Bellows neck squeeze fluid dispenser

摘要

A manually actuatable fluid dispenser comprises a plastic bottle container which includes an upstanding bottle neck portion having a flexible bellows formed integrally on one side thereof operable by a reciprocal trigger member which engages the bellows through a trigger spring for exerting a sustained but limited force on the bellows, and reaction force on the trigger member, over extensive trigger actuation travel and speed. The upper end of the cylindrical neck of the container is closed by a dispenser body which includes a fluid passage having a check valve disposed therein for controlling the flow of fluid in the fluid passage. A fluid tube disposed in the bottle neck includes a seal for fluid isolation of the bottle neck from the bottle, and a check valve for allowing flow of fluid from the bottle into the bottle neck.