Abstract:
A manually operable trigger sprayer is capable of dispensing a liquid with the trigger sprayer held in an upright orientation, in a downturned orientation and in an inverted orientation. In operation of the trigger sprayer in all three orientation positions, the liquid in the container to which the trigger sprayer is attached is prevented from leaking through the vent passage of the trigger sprayer.
Abstract:
A low cost trigger sprayer has a housing with a first liquid passage containing a spinner assembly. An elastomeric pump element is positioned generally horizontally such that pulling the trigger retracts the element and releasing the trigger allows the element to extend. The sprayer includes a low cost spinner assembly and low cost valving to control the flow of liquid within the sprayer. In one aspect of the invention, the housing has front and rear sections with the rear section having a saddle portion and being hinged to the front section for pivotal movement from an open position for molding the housing to a closed position for operating the sprayer. In another aspect of the invention, the container has a rear portion which extends upwardly past the neck and defining a saddle recess, with the housing connected to the neck of the container and positioned forwardly of the upwardly extending container portion. The sprayer may include an elastomeric spring for biasing the pump element in the extended position.
Abstract:
A fluid discharge apparatus for imparting a stream configuration to a current of fluid. The fluid discharge apparatus includes a nozzle containing a passageway having at least a receiving portion with a substantially rectilinear cross-section and an issuing portion with a substantially curvilinear cross-section, such that a fluid current passing through the passageway emerges therefrom in a stream configuration.The nozzle may be pivotably connected to a second nozzle. The second nozzle is adapted for incorporation into a sprayer-type fluid dispenser, and contains a second passageway. Pivoting of the first nozzle towards, and its consequent attachment to, the second nozzle brings the first and second passageways into sealed communication. This permits the fluid current generated by the sprayer apparatus to be dispensed as either a spray, when the first nozzle is not attached to the second nozzle, or as a stream, when the first nozzle is so attached.
Abstract:
The actuating lever of the dispenser has an outlet valve flap integral therewith which moves in a shearing action across the outlet of the discharge spout as the actuator is returned to its standby position such that the returning valve flap cleanly slices through the bead of viscous product adhering to the spout and this fully separates the dispensed bead of product from that remaining behind in the spout. A lost-motion action permits the valve flap to uncover the spout outlet before further depression of the actuating lever shifts the pumping piston through its dispensing stroke to force product out the spout.
Abstract:
The collar of the pump clamps the top wall of a closure against an underlying, external flange on the pump body, and although the collar is always a fixed, predetermined distance from the flange, a variety of closures with differing top wall thicknesses may be accommodated by the collar because of the yieldable nature of an integrally depending element at a lower periphery of the collar that makes the actual clamping engagement of the collar with the closure. Such element may be defined by an annular series of separate, deflectable segments around the periphery of the collar or by a continuous annular surface capable of deflecting away from the lip but maintaining forcible engagement with the top wall of the closure at all times.
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 is provided with a passive venting system of simplified and inexpensive construction. A gas permeable, liquid impermeable membrane is positioned over a vent opening in the trigger sprayer housing and prevents the leakage of liquid from a container attached to the trigger sprayer, while allowing the venting of air from the exterior of the trigger sprayer to the container interior. The membrane is secured to a vent opening surface of the sprayer housing that is surrounded by a vent side wall that protects the vent membrane.