摘要:
A spray system has a pump with a double-action reciprocating plunger balanced to receive equal up-stroke and down-stroke assist from a pre-pressurized supply. The reciprocating plunger has identical working surface area on opposite first and second axial faces. A pumping system has a double-action reciprocating plunger with upward- and downward-facing spacers. The plunger travels axially within a proportioning cylinder with first inlet and outlet ports at a first axial end, and second inlet and outlet ports at an opposite second axial end. When the plunger is at its top-most position, the upward-facing plunger occludes the first inlet and outlet ports without blocking flow. When the plunger is at its bottom-most position, the downward-facing plunger occludes the second inlet and outlet ports without blocking flow.
摘要:
Pump dispenser, particularly a movable-nozzle pump dispenser, intended especially for use in dispensing oral medicines e.g. to children. One feature disclosed is a tooth or ratchet structure (752,69) engageable between the plunger head (6) and the pump cylinder body (2). This enables optional holding of the plunger at an intermediate position during a dispensing stroke, so that a dose can be given bit by bit. Other proposals are formations around the top (7) of the cylinder body (2) which interact with the inside of the plunger (6) to control or limit movement of the plunger (6) according to their relative rotational orientation. For example the plunger may be locked up unless turned forcibly past a rotational stop. A related feature is a spring lock tab (67) preventing rotation of the plunger unless the tab is pressed to release it. Last but not least, the product container (100) may contain balls (98) to cause agitation and these may be held in a clip (97) to keep them in place during assembly.
摘要:
The invention concerns a fluid product dispensing device, comprising a dispensing orifice (5), a reservoir (10) containing at least one dose of fluid product, at least one piston (15) sliding axially in said reservoir (10) for dispensing the fluid product, a dispensing member (20) co-operating with said piston (15), and an actuating element (30) co-operating with said dispensing member (20). The invention is characterized in that said dispensing member (20) is mobile between a locking position preventing said actuating element (30) from being actuated, and a releasing position, wherein the actuation of said actuating element (30) moves said dispensing member (20) to dispense a dose of fluid product, said dispensing member (20) being manually moved from its locking position to its releasing position prior to the actuation of said device.
摘要:
Die Erfindung betrifft eine Dosierpumpe aus Kunststoff zur dosierten Abgabe eines Mediums aus einem Behältnis, insbesondere flaschen-, dosen- oder tubenartigen Behälter (2), mit einer Pumpkammer, die ein Ein- und ein Auslassventil aufweist, sowie einer Vorratskammer, wobei zur Durchführung der Pumpbewegung ein oberes und ein unteres Gehäuseteil vertikal zueinander bewegbar sind. Zur vorteilhaften Durchführung eines Spendevorgangs schlägt die Erfindung vor, dass mittels Dreheinwirkung auf das axial bewegliche obere Gehäuseteil zugleich eine Abgabe von Medium bewirkt wird.
摘要:
Atomizing dispenser for endonasal spray administration of drug solutions, comprising a main body or slider (1), a piston/pump (12) axially slidable into a drug container (5) and a housing/button (3), characterized in that as a specific feature of the invention, the piston/pump (12) is provided on its stem (4) with two grooves/seats (6) and (7) each retaining the resilient detent rings (8) and (9), which oppose and control the piston/pump (12) run. Said control being exerted by obliging to accumulate enough energy in the user's hand to force the resilient detent rings (8) and (9) to expand and to snap out from their grooves/seats (6) and (7), one after the other one, thus fractioning the piston (12) run and the consequent atomized delivery into two separate deliveries which can be administered one for each user's nostril, said snap allowing an instant release of the accumulated energy on the piston/pump (5) with the consequent servo-assisted perfect atomization of the drug solution.
摘要:
A hand-held dispensing device operable to dispense a fluid as an atomized spray by hydraulic pressure. The device includes a cartridge containing a fluid to be dispensed and a pressure-multiplying piston pump operable by liquefied gas pressure and manually controlled by a valve. The pump is configured to receive pressure from a compartment containing liquefied gas and transmit higher pressure to the fluid to be dispensed. The pressure multiplying pump produces high pressure, typically between 6-30bar, which is suitable for generation of fine spray by hydraulic atomization. The device uses about 1/10 th the amount of liquefied gas compared to a propellant-based aerosol therefore it has a significant ecological and health benefits.