Abstract: 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.

Abstract: A manually charged fluid dispenser includes a charging cylinder disposed in the mouth of a bottle and a manually reciprocable piston carried on a charging rod which extends out each end of the cylinder. The charging rod has a differential diameter for providing hydraulic return thereof by fluid pressure in the charging tube after manual charging of the tube. The charging tube is in fluid communication with a spray nozzle mounted on the bottle and tube through a ball valve which is selectively unseatable by a cam actuated by a slidable trigger, which is hydraulically biased by a piston which is in connection with pressurized fluid at the ball valve. An alternative embodiment of the charging cylinder provides a charging rod slidable in a draw tube disposed above an end of a charging cylinder and a piston slidable therein so that fluid pressure in the cylinder will return the rod to its rest position.