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 pre-compression pump includes a main body, a first piston assembly movably mounted in the main body, a head assembly on a top of the first piston assembly, a second piston in the first piston assembly, and a second spring supported between the second piston and the first piston assembly. A water storage sump is disposed between the main body and the first piston assembly. A water outlet channel is disposed in the inner part of the first piston assembly. The water outlet channel is connected to the water storage sump and a nozzle of the head assembly. The second piston has an ejector pin portion for sealing the water outlet channel.

A coupling device is disclosed for coupling a container to a closure. The container has a container sidewall extending between a first container end and a second container end. A container undercut is defined in an outer surface of the container sidewall. The closure has a closure sidewall extending between a first closure end and a second closure end. A closure outer sidewall is located radially outward from the closure sidewall and defines a slot between the closure sidewall and the closure outer sidewall. The second container end is received within the slot of the closure. A major projection and a major depression are located between the second container end and the slot of the closure cooperating for securing the closure to the container. A minor projection and a minor depression located between the container sidewall and the closure sidewall for cooperating for additionally securing the closure to the container.

A pump and a dispensing device with a pump for dispensing a preferably liquid product are proposed, wherein the pump comprises a spring sleeve for a spring, which separates the spring from the product, and/or wherein the pump comprises a sealed spring chamber for a spring.

In a dispenser for dosing of at least one component received in a receiving compartment, a valve device, forming an inlet valve and an outlet valve associated with an outlet opening, is formed of at least two valve elements.

[Object] To provide a trigger sprayer including a valve through which liquid flows with very high efficiency. [Solution] The present invention is directed to a trigger sprayer for, in a state of being attached to a container, causing liquid inside the container to be sprayed from a nozzle part 3 through a passage by rotating a trigger part to move a piston part 5 to apply pressure to liquid inside a cylinder portion 42A of a cylinder structure 4, including: an F valve 2 provided in a passage between the cylinder portion 42A and the container; and an S valve 1 provided in a passage section between the cylinder portion 42A and the nozzle part 3, wherein the S valve 1 includes a first valve body 11 and a first valve seat 12, the first valve body 11 is oppressed against the first valve seat 12, and when the first valve body 11 moves away from the first valve seat 12 so that the S valve 1 opens, the first valve body 11 moves in the same direction as the direction that the liquid flows.

A fluid substance container including a collar featuring a passage and a pair of laminated film sheets heat-welded along perimetral welding lines so as to form a bag, the pair of sheets also being heat-welded to the collar so that the passage in the collar provides access to interior of the bag; the collar features a cup-shaped part in which the passage is formed, there being a sealing lip extending from a bottom of the cup-shaped part, the sealing lip being formed integrally with the collar and intended to cooperate in an air-tight manner with an outer surface of the body of a hermetic pump which may be housed, at least partially, in the collar.

Embodiments of the invention relate to dosing dispensers and in particular to dosing dispensers that may be operated using one hand by raising and filling a dosing chamber followed by lowering and dispersing a product from the dosing chamber and wherein the dose may be selected or adjusted and a user may visually confirm that the proper dose is being loaded and delivered by the dispenser.

The present invention relates to a pump head that enables a metered dispensing of fluids. The present invention also relates to a metering apparatus that can, for example, be configured as a squeeze bottle, wherein the metering apparatus comprises a pump head in accordance with the invention.

To provide a base body of pressurized spray that makes it possible to stabilize a pressing spring and also to reduce the number of assembling processes. The base body 2, which is assembled into a pressurized spray A that is attached to a container so as to suck a liquid inside the container into a cylinder part 6 through an F valve 7 from an introduction pipe 4, and by applying a pressure to the liquid inside the cylinder, the liquid is jetted out through an S valve 10 from a nozzle, is provided with: an attaching part for use in attaching the introduction pipe 4 on a lower side, which is attached between a cap and a container mouth part, and a pressing spring part 11 that is attached onto an upper side and presses the S valve 10 in a valve closing direction.