[Object] To provide a trigger sprayer including a valve through which liquid flows with very high efficiency.

[Solution] The present invention is directed to a trigger sprayer for, in a state of being attached to a container, causing liquid inside the container to be sprayed from a nozzle part 3 through a passage by rotating a trigger part to move a piston part 5 to apply pressure to liquid inside a cylinder portion 42A of a cylinder structure 4, including: an F valve 2 provided in a passage between the cylinder portion 42A and the container; and an S valve 1 provided in a passage section between the cylinder portion 42A and the nozzle part 3, wherein the S valve 1 includes a first valve body 11 and a first valve seat 12, the first valve body 11 is oppressed against the first valve seat 12, and when the first valve body 11 moves away from the first valve seat 12 so that the S valve 1 opens, the first valve body 11 moves in the same direction as the direction that the liquid flows.

A hand cleaning liquid dispenser including a fluid level gauging mechanism with a plurality, preferably three or more, vertically spaced optical sensors located closely adjacent an external of a side wall of the reservoir to each receive electromagnetic radiation transmitted through the side wall from within the reservoir with the electromagnetic radiation sensed originating from an emitter directing the electromagnetic radiation preferably through the reservoir downwardly.

A spray bottle assembly includes a bottle having a neck, and a spray head assembly having a base cap configured to removably attach to the neck. The base cap has a feature that rotationally locks the base cap relative to the neck to constrain the spray head assembly in a predetermined plane. A multi-label system for a spray bottle includes: at least one strip, the strip including connected labels with differing information printed on each side, each label including a ring for positioning on a neck of the spray bottle. A pumping mechanism for a spray bottle includes: a unibody plunger having a sleeve section that variably inverts and overlaps an end thereof thus defining an internal volume that varies with the disposition of the sleeve section relative to the end. A pivoting head section that allows servicing of functional seal components.

Disclosed is an all-plastic spray gun, including a housing. The housing is connected to a gun body, a front end of the gun body is connected to a header cap, the header cap is connected to a water division head body, the water division head body is inserted into the gun body, the gun body is hinged to a trigger, the trigger is connected to a piston, the piston is slidably connected to a negative pressure column of the gun body, an upper end of the negative pressure column is provided with a plastic spring, the plastic spring is sleeved outside the gun body, a bottom end of the gun body is connected to a blank cap, the blank cap is connected to a large ring, a perforative suction tube is inserted into the blank cap.

The present disclosure relates to a dispenser for dispensing a liquid (LQ). The dispenser has a housing for receiving a removable container containing the liquid (LQ). Dispensing means are provided for dispensing the liquid (LQ) from the container. The dispenser includes a capacitive sensor having a sensing element for positioning proximal to an exterior of the container. A processor is provided for receiving a capacitance signal (SIG1) from the capacitive sensor. The processor is configured to estimate a quantity of liquid (LQ) in the container in dependence on said capacitance signal (SIG1). The present disclosure also relates to a method of estimating a quantity of liquid (LQ) in a container.

A dispensing apparatus in which product is dispensed by moving, preferably by manually applied forces from a user, an actuation mechanism, preferably a lever, from a first position to a second position and in which a potentiometer sensor, preferably a rotary potentiometer sensor, senses the relative movement of the actuation mechanism with time and permits the amount of fluid dispensed to be accurately calculated.

A fluid dispenser having a housing and a cover removably coupled to the housing with the cover having a right cover side wall and a left cover side wall secured together spaced laterally from each other and in which the cover side walls are resilient and deflectable laterally away from each other for disengagement of the cover from the housing.

Pre-compression valve systems for trigger sprayers include one-piece valve systems having both check and pre-compression valves or multiple component valve systems. The pre-compression valve is positioned in a vertical cylinder, and may have a flat, concave, or convex surface.

An assembly for flushing a dispenser that internally mixes a first composition and a second composition; dispensers including the assemblies are also provided.

A waste material discharging device in a sanitary appliance comprising a seat (1) and a vessel, to which the seat is pivotally connected, having an opening for conveying and collecting the waste material. The device comprises a roller (4) rotatable in only one direction about its axis, integral to the seat (1) and placed therebelow at said opening, scraping means (5) stationarily arranged parallel to the roller (4) and substantially in contact to the surface of said roller, driving means (11), operable by a user, for driving unidirectional and intermittent, axial angular displacements to the roller, and means for dispensing (15, 18) a cleansing and sanitizing liquid, directed toward the surface of the roller (4) and driven by the same roller rotation driving means (11).