摘要:
The invention relates to a liquid dispensing device comprising: a piston chamber; a piston that is moveable within the piston chamber to pressurise a liquid to be dispensed; a nozzle with a defined throughput for dispensing the liquid; an outlet valve having a defined minimum opening pressure arranged between the piston chamber and the nozzle; and a prime valve for priming the device. The prime valve may be mechanically operable and may be arranged on or in the piston. The liquid dispensing device may further comprise an operating member, which may protrude from an end wall of the piston chamber and which may be arranged to move the prime valve from a closed position to an open position when the moveable piston is near or at an end of its stroke. The outlet valve may be configured to minimize a difference between its opening pressure and its closing pressure. It may comprise a dome and the dome may have a stiffness which varies in radial direction.
摘要:
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.
摘要:
Systems and methods to dispense various liquids, foams and sprays, of various viscosities, such as, for example, paints and stains, from a self-contained wearable apparatus are presented. These devices use the "bag within a bag" or inner container/outer container Flair® technology. A device can be provided that is portable and self-contained, can be worn by a user, and can utilize pre-filled containers of the product to be dispensed, thus obviating use of a separate paint container to which a user is effectively tethered. Novel activation mechanisms allow the system to intelligently sense when a user desires actuate/deactuate the device. These mechanisms incorporate fail-safe sensors that lock out the on/off switch if a user's hand is not sensed as actually holding the paint brush. Various Flair® bottles can be used, with various nozzles, brushes, rollers and other dispensing devices. Novel performs for the manufacture and blowing of multi-layer Flair® bottles are also presented, as well as details of multi-layer Flair® systems and their assembly.
摘要:
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's 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.
摘要:
A device for dispensing a medium from a container is presented. In exemplary embodiments of the present invention, an exemplary container (2) has at least one feed opening (10) connectable to the container by means of coupling means (8), a dispensing conduit (12) manufactured from substantially flexibly deformable material, and a closing means (18) for a substantially air-tight closing of the dispensing conduit therewith. In exemplary embodiments of the present invention methods for the manufacture of such exemplary dispensing devices can include injection molding the coupling means and the dispensing conduit as a perform, and stretching, blowing or any combination of stretching and blowing a portion of the preform so as to obtain a substantially flexibly deformable, thin-walled dispensing conduit. Alternatively, for example, the coupling means (8) and the dispensing conduit (12) can be separately generated, and later unified or joined.
摘要:
The invention relates to a squeeze bottle (1), which consists of a resiliently deformable outer container (2) with a dispensing opening (3) and a flexible inner container (4) connected to the outer container (2) close to the dispensing opening. The dispensing opening is provided with a valve (7) comprising a first non-return valve (9). The outer container (2) further has an aerating opening (10) closable by a second non-return valve (12). The inner container (4) is also connected to the outer container (2) at the position of the aerated opening (10). A sleeve (15) which the second non-return valve (12) is received can be arranged around the aerating opening (10). This sleeve (15) can be mounted in a foot (17) supporting the outer container (2). The second non-return valve (12) can be integrated with the inner container.
摘要:
Various uses of a gas-filled resilient body are disclosed. The gas-filled resilient body may be used as a valve member, as a spring or as a gas-propelled dispenser.
摘要:
The invention relates to a system for dispensing liquid foam, in particular a direct foam cleaning product, comprising a container for the liquid and a dispensing apparatus connected to the container. Here, the dispensing apparatus comprises a pump comprising a pump chamber in fluid communication with the container and a piston arranged in the pump chamber, the piston and pump chamber being movable with respect to one another; an outlet channel connecting the pump chamber to a nozzle; a pre-compression valve arranged between the outlet channel and the nozzle; and a buffer comprising a buffer chamber connected to the outlet channel, the buffer chamber including a compressible variator arranged therein for varying the usable volume of the buffer chamber; wherein the nozzle, the buffer and the pump are configured and dimensioned such that the foam is dispensed in a predetermined spray pattern.
摘要:
In exemplary embodiments of the present invention, various new generation dispensing devices can be provided. Such devices are vertically aligned, provide greater than 1.0 cc per piston stroke, and can involve a range of sprayer heads and sprayer/foamer systems incorporating such heads. Such novel sprayer heads can include a novel stretched piston, or, for example, the standard separate piston and piston chamber configuration. By using integration of parts, and a novel dome valve, exemplary sprayers are more easily manufactured, and have better operating properties. Finally, pre-compression is such novel valves is supplied by a novel dome valve with binary behavior, and minimal hysteresis.
摘要:
Improved pre-forms for Flair and Flair-type applications are presented. In exemplary embodiments of the present invention, if two different materials which do not bond together are used to make a pre-form, then such a pre-form can be made by a bi- injection process, using the same mold. In such exemplary embodiments, first the outer pre-form can be fashioned, and then the inner pre-form can be molded through a center hole provided at the bottom of the outer pre-form. The two pre-forms are then connected to each other. The two materials can be different, such as PET and a polyolefin or polyamide, or for example, they can even be the same, such as PET/PET, if steps are taken to prevent their bonding during the molding of the second pre-form layer. In such a process, a non-stick coating can be sprayed on the surface that will be between the pre-forms, where the second perform will touch the first one, and after such application, the second container can be molded, also in a 2C process. The order of manufacture can be either outer then inner, or inner then outer, in various exemplary embodiments. If outer then inner, the non-stick coating can be sprayed on the inside of the first molded outer perform, followed by molding of the inner prefrom. If the reverse, the non-stick coating is sprayed on the outside of the first molded inner perform, then followed by the molding of the outer perform. The material from which the inner container is made, the degree of shrinkage it will experience relative to the outer container, and the concomitant maximum hot fill temperature it can thus support, can all be designed for a given application, use or range of uses.