Misuzuerie Co. Ltd.

Hidenori Okuyama

Tomonobu Tomita

Katsumi Aoyagi

Takeyuki Satoh

A liquid feeding and dispensing apparatus having a disposable whole liquid container unit that can be immersed in a sterilizing tank for cleaning. The liquid container unit has an elastic liquid container, a pump, and valves integrated therein that is separate from a holder unit for driving a pump. The liquid container unit has an expansible liquid container filled with a liquid, a liquid feeder connected with an outlet from the liquid container at one end, and a pump chamber having one end connected with the other end of the liquid feeder. The pump chamber has a flexible wall plate, and a feeding tube connects with an outlet end of the pump chamber. A pump holder unit has a pump drive body detachably holding the pump chamber for deviating or flexing the flexible wall plate to change the volume of the pump chamber. A pinch valve has a groove for inserting and receiving the feeding tube to pinch the feeding tube closed when not feeding the liquid. In an alternate embodiment the pump chamber is sealed by a projection on the inside of the flexible wall plate.

Controlled liquid dispensing apparatus

A pump is comprised of a piezo-electric vibrator mounted in a casing. The piezo-electric vibrator is coated with an elastic elastomer layer, and a peripheral part of the elastomer layer is secured to the casing within the casing. Suction and discharge of fluid is performed by means of piezo-electric vibrator vibrated by applying alternative current voltages between electrodes of the piezo-electric vibrator. The vibration of the piezo-electric vibrator is performed smoothly to produce and high discharge volume and discharge pressure can be produced.

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Hinagahigashi, Japan

Hidenori Okuyama