Apparatuses and techniques are provided for dispensing fluid from a dispenser that includes a flexible membrane having different levels of pliability according to a voltage applied to the flexible membrane. According to some embodiments, a biasing device, such as a spring, is disposed on a first side of the flexible membrane and is configured to apply pressure to the flexible membrane. When a first voltage is applied to the flexible membrane, the flexible membrane becomes sufficiently pliable to enable the spring to flex the flexible membrane, pushing the flexible membrane into a pumping chamber disposed on the opposite side of the flexible membrane relative to the spring. The fluid is stored in the pumping chamber and the flexing of the flexible membrane causes the pumping chamber to compress. Such compression of the pumping chamber forces the pumping chamber to dispense the fluid through a pump outlet.

A device, system, and method for dispensing water to moisten and soften toilet paper tissue, thereby to create an adhesive wipe and to provide a thorough surface cleaning, includes, in at least one embodiment: a water reservoir, a water reservoir locking lid and key, a dispensing actuator, a dispensing port, a wall mount plate, a dispense cup for a predetermined volume of water to use for each metered release of water from the dispenser, and a dispensing valve.

A dispenser includes a front panel that can be opaque, and a body that includes a sidewall extending from a rear wall. Further, the front panel is coupled to the body and an interior cavity is formed therebetween. The sidewall includes an illuminating portion and a viewing portion. The illuminating portion is translucent and the viewing portion is transparent. The viewing portion is located between the front panel and the rear wall and the viewing portion and the illuminating portion indicate a refill status.

A system for dispensing a personal care fluid, such as a hand soap or the like. The system includes a dispenser and a refill cartridge. The dispenser includes a dispenser body having a refill cavity and a dispenser lid configured to be coupled to the dispenser body. There may be a pump sub-system mounted to the dispenser lid, or alternatively the personal care fluid may be dispensed by squeezing the dispenser and refill cartridge. The refill cartridge is configured for slidable insertion into and removal from the refill cavity of the dispenser body. The personal care fluid system is designed so that a user can readily and easily change out/replace the refill cartridge for use with a common dispenser, dispenser lid, and pump sub-system.

Exemplary dispensers and refill units having collapsible outlet tubes are disclosed herein. An exemplary refill unit includes a container, a pump having an outlet that is movable in a reciprocating motion and a flexible tube. A first end of the flexible tube is in fluid communication with the outlet of the pump and a second end connectable to a dispenser. When the second end is connected to a dispenser, the second end is stationary and movement of the pump outlet away from the second end causes the pump to dispense fluid and movement of the pump outlet toward the second end causes the flexible tube to collapse.

A dispenser for pasty products having a fixed head that has a dispensing duct for dispensing a product, a pump with an elastically deformable cap, a manually-operated actuator, a separating wall with a suction inlet, and a suction valve cooperating with the suction inlet. The suction valve has a valve body and a plurality of tabs that bend and open the suction inlet in a product suction step, and close the suction inlet in a product dispensing step.

A foam dispenser includes a housing, a drive motor, and a foam pump. The foam pump includes a pump housing, and a molded multi-chamber diaphragm. The molded multi-chamber diaphragm includes a liquid pump diaphragm having a liquid pump stem and two or more air pump chambers each having an air pump stem. The length of the liquid pump stem is longer than the air pump stem. The foam pump further includes one or more outlet valves, a mixing chamber, an outlet for dispensing foam wherein the outlet is in fluid communication with the foam cartridge; and an actuator for sequentially actuating the liquid pump chamber and the two or more air pump chambers, wherein there is lost motion between the actuator and the liquid pump diaphragm.

A foam dispenser includes a housing, a drive motor, and a foam pump. The foam pump includes a pump housing, and a molded multi-chamber diaphragm. The molded multi-chamber diaphragm includes a liquid pump diaphragm having a liquid pump stem and two or more air pump chambers each having an air pump stem. The length of the liquid pump stem is longer than the air pump stem. The foam pump further includes one or more outlet valves, a mixing chamber, an outlet for dispensing foam wherein the outlet is in fluid communication with the foam cartridge; and an actuator for sequentially actuating the liquid pump chamber and the two or more air pump chambers, wherein there is lost motion between the actuator and the liquid pump diaphragm.

Exemplary compact multi-chamber diaphragm pumps and dispensers for dispensing foam soap or sanitizer are disclosed herein. An exemplary pump for pumping soap or sanitizer and air separately to be mixed remote from the pump and dispensed as a foam includes a liquid pump diaphragm and a dual flapper valve, wherein a first of the dual flapper valves is a liquid inlet valve and a second of the dual flapper valves is a liquid outlet valve. The pump further includes two or more air pump diaphragms and a valve plate. The valve plate has a liquid inlet passage, a liquid outlet passage, a liquid outlet valve seat, two or more air inlet passages, two or more air inlet valve anchors and two or more air inlet valves secured to the valve plate. A pump manifold is also included, the pump manifold includes a liquid inlet valve seat.