An adapter for delivering an atomized spray from a syringe. The adapter includes an adapter guide including a side wall, an interior surface of the side wall defining a through-bore and a shoulder in the through-bore. A pin guide is located in the through-bore. The pin guide includes a seat and a sleeve extending from the seat. A spring positioned around the pin guide sleeve and between the pin guide seat and the shoulder, wherein the spring and the sleeve provide a passageway there between. A pin extends from the pin guide seat and through the passageway. Affixing the adapter onto a syringe provides an atomizing delivery device. A method of dispensing an atomized spray from a syringe is provided by affixing the adapter to the syringe.

To provide a trigger sprayer that can maintain uniformity of a chemical solution containing fine powder and is superior in flow efficiency. The trigger sprayer of the present invention is designed such that a piston part 5 is moved by a pivotal movement of a trigger part, while being attached to a container, so as to apply a pressure to a liquid inside a cylinder part 42A of a cylinder structural part 4 so that the liquid in the container is jetted from a nozzle part 3 through a passage P.

An F valve 2 attached to a bottom part of the cylinder part 42A serving a passage between the cylinder part 42A and the container and an S valve 1 installed in a passage part P between the cylinder part 42A and the nozzle part 3 are installed, and the F valve 2 is constituted by a cylinder-shaped base part 22 and a second valve body 21 having a sealing function as well as a small spring 22A coupling the cylinder-shaped base part 22 and the second valve body 21 to each other, and the second valve body 21 is further provided with a lower face part and a tilt part 21A on an opposite side, and the lower face part is fitted into the bottom part of the cylinder part 42A to be fixed therein, with the second valve body 21 being resiliently made in contact with a second valve mount 42A1 formed on the bottom part of the cylinder part 42A, and by pushing the tilt part 21A of the second valve body 21 by the bottom part of the piston part 5, the second valve body 21 is tilted so that one portion thereof is separated from the second valve mount 42A1, thereby opening the valve.

A foam dispenser has a pump body and a sprung plunger (2). A one-piece moulded cylinder component (31) comprises a larger diameter portion (32) for an air cylinder and a smaller diameter portion (33) for a liquid cylinder. The plunger (2) carries respective pistons (22,21) movable in the air cylinder and liquid cylinder to pump air and liquid through valved outlets to a mixing chamber (8) in the plunger for foam production. The liquid cylinder has a discrete inlet piece (9) including an inlet valve. The liquid outlet valve is operated by a valve pin (25) connected to a valve pin retainer (39) which is formed integrally as a one-piece moulding with the cylinder component (31).

System for refilling with liquid a second inverted bottle disposed above a first bottle containing liquid via a filling interface, disposed between the two bottles, comprising a valve in two elastically deformable parts. Depending on the intensity of the application of a downward vertical force on the second bottle, the pump of this bottle is first depressed to open the vent under a first force, and, then, the valve deforms elastically under a second, more intense force in order to cause the transfer of the liquid from the first to the second bottle.

Dispensing devices are provided. Such devices utilize a combination of Flair? technology, pre-compression valves and aerosol-like pressurization of the dispensed liquid. An example dispensing device has, for example, a main body comprising a pressure chamber, the latter being provided with a pressure piston and a pressure spring. The device further has a piston and a piston chamber which draws liquid from a container and fills the pressure chamber with that liquid as a user operates a trigger in various compression and release strokes. The piston chamber has both an inlet valve and an outlet valve. Liquid exiting the piston chamber under pressure enters a central vertical channel which is in fluid communication with both the pressure chamber and a dome valve, with pre-defined opening pressure, provided near the outlet channel at the top of the dispensing head.

A foamer dispenser including a mesh filter that is disposed in a mixture flow path of a jet ring to allow a mixture to pass is provided. A connecting flow path area between a liquid flow path and the mixture flow path and a connecting flow path area between an ambient air flow path and the mixture flow path have the relation 2.8S.sub.1/S.sub.23.8, and/or, a smallest flow path area of the mixture flow path is located on an immediately upstream side of the mesh filter, and the smallest flow path area and a flow path area of the mesh filter have the relation 4S.sub.4/S.sub.310.3.

A dispenser has a housing with a stem extending through the housing. The stem is attached to a head which rotates therewith. When the stem/head combination are rotated axially into, are in some positions, blocking flanges block portals into the stem. In other axially rotated positions, portals in the stem are unblocked by the portals. The portals are at a side of the stem adjacent to the bottom in embodiments of the disclosed technology. Further, a bottom region of the internal space can be conical to direct the material towards the portals, the bottom side of the stem being surrounded by the adjacent conical space such that it fits snugly there-with in embodiments of the disclosed technology.

A dispenser head (10) of a trigger dispenser device includes a self-bearing pre-compression valve (80), made of polypropylene, capable of per se retaining in a stable manner to the head frame (14).

A dispensing head for a system for dispensing a product is described herein. The head includes a body having a housing that is provided with an anvil around which a nozzle is mounted. The nozzle includes an outlet orifice to place the housing in communication with the exterior, and wherein the head includes a membrane added around the periphery of the anvil in the housing in such a way as to form between the membrane and the nozzle a path for dispensing the product.

A dispensing closure (10) for dispensing a flowable product (12) from a squeeze-type product container (14) includes a closure body (16) having an upper deck (32), an exit orifice (34), a flow conduit (36) providing a flow path to the exit orifice, and a skirt (40) configured to attach to the product container. A measuring reservoir (26) is received in engagement with a lower surface of the upper deck. The measuring reservoir is filled with a measured dose of flowable product through flow ports (54) when the container is inverted. A piston valve (28) is slidably movable within the measuring reservoir between an open position and a closed position. The piston valve is movable from the open position to the closed position to dispense the measured dose of product responsive to pressure within the container induced by squeezing.