Abstract: There is provided a novel flow rate regulator mechanism of the type where an external flow rate regulator unit for regulating a change in gas pressure in an aerosol container is mounted between a housing and a suction pipe. The flow regulator unit 10 is mounted between the housing 41 and the suction pipe 42. A time ratio of an inlet part A, that serves as a part of passage of a content in the container, being opened is smaller as pressure of compressed gas is higher like the compressed gas at an initial stage of its use. In a stationary mode where pressure of the passage of a content is uniform, a flow rate adjusting valve 14 moves upward against a spring 15 with the aid of the uniform pressure to substantially close the inlet part A. In an actuation mode, a content in a downstream side space region of the inlet part A is first discharged to lower pressure there, so that the flow rate adjusting valve 14 moves down by the action of the spring 15 to open the inlet part A.

Abstract: A container used in an aerosol type spout unit is made usable as a container used in a reciprocating pump type spout unit. A reciprocating pump (30) is mounted on the mouth of a container (20). And an injection button (38) is depressed to push in the piston (35) of the reciprocating pump to increase the pressure in a pressure chamber (b), and the piston is pushed down with respect to a stem (37) to let the contents of the pressure chamber into the injection button through a spout passage (37a) and deliver them through a spout port (39a), while the operator removes his hand from the injection button, thus canceling the pushing-in of the pistion, and releasing the pressure in the pressure chamber to lower the pressure in the pressure chamber, the piston being pushed up to open an inlet valve (36), sucking up the contents of the container into the pressure chamber.

Abstract: The plastic cover is easily removed from a metal container to allow the plastic cover and the metal container to be separately recycled. The lip that holds the plastic cover to the metal container has two or more circumferential ends which have a lower degree of engagement than the remaining portion of the lip. A press point on the cover which transforms the circular cover into an elliptical shape is positioned on the outside of the cover opposite the circumferential ends and a shoulder is mounted inside the cover opposite the press point. The shoulder bears against the container to assist in removal of the cover. Where the cover has both an inner cylinder and an outer cylinder, a rib is employed to connect the inner cylinder of the cover to the outer cylinder of the cover and to transfer pressure from the press point to the inner cylinder.

Abstract: In the reciprocating pump P, the pressure chamber 30 is formed by an atomizing tube 15, a piston 28, and a cylinder 20. The pressure chamber 30 has a check valve 24 that opens and closes the inlet of the said pressure chamber 30 and a ball-shaped stirring material 25 moving freely in the pressure chamber 30 that stirs the mixture in the pressure chamber 30. On the other hand, pumping space is formed by the piston 28 and the cylinder 20 in the reciprocating pump P, apart from the pressure chamber 30. The pumping space 29 is occupied by the mixture pumped up when the push button 17 is returned to its home position and communicating holes are provided through which the mixture is discharged into the container 10 when the push button is pressed. The atomizer of an reciprocating pump type of the present invention can stir sufficiently and atomize a liquid-powder mixture when used.

Abstract: The disclosure relates to a so-called pressure accumulation type atomizing pump provided with no gravity-actuated check valve and having an upper hollow piston and a lower pistion adapted to be simultaneously moved downward along the inner surface of a valve cylinder, upon a depression of an atomizing push button, the upper and lower piston being adapted to pressurize the liquid accommodated by a housing chamber defined within the valve cylinder between the pistons. The increased pressure of the liquid acts to depress the lower piston to open a check valve leading to a nozzle, so that the pressurized liquid is atomized finely from the nozzle. The lower piston is so arranged as to effectively cooperate with the upper piston in sucking the liquid up during the sucking stroke of the pump and to additionally increase the sucking capacity of the pump.

Abstract: A manual spray pump comprises a cylinder consisting of different diameter portions integral with one another and extending from one another and large and small pistons having respective collars of different diameters and fitted in respective cylinder portions in elastic contact with the inner wall thereof for reciprocal movement in the axial direction. The small piston is coupled to the large piston such as to receive liquid pressure therefrom, and a valve body provided at the top of the small piston co-operates with a valve seat of the large piston to constitute an opening valve. Further, in order to control or suppress too sensitive action of the small piston under low liquid pressure when actuating the opening valve with the liquid pressure exerted from the large piston to the small piston, the small piston is provided with an integral additional piston member of a still smaller diameter or is adapted to produce a frictional force in part of its portion coupled to the large piston.