An exemplary refill unit for a dispenser includes an inverted non-collapsing container for holding a liquid. A pump housing is secured to the bottom of the inverted non-collapsing container. The pump housing includes a pump chamber for pumping fluid out of the inverted non-collapsing container. The pump housing includes an annular venting chamber. The annular venting chamber has a floor with an opening therethrough. A vent valve is located within the venting chamber. The vent valve has a first wiper seal in contact with a wall of the annular venting chamber.

A liquid dispenser has a liquid reservoir for storing liquid prior to discharge and a nozzle unit through which liquid is discharged in a discharge direction. The liquid dispenser also has an actuating handle actuable in a direction that deviates from the discharge direction in order to convey liquid from the liquid reservoir to the nozzle unit. The liquid dispenser has an inner housing to which the actuating handle is pivotably articulated, and an outer housing displaceable in a translational manner relative to the inner housing between a first end position and a second end position. The actuating handle and the outer housing have cooperating locking positions which prevent actuation of the actuating handle in the first end position and which allow actuation of the actuating handle in the second end position.

A manually operated pump (1), comprising a cup-shaped body (2) inside which a piston (3)coupled with a hollow stem (4) for the movement thereof within the cup-shaped body (2)sealingly slides, the pump being equipped with a base (5) which seals the cup-shaped body (2) and which is endowed with a hole (11) for the stem (4), the said stem (4) and the base (5) being torsionally coupled, at least part of the cup-shaped body (2) and of the piston (3) delimiting a compression chamber (6) coupled with at least one suction valve element (8) and with a delivery valve element (9), the said delivery valve element (9) being in communication with a cavity in the stem (4), a dispensing button (10) being sealingly fitted on the stem (4), the said button (10) and the stem (4) being mutually constrained so that the button rotates, in a limited manner, around an axis (A) of the stem (4) between a first dispensing position and a second closed position, in which at least one tooth (D) of the button abuts a surface (13) of a ring nut (12) so as to prevent a stem (4) stroke; the ring nut (12) can be coupled torsionally to the base (5) or to the cup-shaped body (2) in at least two alternative assembly positions, such that, if the ring nut (12) is in its first assembly position and the button (10) is in the dispensing position, a first groove (S1) of the ring nut faces the tooth (D) which can slide in it up to a first end-stroke (F1), allowing a first stroke of the stem (4) and which, if the ring nut (12) is in its second assembly position and the button (10) is in the dispensing position, a second groove (S2) of the ring faces the tooth (D) which can slide in it up to a second end-stroke (F2), allowing a second stroke of the stem (4) different from the first stroke of the stem, so that, during the assembly of the pump, the positioning of the ring nut (12) in the first or second assembly position (2) determine a first or second dispensing volume of the pump.

A manual pump (P) having a pump body (B) defining a slide cylinder (F) for a piston (K) secured to an actuator rod (S); a pump chamber (C) and an outlet valve (V) arranged between the pump chamber (C) and a dispenser orifice (O) so as to dispense the fluid from the pump chamber (C). The pump includes an inlet valve (2, 12) arranged between the pump chamber (C) and an inlet (I) of the pump (P) to take the fluid into the pump chamber (C) from the reservoir (R), the inlet valve having a movable member (2) that selectively bears against a valve seat (12), a return passage (23) enabling a fraction of the fluid that is put under pressure in the pump chamber (C) to escape therefrom without passing via the outlet valve (V). The return passage (23) creates a lack of sealing at the inlet valve.

A fluid product dispenser comprising: a reservoir (R) having a neck (1) defining at least one horizontal latching shoulder (1), a dispensing head (T) mounted on the neck (1) and comprising a dispensing member (P), and a fastening ring (F) engaging both the neck (1) and the dispensing member (P), the fastening ring (F) comprising a skirt (2) comprising at least one internal latching projection (21) that is received below said at least one horizontal latching shoulder (121), characterised in that said at least one horizontal latching shoulder (121) is formed on an oval base (11) of the neck (1) that has an oval outer wall (110) with a horizontal cross-section of generally oval shape, except at said at least one horizontal latching shoulder (121).

A contents dispensing pump is coupled to a container for accommodating the contents therein and dispenses a fixed quantity of the contents through a pumping operation. A push button that is depressed deforms a deformed pressing member, reducing the volume of a temporary reservoir and increasing pressure therein. A valve plate closes a contents outlet and a valve protrusion wheel is widened by the increased pressure such that the contents contained in the temporary reservoir are dispensed through an outlet.

A cost-effective metering dispenser configured to allow at least one component accommodated in a container, in particular in cartridge form, to be metered by a pumping unit, having an inlet valve, an outlet valve and a pumping cylinder as well as a pumping piston, which is inserted in the pumping cylinder and can be activated by an actuating element. The dispenser is economical to produce because of the straightforward construction of the pumping unit, that can be arranged in a sleeve, which continues the container and is formed in one piece with the container.

System for refilling with liquid a second inverted bottle disposed above a first bottle containing liquid via a filling interface, disposed between the two bottles, comprising a valve in two elastically deformable parts. Depending on the intensity of the application of a downward vertical force on the second bottle, the pump of this bottle is first depressed to open the vent under a first force, and, then, the valve deforms elastically under a second, more intense force in order to cause the transfer of the liquid from the first to the second bottle.

Automatic electric actuation of the pumping mechanism of a liquid dispenser apparatus is provided by configuring a hollow tube to cooperate with an electromagnetically driven actuator and further configuring the hollow tube to inter-fit with a stem of a liquid dispensing pump. Actuation of the actuator may, for example, drive the pump stem downwardly to cause a pumping action. Suitable actuators include, for example, solenoids, voice coil actuators and stepping motors.

A pump dispenser including a liquid reservoir having a removal opening, and a pump device attached to the removal opening and having a push-actuator. The pump dispenser has a cap unit with a base element fastened to the liquid reservoir, and a cap element. The cap element is pivotable with respect to the base element by a hinge. In a closed state, the cap element covers the push-actuator and the discharge opening. The cap unit has a retaining device formed by retaining contours. A retaining contour of the base element is displaced by a release surface. The retaining device can alternatively or additionally include a lifting surface protected by a protective portion.