초록 ▼

A discharge apparatus (1) is constructed as an air pump with two axially interconnected and constantly communicating pressure chamber parts (20, 21). Of these one surrounds a cap-like mounting support (10) for a further medium pump (2) and/or a reservoir (3) on the outer circumference. The mounting

A discharge apparatus (1) is constructed as an air pump with two axially interconnected and constantly communicating pressure chamber parts (20, 21). Of these one surrounds a cap-like mounting support (10) for a further medium pump (2) and/or a reservoir (3) on the outer circumference. The mounting support (10) serves as a piston-like displacement body for the other pressure chamber part (21) and as a guide for the displaceable component (5) of the discharge apparatus (1). From the outside a fixing cap (31) can be inserted in a substantially clearance-free manner into the mounting support (10) and forms the connection between all the separate subassemblies, namely the discharge apparatus (1), the medium pump (2) and the reservoir (3). This gives a very simple construction and installation, accompanied by a high delivery volume.

대표청구항 ▼

A dispenser for discharging media during a discharge operation, comprising: at least one dispenser casing having at least one casing jacket (11, 13); at least one pressure chamber peripherally bounded by said at least one casing jacket (11); a plunger casing slidably mounted within said at least one

A dispenser for discharging media during a discharge operation, comprising: at least one dispenser casing having at least one casing jacket (11, 13); at least one pressure chamber peripherally bounded by said at least one casing jacket (11); a plunger casing slidably mounted within said at least one dispenser casing said plunger casing and said casing jacket forming a substantially medium-tight seal at their junction, said at least one casing jacket (11) providing at least one inner sleeve (13) bounding an axial passage opening (24); a central shaft axially mounted within said plunger casing and passing through said passage opening, said passage opening sealingly engaging said central shaft so as to prevent leakage from said at least one pressure chamber while permitting said central shaft to slide-within said passage opening to a depressed position; a mounting support integrally formed at least partially within said at least one inner sleeve of said at least one casing jacket, said mounting support being constructed so as to engage a secondary discharge unit and maintain said at least one dispenser casing and said at least one casing jacket in a fixed position relative to said secondary discharge unit with respect to said discharge operation; at least one discharge outlet and a chamber outlet for exhausting said at least one pressure chamber to said at least one discharge outlet via a discharge channel when the plunger casing is depressed into the at least one dispenser casing; and a second discharge channel traversing said central shaft and forming a passageway between said secondary discharge unit and said at least one discharge outlet; and whereby a compact dispenser is provided by: forming said mounting support as part of said at least one pressure chamber; circumferentially defining the at least one pressure chamber around the mounting support; and utilizing the plunger casing as part of the at least one pressure chamber.