Abstract: A trigger sprayer has a housing, a piston bore within the housing, and a piston reciprocally mounted within the piston bore. The housing further includes a flow passage through which liquid passes from a passage inlet to a passage outlet. An actuator is operable to reciprocate the piston within the piston bore between a vacuum stroke creating reduced pressure in the piston bore and a compression stroke creating increased pressure in the piston bore. A valve assembly within the flow passage controls the flow of liquid through the flow passage upon operation of the actuator. The valve assembly further comprises a check valve and a priming valve. The sprayer has a closure for mounting the sprayer to a container. The valve seat for the check valve is in a component formed separately from and operatively connected to the housing.

Abstract: 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.

Abstract: Pre-compression valve systems for trigger sprayers include one-piece valve systems having both check and pre-compression valves or multiple component valve systems.

Abstract: A trigger sprayer has a housing, a piston bore within the housing, and a piston reciprocally mounted with the piston bore. The housing further includes a flow passage through which liquid passes from a passage inlet to a passage outlet. An actuator is operable to reciprocate the piston within the piston bore between a vacuum stroke creating reduced pressure in the piston bore and a compression stroke creating increased pressure in the piston bore. A valve unit within the flow passage controls the flow of liquid through the flow passage upon operation of the actuator. The valve unit further comprises a check valve and priming valve. The check valve is shaped in a frusto-conical manner and is assembled into the check valve seat which is not part of the housing but is a separate component. The sprayer has a free spinning threaded type closure for mounting the sprayer to a container, the closure formed separately from and secured to said housing.

Abstract: Described are multi-chamber trigger sprayers and fluid dispensing apparatuses, including a sprayer housing including a pump piston and at least two pump chambers, a closure attachment configured to couple the trigger sprayer to an opening of a container, at least two fluid discharge passageways, each passageway in fluid communication with one of the pump chambers, and at least two priming valves, each configured to prevent backflow of fluid into one of the at least two fluid discharge pathways, and a biasing element configured to bias the pump piston. In some embodiments, the biasing element may be disposed outside of the closure attachment and adjacent to a pivot point of the trigger. Some embodiments of the multi-chamber trigger sprayer may be formed entirely from plastic. Other embodiments may also be disclosed and claimed.

Abstract: A trigger sprayer has a housing, a piston bore within the housing, and a piston reciprocally mounted within the piston bore. The housing further includes a flow passage through which liquid passes from a passage inlet to a passage outlet. An actuator is operable to reciprocate the piston within the piston bore between a vacuum stroke creating reduced pressure in the piston bore and a compression stroke creating increased pressure in the piston bore. A valve assembly within the flow passage controls the flow of liquid through the flow passage upon operation of the actuator. The valve assembly further comprises a check valve and a priming valve. The sprayer has a closure for mounting the sprayer to a container. The valve seat for the check valve is in a component formed separately from and operatively connected to the housing.

Abstract: A trigger sprayer has a one piece valve member that includes both an inlet valve element and an outlet valve element. The one piece valve member replaces the separate liquid inlet valve and liquid outlet valve of a conventional trigger sprayer, and thereby provides a more simplified construction for the trigger sprayer and a fewer number of component parts in the trigger sprayer.

Abstract: A trigger sprayer has a housing, a piston bore within the housing, and a piston reciprocally mounted within the piston bore. The housing further includes a flow passage through which liquid passes from a passage inlet to a passage outlet. An actuator is operable to reciprocate the piston within the piston bore between a vacuum stroke creating reduced pressure in the piston bore and a compression stroke creating increased pressure in the piston bore. A valve assembly within the flow passage controls the flow of liquid through the flow passage upon operation of the actuator. The valve assembly further comprises a check valve and a priming valve. The sprayer has a closure for mounting the sprayer to a container. The valve seat for the check valve is in a component formed separately from and operatively connected to the housing.

Abstract: A manually operated liquid foaming dispenser is attached to the top of a container of liquid and is manually reciprocated to dispense the liquid from the container as a foam. The dispenser includes a liquid pump chamber and an air pump chamber that respectively pump liquid and air under pressure to a discharge passage of the pump where the liquid and air are mixed, generating the foam dispensed from the dispenser. The air pump chamber has a tube valve controlling the discharge of air from the air pump to the discharge passage, and the air pump chamber is charged with air by opening the air pump chamber to the exterior environment of the dispenser.

Abstract: A manually operated, vertically reciprocating liquid pump dispenser is removably connectable to a bottle containing liquid and simultaneously pumps liquid from the bottle and air from the exterior environment of the dispenser and mixes the liquid with the air to produce a foam that is dispensed from the dispenser. The dispenser includes a closure connector and a rotatable collar on the connector that provides a mechanism for venting the interior of the bottle to the exterior environment of the dispenser while avoiding leakage of the liquid from the bottle, and also incorporate a mechanism for locking the dispenser to prevent unintended pumping of liquid from the bottle.

