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 metering dispenser for simultaneously or selectively discharging two media, including an outlet opening, a first reservoir for a first medium, a first metering-conveyor device for conveying the first medium from the first reservoir, a second reservoir for a second medium, a second metering-conveyor device for conveying the second medium from the second reservoir, a mixing chamber arranged upstream of the outlet opening and in which the first medium, conveyed by the first metering-conveyor device, and/or second medium, conveyed by the second metering-conveyor device, is stored temporarily, and an output-conveyor device for conveying the medium or media from the mixing chamber to the outlet opening. The first metering-conveyor device has the form of a metering-pump device with a variable-volume metering chamber, an inlet fluidically connected to the first reservoir and having an inlet valve, and an outlet fluidically connected to the mixing chamber and having an outlet valve.

A dispenser (1) with a hermetic seal includes a hollow containment body (2) which can be inserted in a bottle, a lower suction tube (5), a piston (7) slidable inside the containment body (2), a hollow stem (6) axially slidable inside the containment body (2), a sealing valve (8) inserted in a bottom portion (4) of the containment body (2) and interposed between the suction tube (5) and the dosing chamber (11). The sealing valve (8) is cup-shaped and the piston (7) has a lower sealing portion (7b) configured in such a way as to interact in compression with an upper edge (8a) of the sealing valve (8) making a hermetic seal between the sealing valve (8) and the piston (7).

The invention relates to a dispenser (1) for dispensing liquid to pasty masses, with a dispenser head (2) that can move under exposure to a spring force for dispensing mass (M), a storage chamber (3) and a pump chamber (4) exhibiting an inlet valve (11) and an outlet valve (12), wherein the dispenser head (2) incorporates a dispenser opening (5) and, in order to seal or release the dispenser opening (5), a closure piston (6) that can be moved in the direction of its longitudinal axis (L), exhibits a distal end allocated to the dispenser opening and a proximal end, and is situated in a mass space (9) of the dispenser head, wherein a section (10) that connects the pump chamber (4) to the mass space (9) further empties into the mass space (9) between the distal and proximal end of the closure piston (6), wherein said connecting section exhibits a central axis (A). In order to favorably design such a dispenser as relates to introducing the dispensing process, it is proposed that the outlet valve (12) of the pump chamber (4) be rigidly coupled with the dispenser head (2), and, when actuated in a first movement segment of the dispenser head that already involves a release of the closure opening (5), a movement into the open position take place, for example the outlet valve (12) enter the pump chamber (4), without otherwise making the pump chamber (4) smaller, at least not significantly.

A pump having a piston (1) sliding in a body (3) having a chamber (5) between an inlet valve (11) and an outlet valve (12), an outlet valve element sliding during actuation in the chamber (5), and a passage (40) wherein, at end of actuation, the outlet valve element (39) cooperates in a non-sealing manner with the passage to open the outlet valve. The inlet valve has an inlet valve element (10) that slides after closure in a sleeve (9) with reduced diameter and a spring (20) bearing on the inlet valve element and on a bottom of the sleeve. The spring (20) returns the piston into its rest position. The sleeve (9) has an inner diameter of less than 4.2 mm. The spring (20) has a force of at least 20 N, so that the pump delivers the fluid product at a pressure (P) of at least 15 bars.

This invention addresses waste of liquids in all sorts of bottles/containers made from plastic, glass, metals bottles, containers, dispensers, caps which use pumping action to expel all sorts of liquids. Inside the bottles will be installed a refillables enclosed bags for liquids made from plastic/silicon based membrane inserted in plastic and glass bottles (containers) filling the volume within the bottles/containers, expelling the liquids using various type of pumps to improve suction of leftover (excess) of liquid as oil base, water base, soap base as shampoo, and any liquid in the bottom of the containers. The inner sealable, elastic, contracting, collapsing membrane made from flexible silicon base, and/or/with, plastic base, and/or/with rubber base, and/or/with nylon base, and/or/with, metal base material and/or from a combination of the material/s.

A pump dispenser includes a housing, a piston structure, a spring, a trigger and a valve. The housing has a front cylinder part and a rear inverted-L-shaped grip part that are integrally formed, a nozzle base that is attached to the housing and that has a front nozzle part mounted thereon. The piston structure is configured of a hollow-shaped piston and a hollow-shaped piston shaft and that slides inside the cylinder part. The spring presses the piston structure upward. The trigger is positioned above the housing, has a front tip rotatably mounted on the housing, and has a mid part where a tip of the hollow-shaped piston shaft abuts. The valve rod is disposed at a center part of the cylinder part.

A fluid dispenser comprising: a fluid reservoir (1); and a pump (3) comprising a pump body (30) and an actuator rod (34), defining between them a pump chamber (33) having a predetermined maximum volume, the rod (34) being axially movable in the body (30) so as to vary the volume of the pump chamber (33); the dispenser being characterized in that it further comprises a dispenser cannula (5) that is mounted on the actuator rod (34) and that includes a dispenser outlet (52) that is suitable for forming a drop of fluid that separates from the cannula (5) by gravity, the determined maximum volume of the pump chamber (33) being substantially equal to the volume of the drop of fluid that is dispensed at the dispenser outlet (52).

[Object] To provide a pump dispenser which allows accurate determination of a direction of spraying of liquid without a nozzle part moving toward a higher or lower position and, furthermore, whose trigger is excellent in operability.

[Solution] The present invention is directed to an F valve attachment structure for, in a pump dispenser that causes a piston part to slide to apply pressure to liquid inside a cylinder part including an F valve and causes the liquid to squirt out from a nozzle part via an S valve, attaching the F valve to the inside of the cylinder part with use of a valve stopper, the F valve including: a valve body part; and a rod-like part extending upward from the valve body part, wherein the valve body part has a plurality of guide pieces and check pieces therearound, the valve stopper has a hole and notches in a ceiling part of the valve stopper, the notches allowing the guide pieces to pass through the notches, the valve stopper is fixable inside the cylinder part, when the valve body part of the F valve is inserted through the hole of the valve stopper, the check pieces are allowed to elastically pass through the hole, and after insertion, the check pieces of the F valve come into contact with the ceiling part of the valve stopper to be retained.

A shut-off system for a dispenser includes a pinch member that moves relative to a guide and which is normally biased against a flexible outlet tube that is disposed therebetween. The flexible outlet tube that carries material, such as soap, supplied from a pump to an outlet nozzle. The pump and the pinch member are in operative engagement with an actuator, such that when the actuator is not engaged, the pinch member closes the outlet tube to prevent residual material retained in the outlet tube from flowing or drooling out of the outlet nozzle. Correspondingly, when the actuator is engaged, the pump is compressed, and the pinch member is moved away from the outlet tube, allowing the material to be pumped through the outlet tube and dispensed from the outlet nozzle.