selected groove.

Abstract: A dosing or atomizing pump for liquid, creamy or pasty media has, in addition to its outlet valve provided on the pump chamber an additional valve provided in the pump operating pushbutton and closes the discharge opening directly at its mouth. By means of the hydraulic pressure, the additional valve body is operated by means of a differential piston. In a variant, the valve body can be a functional part of an atomizer nozzle. The additional valve prevents drying or other negative influencing of the medium in the discharge passage.

Abstract: A dispenser (1) has two facing and outwardly sealed reservoirs (2) for separate media components, as well as for each reservoir (2) a separate discharge pump (3), both discharge pumps (3) being simultaneously operable by means of a common handle (10). Thus, the components are separately sucked in and are kept separate up to a mixing zone located inside or outside the handle (10), but with respect to the use thereof are brought together at the latest possible time. The components can be brought together in a precisely dosed quantity ratio.

Abstract: A manually operated dispensing pump has dual pump mechanisms, one pump being operable in a normal upright position and the other pump being operable when the apparatus is inverted. The dual pumps are fed from the same storage vessel for the media to be pumped. A preferred embodiment arranges the dual pumps successively along the same axis, each having suction ports and valves operable to enable the respective pump when the apparatus is correctly positioned and to seal off the pump when the other pump is enabled.

Abstract: A dispenser (1) has an admixing chamber (5) for each of the admixing components to be mixed together in a main chamber (4), the admixing chamber being inserted in a mount (7) of main chamber (4) formed by a vessel neck. A partition of the admixing chamber (5) is essentially constructed as a closure part (17), which is connected in one piece with admixing chamber (5) by means of a predetermined breaking point (18) and forms a component of a riser tube (6). For putting the discharge apparatus into operation a closure is opened and a discharge pump (3) within mount (7) is so introduced into admixing chamber (5) that the discharge pump (3) is connected with a suction connection (27) accompanied by the opening of a tube connection with riser tube (6) and then through further axial displacement of tube (6) the closure part (17) is broken free, so that the component flows from admixing chamber (5) into main chamber (4).

Abstract: A dispenser for flowable media, particularly pasty pharmaceutical or cosmetic products, has a drag piston guided in a reservoir and is filled through a connecting piece through the drag piston. A riser is connected to a discharge pump and a reservoir closure. Thus, the interior of the reservoir to be filled can be well sealed from the outside during filling and ensures a clean, hygienic filling and simple installation of the dispenser. The drag piston is advanced to close the ventilation openings with a slide type control and the riser and discharge pump are filled with the medium following the filling process.

Abstract: The thrust piston pump of a delivery apparatus for liquid media and the like is provided with a valve arrangement in the suction passage. The valve arrangement has two valve seats acting in opposing manner and is associated with a single common valve body. This permits a rapid transfer of the valve body into the closed position engaging on the valve seat, particularly during operation in an inverted position. In addition, the discharge passage has a mechanically openable discharge valve which can be simply opened by displacing the actuating head of the pump with respect to a collar of the pump piston.

Abstract: A thrust piston pump for the delivery of media has a spring constructed in one piece with the piston rod of a piston unit and located in the pump chamber, which is guided on a sloping surface formed by an internal cone. The piston rod is constructed in such a way that an axially resiliently compressible, sleeve-like piston collar can be fitted from the outer end of the piston rod. The fastening cap can be constructed in one piece with a flange edge, a ring packing and/or a component of the cylinder casing, particularly its cylinder cover. This leads to high pump reliability, in the case of simple construction and easy assembly.

Abstract: A dispenser or delivery apparatus for flowable media, particularly very viscous or gel-like media, has a dosing chamber body (38) located within the stored medium and the body (38) moves backwards and forwards over part of the pump stroke of the pump piston (10) of a thrust piston pump (8). Body (38) defines the piston bath (53) for pump piston (10) surrounding pump chamber (59) and the valve body (48) of an intake valve (47) for pump chamber (59). Accompanied by reliable filling of pump chamber (59) and small piston paths, this leads to a very accurate dosing of the medium quantity discharged per piston stroke.

Abstract: A thrust piston pump for an active substance dispenser has two equiaxial, position-rigid, interconnected pistons running in the same direction, namely a pump piston passing in and out of an otherwise closed pump chamber and a larger presuction pistion located downstream thereof, in whose associated pressure chamber is located the pump chamber end opened by the passing out of the pump piston. This leads to a very accurate dosing of the discharged active substance quantity, accompanied by a simple construction and high operational reliability.

Abstract: The discharge pump of a discharge apparatus for flowable media is provided with a ventilating channel for the ventilation of the active substance dispenser and the resulting ventilation connection along the channel passes through a bacteria filter. The filter is arranged on a casing of the pump disposed within the reservoir, the filter facing an opening on the casing for the ventilating passage, at a slight spacing from the pump casing. Thus, bacteria which otherwise could penetrate with the ventilating air passing along the ventilating channel from the discharge pump into the reservoir, is held back within the discharge pump.

Abstract: A vacuum-tight and pressure-tight closed storage space in a container is constructionally combined with a thrust piston pump projecting thereinto and a drag piston slidably guided therein and in the initial position of the thrust piston pump is hermetically sealed by an exhaust valve mechanically closed in forcibly controlled manner. The drag piston is adapted to the thrust piston pump in such a way that the storage space can be emptied substantially free with the thrust piston pump.