Abstract:
A dispenser comprises a container for containing fluid to be dispensed and a manually operated reciprocating fluid pump to be secured to the container. The fluid pump includes a pump mechanism, an intake port adapted for fluid communication with liquid contained in the container, an intake liquid flow path providing fluid communication between the intake port and the pump mechanism, a discharge port, a discharge liquid flow path providing fluid communication between the pump mechanism and discharge port, a closure cap portion configured for securing the fluid pump to the container, and a seal portion engageable with the container for providing a fluid-tight seal between the fluid pump and the container. The container includes a neck having a mouth therein for passage therethrough of liquid in the container. The container further includes a flange circumscribing the neck of the container. The closure cap portion comprises a generally annular-shaped skirt, and at least three protrusions extending generally radially inwardly from an inside surface of the skirt. The protrusions are circumferentially spaced from each other along the inside surface of the skirt. The protrusions of the closure cap and the flange of the container are configured for a resilient snap-fit engagement of the protrusions with the generally downwardly facing surface of the flange when the seal portion of the fluid pump is brought into engagement with the container to releasably maintain the seal portion in fluid-tight sealing engagement with the container.
Abstract:
On a manually operated reciprocating liquid pump, comprising a plunger mounted for reciprocating movement between charge and discharge positions in a pump housing, a lock mechanism on the pump selectively locks the plunger in its charge and discharge positions relative to the pump housing. Seals are also provided that prevent leakage through the pump when the plunger is in its charge and discharge positions.
Abstract:
A trigger sprayer comprises a dispenser body, a pump mechanism adjacent the dispenser body, a trigger adjacent the pump mechanism, and a plug. The dispenser body has an intake port adapted for fluid communication with a source of liquid, an intake liquid flow path providing fluid communication between the intake port and the pump mechanism, a discharge port, and a discharge liquid flow path providing fluid communication between the pump mechanism and discharge port. The pump mechanism includes a pump element reciprocally moveable relative to the dispenser body to draw fluid in through the intake port and force it out through the discharge port. The trigger is moveable relative to the dispenser body between forward and rearward positions and is located and configured to cause the pump element to move from its first position to its second position when the trigger is moved from its forward position to its rearward position. The plug is connected to the trigger and moveable relative to the dispenser body between a blocking position in which it covers the discharge port and an unblocking position in which it is laterally spaced from the discharge port to avoid interference with the discharge of fluid through the discharge port. The trigger and plug are configured so that movement of the trigger between its forward and rearward positions causes movement of the plug between its blocking and unblocking positions.
Abstract:
A liquid dispenser comprising a dispenser body having a pump mechanism defining a variable volume fluid receiving cavity. A cylindric formation, smaller than the fluid receiving cavity, is within the cavity and a vent passageway is in fluid communication with the cylindric formation. A plunger is reciprocally moveable within the cylindric formation and is configured for moving with the pump mechanism as the pump mechanism is moved between extended and contracted positions. The plunger and cylindric formation are configured such that the vent passageway is in fluid communication with the fluid receiving cavity of the pump mechanism when the pump mechanism is in its contracted position and is configured to block fluid communication between the vent passageway and the fluid receiving cavity when the pump mechanism is in its extended position.
Abstract:
A manually operated reciprocating fluid pump comprising a pump housing, a plunger, a piston and a priming valve. The pump housing has an inner surface and a pump chamber defined at least in part by the inner surface. The pump chamber extends axially through the pump housing. The plunger is extends axially downwardly into the pump chamber. The piston is on the plunger and is reciprocally and axially slidable within the pump chamber between a bottom stroke position and a top stroke position. The priming valve is mounted on the plunger radially inwardly of the piston for movement with the plunger. It is configured to be open and thereby permit fluid to flow upward through the pump chamber when the piston stroke moves the piston downward from the top stroke position toward the bottom stroke position and configured to be closed and thereby prevent fluid from flowing upward through the pump chamber when the piston stroke moves the piston upward. A sealing plug is moveable with the plunger and is configured to seat against and seal closed the pump chamber when the piston is in its bottom stroke position to prevent fluid from flowing upward through the pump chamber. It is configured to be unseated from the pump chamber when the piston is positioned above its bottom stroke position. The priming valve and sealing plug are mounted on the plunger in a manner to prevent axial movement of the priming valve and sealing plug relative to the plunger.
Abstract:
A pressure buildup trigger sprayer contains a valve element that vents air from a pump chamber of the sprayer to the interior of a liquid container to which the sprayer is attached while priming the pump.
Abstract:
A low cost trigger sprayer has a housing with a first liquid passage containing a spinner assembly. A pump element is positioned generally horizontally such that pulling the trigger contracts or retracts the element and releasing the trigger permits the element to return to an extended position. An elastomeric spring is positioned between the housing and pump element to improve the return characteristics of the pump element. 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 upward past the neck and defines a saddle recess with the housing connected to the neck of the container and positioned forward of the upward extending container portion.
Abstract:
A dispenser assembly for dispensing liquid from a container has a dispenser operable remotely from the container by way of a tube communicating the dispenser and the liquid within the container. The dispenser assembly has a hand-held dispenser and a tube connected to the dispenser for extension into the liquid within the container. The dispenser is operable to dispense liquid from the container by way of the tube. An adaptor is secured to the container with the tube operable for extending from the dispenser, through the adaptor, and into the container. With the dispenser disconnected from the adaptor and with the adaptor secured to the container, the dispenser may be operated remotely from the container to dispense the liquid from the container.
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 dispenser assembly for dispensing liquid from a container has a dispenser operable remotely from the container by way of a tube communicating the dispenser and the liquid within the container. The dispenser assembly has a hand-held dispenser and a tube connected to the dispenser for extension into the liquid within the container. The dispenser is operable to dispense liquid from the container by way of the tube. An adaptor is secured to the container with the tube operable for extending from the dispenser, through the adaptor, and into the container. With the dispenser disconnected from the adaptor and with the adaptor secured to the container, the dispenser may be operated remotely from the container to dispense the liquid from the container. The container has a crown formed in a top wall which projects adjacent to and beyond the dispenser when the dispenser is secured to the container top wall.