Abstract: A dispensing head which can be mounted on a receptacle. The dispensing head includes a pump, for surmounting the receptacle, with an actuating rod having a longitudinal axis X. A diffuser is mounted on the pump, and includes a tube opening at a dispensing orifice, with the tube being elongated along an axis Y distinct from the axis X. A lever arm controls the actuation of the pump, with the lever arm including a portion capable of coming to bear on the diffuser in order to actuate the pump. In addition, a locking member is configured such that, in a first position, the locking member allows actuation of the pump and, in a second position, the locking member prevents actuation of the pump. In a disclosed example, in the second position the tube abuts against a portion of the locking member to prevent actuation of the pump.

Abstract: A dispensing head which can be mounted on a receptacle. The dispensing head includes a pump, for surmounting the receptacle, with an actuating rod having a longitudinal axis X. A diffuser is mounted on the pump, and includes a tube opening at a dispensing orifice, with the tube being elongated along an axis Y distinct from the axis X. A lever arm controls the actuation of the pump, with the lever arm including a portion capable of coming to bear on the diffuser in order to actuate the pump. In addition, a locking member is configured such that, in a first position, the locking member allows actuation of the pump and, in a second position, the locking member prevents actuation of the pump. In a disclosed example, in the second position the tube abuts against a portion of the locking member to prevent actuation of the pump.

Abstract: A dispensing head which can be mounted on a receptacle. The dispensing head includes a pump, for surmounting the receptacle, with an actuating rod having a longitudinal axis X. A diffuser is mounted on the pump, and includes a tube opening at a dispensing orifice, with the tube being elongated along an axis Y distinct from the axis X. A lever arm controls the actuation of the pump, with the lever arm including a portion capable of coming to bear on the diffuser in order to actuate the pump. In addition, a locking member is configured such that, in a first position, the locking member allows actuation of the pump and, in a second position, the locking member prevents actuation of the pump. In a disclosed example, in the second position the tube abuts against a portion of the locking member to prevent actuation of the pump.

Abstract: A pump having a decompression device, appropriate for pumping a fluid from a container to an external environment, the pump including a jacket defining an inner space, a pumping chamber (17) housed in the inner space a piston for movement within the inner space between an extended position and a retracted position, and a decompression device which, when the piston is in the retracted position, places the pumping chamber in communication with a conduit communicating with the external environment.

Abstract: A pump having a decompression device, appropriate for pumping a fluid from a container to an external environment, comprising a jacket (1) defining an inner space, a pumping chamber (17) housed in the inner space of the jacket (1), a piston (3) for movement within the inner space of the jacket (1) between an extended position and a retracted position, and a decompression device which, when the piston (3) is in the retracted position, places the pumping chamber (17) in communication with a conduit (35) communicating with the external environment.

Abstract: A fluid pump dispenser of the loss motion piston type provides for maintaining the discharge open a slight interval at the commencement of each plunger upstroke while the pump chamber expands to retract product from the discharge passage into the chamber to thereby avoid the formation of product droplets at the exit end of the discharge. Such is effected in accordance with one embodiment by reducing the friction force acting between the piston and the pump cylinder relative to the friction force acting between the piston and the stem. In another embodiment an inlet valve assembly has a portion lying in the path of the piston which portion is connected by spring legs to a valve portion such that the restoring force of the spring legs shifts the piston together with the stem at the commencement of the plunger upstroke which maintains the discharge passage in open communication with the chamber.

Abstract: A self-resetting child-resistant trigger sprayer having a lock slidingly mounted on the trigger lever for locking the trigger sprayer. The lock has a pair of extensions, a biasing member and a projection that all extend away from the main portion of the body of the lock. The extensions engage a portion of the trigger sprayer and the biasing member provide a restoring force that enables the trigger sprayer to be self-resetting. The projection is capable of being moved by the operator of the sprayer along the trigger lever. When in a raised position, the extensions disengage from a portion of the body of the sprayer placing the sprayer in an unlocked position. However, when the projection is released, the extensions engage a portion of the piston cylinder preventing the piston cylinder from moving and the biasing member automatically force the lock into a lower, locked position on the trigger lever thus rendering the sprayer self-resetting and child-resistant.

Abstract: A fluid pump dispenser has a pump body including a pump cylinder defining a pump chamber with a valve controlled product inlet passage leading to the chamber, a manually reciprocable pump plunger having a hollow stem defining a discharge passage leading from the chamber, a pump piston mounted on the inner end of the stem for relative sliding movement, the body having a plunger return spring for biasing the plunger into a raised position, the piston being limited for relative sliding movement between discharge open and closed positions, the piston having an annular projection defining a discharge valve seated in an annular groove of a plug element fixedly mounted to the stem at its inner end. A lost-motion effect is created between the piston and the stem which closes the discharge valve during the pressure stroke and opens the discharge during the intake stroke.

Abstract: A manually actuated liquid pump sprayer, capable of being operated in both an upright position and in an inverted position, includes an adapter attached to its pump body to effect the upright and inverted spray, the adapter having first and second fluid passages extending from an adapter chamber in opposite directions for respectively inletting liquid from the container to the chamber in one of the upright and inverted positions, and being exposed to air in the container in the other such positions, the passages terminating within the chamber in opposing upright and inverted valve seats which are valved controlled by a single gravity shifting ball check valve.

Abstract: A pumping device for removing liquid from a container and dispensing it in the form of a spray includes a pump attached to the upper end of a container. A pump body is engaged in the container and a piston is movable in the container and is provided with a hollow rod projecting outside of the pump. A cylindrical cap is attachable to the container and has a pivoting actuating and dispensing element provided with a dispensing nozzle communicating through a passage with a cylindrical sheath projecting inside the actuating element. The free end of the hollow rod of the pump piston engages the sheath, and the hollow rod is flexible over part of its length as measured from its free end.

Abstract: A trigger actuator pump sprayer has a fixed portion at the rearward section of its pump body providing a hand positioner for supporting the pump sprayer when mounted to a container of liquid to be sprayed. Another portion of the rearward section of the pump body is open to facilitate manufacture of the pump body, and is closed by a hood having a fixed piston spring assembly external to the pump chamber for biasing the piston outwardly of its bore.

Abstract: A dispenser has its closure cap non-removably affixed to a cylindrical attaching portion of its dispenser body by a snap-fit engagement between a folded lower end section of the attaching portion and the closure or a plug located within the closure and in engagement with the attaching portion. The folded lower end section presents an end edge facing outwardly of the closure which engages an inwardly facing end wall of the closure or of the plug.

Abstract: A precompression pump sprayer of the type having main and secondary pump cylinders and pistons have a two-piece main piston assembly comprising a separate piston sleeve element of molded compliant material and a hollow piston stem of molded rigid material affixed thereto. The more rigid stem permits a reduction in its overall height and overall diameter, resulting in a reduction of the overall height of the pump sprayer. The cylinder has an extension in frictional engagement with the separate sleeve element of the main piston assembly for fixing the secondary cylinder thereto.

Abstract: A precompression pump sprayer comprises a hollow piston and a plunger rod having a discharge passage and a lower enlarged end forming a discharge valve seat, the rod extending through the piston for reciprocation between an inactive position and an end-of-stroke position, the piston engaging the valve seat in a discharge closed position, a primary spring biasing the plunger rod toward its inactive position, and a secondary spring biasing the piston into engagement with the discharge valve seat, the valve seat being of conical or curved shape, and the piston having a shoulder defining a discharge valve for solely contacting the valve seat along a thin circular line without sliding for quickly and cleanly valving the discharge passage open and closed during plunger actuation.