An exemplary foam dispensing system includes a dispenser housing configured to be mounted below a counter, a spout configured to be mounted above a counter, a container supported by the dispenser housing, a pump in fluid communications with the container and configured to be mounted below a counter. The pump includes an air pump portion and a liquid pump portion. The pump also includes a mixing chamber. Liquid pumped from the liquid pump portion is mixed with air pumped from the air pump portion in the mixing chamber. A dispense tube is included that is configured to extend from the mixing chamber below a countertop to one or more mix media located above the countertop proximate an end of the spout. The one or more mix media are located near an end of the spout. An outlet nozzle is also provided and is located downstream of the one or more mix media.

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.

A dispenser includes a housing, an inverted container disposed in the housing, a outlet nozzle, a pump, a first check valve, and a second check valve. The container holds a fluid. The pump is disposed between the container and the outlet nozzle. The pump includes a pump inlet in fluid communication with the container, a pump outlet in fluid communication with the outlet nozzle, and a pump chamber in fluid communication with the pump inlet and the pump outlet. The pump chamber is movable between an expanded position and a compressed position. The first check valve is disposed between the pump and the outlet nozzle, and the first check valve has a first cracking pressure. The second check valve is disposed between the first check valve and the outlet nozzle, and the second check valve has a second cracking pressure. The second cracking pressure of the second check valve is greater than the first cracking pressure of the first check valve.

Problem to be Solved

To provide a pressurized spray makes it possible to prevent liquid from leaking to the outside and subsequently to prevent peripheral contamination and wasteful use of the liquid.

Solution

A pressurized spray A is provided with a cap part 1, a body part 3 capable of being attached to the cap part, a base body 2 that is attached to the body part 3, an introduction pipe 4 for introducing a liquid in a container attached to the base body 2, a nozzle part 5 attached to the body part 3, a cylinder part 6 attached to the body part 3, an F valve 7 attached to the bottom of the cylinder part 6, a piston part 8 that is allowed to slide inside the cylinder part 6, a pivotal trigger 9 that moves the piston part 8 in forward and backward directions, a restoring spring part 13 for restoring the trigger 9, a pressurized valve (S valve 10) attached to a passage of the body part 3, and a pressing spring part 11 for pressing the pressurized valve in a valve closing direction, and by pivotally moving the trigger 9, the pressurized spray A jets out the liquid, and a liquid passage 12 that communicates with the inside of the cylinder part 6 is formed between the base body 2 and the body part 3 so that the liquid located between the pressurized valve and the base body 2 is collected in the container through the liquid passage 12 and the introduction pipe 4.

A description is given of a sprayer of liquids (10) with trigger-operated pump comprising a body (11) which can be attached to the mouth of a container and a nozzle (16) of delivery of the liquid, in the body (11) being formed a pumping chamber (22) in communication with the interior of the container and with the delivery nozzle (16), via a one-way valve of suction and of delivery (30), in the outlet duct (29) for the liquid a system of precompression being placed comprising a piston (41) pushed with constant force by a spring (42) in occlusion of said outlet duct (29) such as to increase the pressure of the liquid in said outlet duct (29) during the pumping, and therefore the speed or the acceleration of the liquid in output from the nozzle (16).

A metering pump for integration into a container includes a pump housing having a pump chamber, a pump inlet, and a pump outlet. The pump chamber is defined by a pump chamber base and an elastically deformable pump dome. The pump housing is composed of at least a first pump housing portion and a second pump housing portion. The pump dome is a part of the first pump housing portion and the pump chamber base is a part of the second pump housing portion. In one example, a container includes the metering pump and an associated product dispenser.

In exemplary embodiments of the present invention, various novel dispensing devices can be provided. Such devices can involve a range of sprayer heads and sprayer/foamer systems incorporating such heads. Novel sprayer/foamer heads can include buffers of various types. By using a buffer, a user need not continually be pumping the device in order for the device to be spraying or foaming. In exemplary embodiments of the present invention, such a buffer can be spring loaded, spring loaded combination, elastomeric or gas. In exemplary embodiments of the present invention, the buffer can be in line or adjacent to a piston chamber. If adjacent, it can be connected to the piston chamber with a one way valve, to provide for spray after a downstroke of the piston has been completed, or without, to allow spraying to cease once a user releases the trigger or other actuator. In exemplary embodiments of the present invention, such novel sprayers and foamers can be mounted upside down, in various Flairomop devices, used to clean floors or the like. When using a buffer, a piston chamber can be designed to deliver greater amount of liquid per unit time than can be possibly dispensed through the nozzle or nozzles. The fraction of liquid that cannot be sent through the nozzle(s), due to their inherent restriction, can thus be sent to the buffer for dispensing after the piston downstroke has been completed. A volume of the piston chamber, a volume of the buffer, a pressure response of the buffer, the throughput of the nozzle, and the minimum opening pressure of the outlet valve can be arranged to restrict the outlet pressures of liquid droplets exiting the nozzle within a defined range.

Some embodiments are directed to a valve, including a rigid end piece that defines a center; a rod at the center of the end piece defining an axis; and a flap, wherein the flap is in one piece and has a flexible wall situated opposite a free end of the rod, the flexible wall is perforated by an orifice concentric with the end of the rod, the orifice has a contour substantially homothetic with that of the contour of the end of the rod in a plane perpendicular to the axis of the rod, the orifice has a surface below a projected surface of the end of the rod in the plane, the flap is connected to the end piece by a non-deformable fixed connection, and the flexible wall presses against the end of the rod at any point of its surface in contact with the end.

The invention relates to a dispensing device (1) having a pump device (2), which has an actuating element (5) having an output opening (12), wherein the actuating element (5) is movably arranged relative to a hearing element (6), which is connected to a pump housing (7) in a rotationally fixed manner in the usage position, wherein the actuating element (5) is rotatably arranged relative to the bearing element (6) and the bearing dement (6) has at least one protruding bridge (25) having an upper stop edge (24) and a substantially tubular portion (5) of the actuating element (5) has, on the inner surface thereof, distributed over the circumference, at least two stages (22,22, 22) defining a different displacement path, of which stages, depending on the rotational alignment of the actuating, element (5), one stage (22, 22, 22) contacts the stop edge (24) in a lower displacement position.

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.