| 摘要 |
An atomizing dispenser utilizes a vertical hollow elongated body with an upper section defining a first hollow vertical cylinder and a lower section defining a second outer hollow vertical cylinder having a diameter smaller than that of the first cylinder and a third inner hollow vertical cylinder concentric with and spaced inwardly from the second cylinder. The lower ends of the second and third cylinders are joined together. The upper end of the third cylinder has an aperture. A hollow piston is vertically movable with the lower end of the piston slidably engaging the inner surface of the upper section of the body. A vertically movable vertical member has an upper section extending through the lower end of the piston into its interior, an enlarged integral middle section and a further enlarged integral lower section. The lower section defines a fourth vertical hollow cylinder, disposed between the second and third cylinders, having an open lower end and an inwardly extending horizontal shoulder at its upper end. Spring means disposed within the body bears against the joined lower ends and against said shoulder. A pump chamber defined by a hollow vertical region bounded by adjacent portions of the body, member and piston has a first port for fluid entry and a second port for fluid discharge. An actuator device is disposed above and engages the piston in a normal fully raised position at which both chamber ports are sealed and the spring means is in fully extended position. The device, when subjected to downward pressure, establishing a force which moves the piston and member downwardly with the piston and middle member section being disengaged, opening the second port, the first port being closed When the downward pressure is released, the piston and member are moved upwardly, the first port is opened and the second port is closed.
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