The present invention relates to a powder dispensing container. When a button is pressed, a piston formed in close contact with the inner wall of an external housing is lowered so that air in the external housing is moved to an inner housing and discharges powder flowing into the internal housing, thus it is possible to always dispense the powder consistently regardless of the amount of the powder stored in a container body.

A liquid pump capable of achieving pressure equilibrium includes a body, piston member, unidirectional input valve, unidirectional output valve, input inner-pipe, unidirectional gas-feeding hermetic-seal valve and input outer-pipe. The body has an input opening, output opening and piston opening. The piston member has a piston space communicating with the piston opening. The unidirectional input valve includes an input plug and input resilient element. The input plug abuts against the input opening. The unidirectional output valve includes an output plug and output resilient element. The output plug abuts against the output opening from outside. An input channel of the input inner-pipe communicates with the input opening. Direction of gas-flow between the unidirectional gas-feeding hermetic-seal valve and the input inner-pipe is opposite input direction of the input channel. The input outer-pipe has an input portion communicating with the input channel. A gas-feeding-channel is defined between a gas-feeding-portion and the input inner-pipe.

A dispensing pump includes a polymer compression spring assembly, base vents and a flow baffle. The dispensing pump includes a pump base, and a dispensing head having a piston stem. The polymer compression spring assembly includes a slotted tubular spring element and first and second loading cones received at opposing ends of the slotted tubular spring element. The venting ports allow air to escape when capping the container after filling and the flow baffle reduces or prevents the product from being pulled into the pump accumulator before residual air (headspace) has been evacuated from the container during the initial priming strokes.

A dispensing pump includes a polymer compression spring assembly. The dispensing pump includes a pump base, and a dispensing head having a piston stem. The polymer compression spring assembly includes a slotted tubular spring element and first and second loading cones received at opposing ends of the slotted tubular spring element. The first loading cone is fixed relative to the pump base while the second loading cone is axially movable with the piston stem and dispensing head. The tubular spring element is disposed coaxially about the piston stem between the cones. When the dispensing head is compressed, the loading cones axially compress toward each other whereby the slotted tubular spring element radially expands to create an opposing contraction force, and in turn, an axial extension force. When released, the spring element elastically contracts to its at rest shape, returning the loading cones and dispensing head to their at rest positions.

A pump for a vial intended to contain a cosmetic product. The pump includes a dosing chamber with a variable volume defined at least partially by a deformable element between an initial state and a deformed state. The pump further includes a guiding rod passing through the deformable element, the latter sliding along the rod when it undergoes a deformation. The deformable element includes an outlet lip delimiting an outlet orifice, surrounding a section of the rod, and bearing in a sealed manner against the rod or deviating from the rod according to the pressure in the chamber. The rod includes means for maintaining the outlet lip bearing in a sealed manner against the rod when the membrane is in the initial state thereof whatever the pressure in the chamber and whatever the pressure around the pump.

Embodiments of the invention include a poly-ketonic cosmetic package for fluid dispenser systems.

A foam pump independent of spring sealing includes a gland, a connecting part, a moving part, an outer cover, an inner core, a piston, a middle sheath, a piston seat, an outer case, a bead, a spring and a straw. The gland can rotate relative to the outer cover, and is connected with the moving part located in the gland; the connecting part is fixed in an inner cavity of the gland; one end of the inner core away from the moving part extends into an inner cavity of the piston, and is movably connected with a sealing assembly on the piston along with the piston seat. The foam pump independent of spring sealing can prevent the liquid from being squeezed, and can also increase the service life of the spring and improve product competitiveness and user experience.

A discharging device for the discharge of liquid media is specified, with a pump chamber that comprises an inlet opening and an outlet opening, and with a piston that is displaceable in the pump chamber. The object is to be able to dispense a medium with high accuracy using the discharging device. For this purpose, the piston comprises a projection which enters the inlet opening after a predetermined stroke of the piston.

A seal to prevent fluid transfer using double diameters to provide a tighter seal is disclosed. The double diameter seal has a body with a first diameter containing an upper contact area and a second diameter forming a lower contact point. A notch extends into the body between the upper contact area and the lower contact point for a predetermined distance to form a transition point. In use, the first diameter is dimensioned to place a portion of the length of the upper contact area in sliding engagement adjacent to a length of the first surface. The second diameter dimensioned to place the lower contact point contacting an angled second surface of a valve.

A pump assembly includes: a cylinder open on top and bottom thereof and having a hollow portion formed therein and a first wing protruding outward from the outer peripheral surface of top thereof; a sealing part having at least a portion thereof inserted into the cylinder to at least partly seal the upper peripheral surface of the cylinder and a second wing protruding outward from the outer peripheral surface of the top thereof; a stem moving downward by means of an external force to vary internal pressure of the cylinder; an elastic member disposed between the stem and the sealing part to apply an elastic force to the stem from the sealing part; and a housing coupled to the cylinder in such a way to surround the outer peripheral surface of the upper portion of the cylinder and adapted to detachably couple the pump assembly to a container.