Abstract:
A manually operated reciprocating fluid pump configured to be secured to a container's mouth comprises a dispenser body and a lower member connected to the dispenser body. The dispenser body has a pump mechanism, a discharge port, and a discharge liquid flow path providing fluid communication between the pump mechanism and discharge port. The lower member is of a molded one piece construction and comprises a housing portion and a seal portion. The housing portion has an intake port adapted for fluid communication with liquid contained in the container. The housing portion at least in part defines an intake liquid flow path providing fluid communication between the intake port and the pump mechanism. The seal portion is engageable with the container and is shaped and configured for providing a fluid-tight seal between the lower member and the mouth of the container. The seal portion is of a first material and the housing portion is of a second material different from the first material. The first material cooperates with the second material in a molded configuration to maintain securement of the seal portion to the housing portion.
Abstract:
A manually operated pump comprises a pump housing and a plunger. The pump housing has a pump chamber and an intake port. The plunger extends into the pump chamber. A 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 fluid pump further includes a priming valve, a check valve, a sealing plug, and a plug seat. The priming valve permits 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 prevents fluid from flowing upward through the pump chamber when the piston stroke moves the piston upward from the bottom stroke position toward the top stroke position. The check valve has a valve seat and a moveable valve member moveable between a closed position in which the moveable valve member moveable between seated and unseated positions. The plug seat is downstream of the check valve and upstream of the priming valve. The sealing plug is configured to seat against the plug seat and seal closed the intake fluid flow path when the piston is in its bottom stroke position to prevent fluid from flowing upward through the intake fluid flow path. The moveable valve member of the check valve and one of the sealing plug and plug seat are of a single unitary piece.
Abstract:
A manually operated liquid dispenser having two telescoping sleeves shielding the dispenser fluid passageways from dilution and/or contamination of the fluid being dispensed by a fluid splashed on the exterior of the dispenser.
Abstract:
A child-resistant liquid dispenser, such as a trigger sprayer, includes a dispenser body, a pump mechanism having a pump piston, and a trigger connected to the pump piston so that movement of the trigger effectuates movement of the pump piston. The pump mechanism is configured to draw liquid into an intake port of the dispenser body and discharge it through a discharge port upon reciprocating movement of the pump piston. The child-resistant liquid dispenser also includes a first locking mechanism which is engageable with the pump piston in a manner to prevent movement of the pump piston when in a locked position. The first locking mechanism is configured to permit normal movement of the pump piston when in an unlocked position. The child-resistant liquid dispenser further includes a second locking mechanism. The second locking mechanism is configured to releasably engage the first locking mechanism in a manner to releasably retain the first locking mechanism in its locked position.
Abstract:
A manually operated reciprocating fluid pump configured to be secured to a container's mouth comprises a dispenser body and a lower member connected to the dispenser body. The dispenser body has a pump mechanism, a discharge port, and a discharge liquid flow path providing fluid communication between the pump mechanism and discharge port. The lower member is of a molded one piece construction and comprises a housing portion and a seal portion. The housing portion has an intake port adapted for fluid communication with liquid contained in the container. The housing portion at least in part defines an intake liquid flow path providing fluid communication between the intake port and the pump mechanism. The seal portion is engageable with the container and is shaped and configured for providing a fluid-tight seal between the lower member and the mouth of the container. The seal portion is of a first material and the housing portion is of a second material different from the first material. The first material cooperates with the second material in a molded configuration to maintain securement of the seal portion to the housing portion.
Abstract:
A manually operated pump comprises a pump housing and a plunger. The pump housing has a pump chamber and an intake port. The plunger extends into the pump chamber. A 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 fluid pump further includes a priming valve, a check valve, a sealing plug, and a plug seat. The priming valve permits 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 prevents fluid from flowing upward through the pump chamber when the piston stroke moves the piston upward from the bottom stroke position toward the top stroke position. The check valve has a valve seat and a moveable valve member moveable between a closed position in which the moveable valve member moveable between seated and unseated positions. The plug seat is downstream of the check valve and upstream of the priming valve. The sealing plug is configured to seat against the plug seat and seal closed the intake fluid flow path when the piston is in its bottom stroke position to prevent fluid from flowing upward through the intake fluid flow path. The moveable valve member of the check valve and one of the sealing plug and plug seat are of a single unitary piece.
Abstract:
A trigger sprayer comprises a dispenser body, a pump mechanism adjacent the dispenser body, and a trigger adjacent the pump mechanism. The pump mechanism including a pump element moveable relative to the dispenser body between first and second positions. The trigger is connected to the pump element and moveable between first and second positions wherein movement of the trigger to its first position causes movement of the pump element to its first position and movement of the trigger to its second position causes movement of the pump element to its second position. The trigger sprayer is configured so that a first application of force by a user is needed to move the trigger from the first position to the second position and a second application of force by a user is needed to move the trigger from the second position to the first position. The trigger has first and second finger engaging portions and a finger receiving opening for receiving at least one finger of a user. The finger receiving opening is at least partially defined by the first and second finger engaging portions. The finger engaging portions are configured and positioned so that pushing against the first finger engaging portion in a first direction moves the trigger toward its first position and pushing against the second finger engaging portion in a second direction opposite the first direction moves the trigger toward its second position.
Abstract:
A fluid dispenser is used to dispense a foaming liquid from a container either as a spray or as a foam. The dispenser comprises a housing attached to a container of the liquid, a nozzle connected to the housing, a passage extending from the container interior to the nozzle orifice, a pump positioned along the passage, a valve positioned along the passage, and a foam generator attached to the nozzle. The nozzle has an orifice through which the fluid substance is dispensed. The valve is configured for alternating movement between an open and a closed position. The foam generator is configured to move with respect to the nozzle between a foaming position and a non-foaming position and is located adjacent the nozzle orifice when in the foaming position and remote from the orifice when in the non-foaming position. Alternatively, the fluid dispenser is used to dispense a liquid from a container either as a spray or as a stream. The alternate fluid dispenser is similar to the foaming fluid dispenser except that the foam generator is replaced with a stream generator.