Abstract: A manually operated, vertically reciprocating liquid pump dispenser is removably connectable to a bottle containing liquid and simultaneously pumps liquid from the bottle and air from the exterior environment of the dispenser and mixes the liquid with the air to produce a foam that is dispensed from the dispenser. The dispenser includes a closure connector that provides a mechanism for venting the interior of the bottle to the exterior environment of the dispenser while avoiding leakage of the liquid from the bottle, and also incorporates a mechanism for locking the dispenser to prevent unintended pumping of liquid from the bottle.

Abstract: A manually operated trigger sprayer is constructed with a reduced number of parts and in a novel manner in which the conventional metal coil spring is replaced with a pair of plastic bowed springs that are integral with the piston rod and the pump piston is connected to the piston rod by a pivoting connection that prevents radial force components acting on the piston rod from the springs from being transferred to the pump piston.

Abstract: A trigger sprayer has a one piece valve member that includes both an inlet valve element and an outlet valve element. The one piece valve member replaces the separate liquid inlet valve and liquid outlet valve of a conventional trigger sprayer, and thereby provides a more simplified construction for the trigger sprayer and a fewer number of component parts in the trigger sprayer.

Abstract: An indexing nozzle assembly for a trigger sprayer is comprised of a nozzle base that is attachable to a sprayer housing of the trigger sprayer, a cap that is mounted for rotation on the nozzle base, and a foaming tube that is mounted for linear reciprocating movement on the cap. Rotation of the cap on the nozzle base changes liquid discharge from the trigger sprayer between an off condition and at least a spray condition. In the spray condition of the nozzle cap, the foaming tube can be manually pulled and extended from the nozzle cap. With the foaming tube extended from the nozzle cap, the liquid discharge from the nozzle assembly in a spray pattern comes into contact with an interior surface of the tube and generates a foam discharge from the nozzle assembly.

Abstract: A manually operated trigger sprayer includes U-shaped springs that bias the trigger sprayer trigger away from the trigger sprayer pump chamber, where the U-shaped springs are connected to a piston rod by a snap-fit connection. The connection includes a compressible forward end of the piston rod that is pressed through an opening on the forward end of the spring to connect the piston rod to the spring. The rearward end of the spring is connected to the sprayer housing by a curved surface that engages around an exterior surface of the pump chamber.

Abstract: A manually operated vertically reciprocated pump dispenser has a simplified construction with two separate pumps that pump two separate liquids from a container and keep the two separate liquids separated from each other as they are pumped through the dispenser, mixing the liquids for the first time in a discharge passage of the dispenser just prior to the mixed liquids being discharged from the dispenser. The dispenser has a rotatable sleeve that covers the two pumps and is rotated to lock and unlock a dispenser head that operates the two pumps.

Abstract: A manually operated vertically reciprocated pump dispenser has a simplified construction with two separate pumps that pump two separate liquids from a container and keep the two separate liquids separated from each other as they are pumped through the dispenser, mixing the liquids for the first time in a discharge passage of the dispenser just prior to the mixed liquids being discharged from the dispenser. The dispenser has a rotatable sleeve that covers the two pumps and is rotated to lock and unlock a dispenser head that operates the two pumps.

Abstract: A manually operated trigger sprayer is constructed with a reduced number of parts and in a novel manner in which all of the component parts of the sprayer are constructed of a plastic material. The construction of the trigger sprayer replaces the conventional metal coil spring in the pump chamber with a pair of plastic bowed springs that are integral with the piston rod and are positioned outside the pump chamber. Constructing all of the sprayer parts of a plastic material enables a cost efficient recycling of the parts, which does not require disassembling the parts to remove a metal spring.

Abstract: A manually operated trigger sprayer includes a feature that limits the forward pivoting movement of the trigger. By limiting the forward pivoting movement of the trigger, the novel construction of the trigger sprayer prevents the trigger from engaging against the nozzle assembly attached to the sprayer housing of the trigger sprayer and potentially dislodging the nozzle assembly from its attachment to the trigger sprayer housing.

Abstract: A cap closure that dispenses liquid from a liquid container has a cylindrical base that is removably mounted on the liquid container. A valve spout is mounted on the base for linear reciprocating movement. A valve actuator is mounted on the base for rotation. The spout is movable between closed and opened positions where in the opened position liquid can be dispensed through the spout and in the closed position the liquid is blocked from passing through the spout. The actuator is operatively connected to the spout whereby rotation of the actuator between first and second positions relative to the cap base moves the spout between the respective closed and opened positions of the spout on the base.