A method of assembling a trigger sprayer assembly includes providing an engine having a piston chamber and a fluid passage that is fluidly coupled to the piston chamber, the fluid passage extending from an input portion to an output portion. The method further includes inserting a piston component into the piston chamber, and coupling a trigger lever to the engine and the piston component. Pivoting the trigger lever relative to the engine pushes and pulls the piston component within the piston chamber to drive fluid from the input portion to the output portion of the fluid passage. The method further includes coupling a shroud to the engine, where the coupling comprises positioning a rail protrusion of the engine within a corresponding recess formed in the shroud, and inserting a shelf extending from an interior surface of the shroud into a pair of receiving clips extending from the engine.

A cleaning device includes a cartridge assembly, a hose/tubing, a nozzle, and an activator. The cartridge assembly includes at least one cartridge configured to hold a liquid solution. An attachment device is coupled to the cartridge assembly and is configured to secure the position of the cartridge assembly to a user's arm adjacent the hand. A pump is located within the cleaning device and is located between cartridge and the nozzle, such that pump regulates dispensing of the liquid solution. The nozzle is in communication with the pump and acts as a diffuser to adjust the stream of the liquid solution passed through the hose from pump. The activator is in communication with the pump such that operation of the activator selectively releases a volume of the liquid solution from the cartridge so as to pass through the nozzle. A control unit and interface are permitted.

The invention relates to a system for dosed dispensing of a fluid, comprising a container for the fluid and a dispensing device connected therewith, wherein the container comprises a form-retaining outer container and a flexible inner container connected therewith, wherein a space to be brought into fluid communication with the ambient atmosphere can be developed between the inner and outer containers, and wherein the dispensing device includes a housing and/or frame of which at least a part is integrally formed with the container. The invention further relates to a method of manufacturing a system for dosed dispensing of a fluid, comprising the steps of: manufacturing a container for the fluid, said container comprising a form-retaining outer container and a flexible inner container connected therewith; manufacturing a dispensing device comprising a housing and/or a frame; and assembling the container and the dispensing device; wherein at least a part of the dispensing device housing and/or frame is integrally formed with the container, and wherein assembling the container and the dispensing device comprises mounting a non-integrated part of the dispensing device in the part of the dispensing device housing and/or frame which is integrally formed with the container.

Disclosed is a springless pump (100) mounted on a container and used for pumping a product contained in the container. The springless pump (100) may include a movable part having at least a pressing head (110) and/or a piston rod (150) and a stationary part having at least a threaded sleeve (120). Further, the springless pump (100) may have a restoring mechanism, including a transmission component (130), the transmission component (130) being connected to the movable part and a bearing component (140), the bearing component (140) being formed on or fixedly connected to the stationary part, and the transmission component (130) being rigid and being supported on the bearing component (140). The springless pump (100) allows a user to easily restore same.

A manually operated pump including: an inlet one-way valve; a pump chamber downstream of and in fluid communication with the inlet one-way valve; a piston interior to the pump chamber and slideably engaged with the pump chamber; an actuator engaged with the piston or the pump chamber; a compression spring engaged with the actuator; and an optional outlet one-way valve downstream of and in fluid communication with the pump chamber; wherein the compression spring includes a continuous thermoplastic elastomeric tube supported between opposing offset tube supports.

A handheld spray device has a flexible bellow coupled to a base to thereby retain liquid therein. The bellow has a bulbous section adjacent the base, narrows away from the base to terminal section opposite the base and has a side notch formed at one side of the bellow between the bulbous section and the terminal section. The base also has a nozzle therethrough such that when the bellow is squeezed in use, the liquid is forced via the nozzle.

A gas-filled resilient body and uses thereof are described. The gas-filled resilient body may be used as a valve member, as a spring or as a gas-propelled dispenser.

In exemplary embodiments of the present invention, “Flairosol” dispensing devices can be provided. Such devices utilize a combination of Flair® technology, pre-compression valves and aerosol-like pressurization of the dispensed liquid. Such a 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, for example, the inner container of a Flair® bottle, 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, which serve to prevent backflow. Liquid exiting the piston chamber under pressure (supplied by, a user pumping the trigger) enters a central vertical channel which is in fluid communication with both the pressure chamber (above the pressure piston) and a dome valve provided near the outlet channel at the top of the dispensing head. The dome valve has a preset pressure, such that once exceeded by the liquid, opens and allows for a spray. If the liquid pressure drops below such preset pressure, the dome valve closes off the outlet channel, which serves to regulate the strength of the flow and preclude leakage. Alternatively, in an activated embodiment, for example, once the liquid is sufficiently pressurized, it can be dispensed by a user allowing the dome valve to open by pressing on an activation button that removes a dome lock.

A sprayer of liquids with trigger-operated pump includes a body which can be attached to the mouth of a container and a nozzle for delivery of the liquid. In the body is formed a pumping chamber in communication with the interior of the container and with the delivery nozzle. A one-way valve of suction and of delivery is located in the outlet duct of the liquid a system of precompression comprising a piston pushed with constant force by a spring in occlusion of the outlet duct such as to increase the pressure of the liquid in the outlet duct during the pumping, and also thereby increase the speed or the acceleration of the liquid in output from the nozzle.

[Object] To provide a trigger-type pump dispenser that makes it possible to prevent an out-of-nozzle squirting phenomenon that occurs at a final stage of sucking up of liquid out of a vessel into a cylinder.

[Solution] A trigger-type pump dispenser A includes a handle structure 1, a nozzle base structure 2 attached to the handle structure 1, a trigger 3, a cylinder structure 4, a cap 5 by which the cylinder structure 4 is held down and attached to the mouth of a vessel, a piston structure 6 that slides inside the cylinder structure 4, an inverted-mortar-shaped lip 61 formed in the piston structure 6, a spring 7 that springs the piston structure 6, a valve case 8 attached to the nozzle base structure 2, a mortar-shaped valve seat 81 formed in the valve case 8, a leak valve 9, attached to a bottom part of the cylinder structure 4, that has a bulging portion 91 at a tip thereof, a first valve FV, and a second valve SV. A movement of the piston structure 6 from top dead center to bottom dead center causes liquid in the cylinder structure 4 to be discharged from a nozzle orifice N. The bulging portion 91 at the tip of the leak valve 9 is disposed to pass through the inverted-mortar-shaped lip 61. A through-hole diameter D1 of the mortar-shaped valve seat 81 of the valve case 8 is smaller than a nozzle orifice diameter D2.