Pumps – Motor driven – Magnetostrictive chamber
Patent
1987-03-23
1989-02-28
Croyle, Carlton R.
Pumps
Motor driven
Magnetostrictive chamber
417478, 310328, F04B 4308
Patent
active
048080845
ABSTRACT:
An apparatus for transferring a small amount of fluid has at least three vibration pump units which are connected in series. Each vibration pump unit has a fluid transfer pipe, a vibrator mounted on the outer peripheral surface of the fluid transfer pipe and adapted to cause the transfer pipe to vibrate in a respiring manner, an inner peripheral electrode on the inner peripheral surface of the vibrator, an outer peripheral electrode on the outer peripheral surface of the vibrator, a high-frequency voltage applying device for applying a high-frequency voltage between the inner peripheral electrode and the outer peripheral electrode thereby causing the vibrator to vibrate in respiring manner, and a fluid diode exhibiting resistance to reversing of the fluid and connected to the fluid outlet of the fluid transfer pipe in such a manner as to permit the fluid to be discharged from the fluid pipe. The adjacent vibration pumps operate with a predetermined phase difference therebetween.
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Arai Akira
Namura Kiyoshi
Tsubouchi Kuniyoshi
Yoshida Shohei
Croyle Carlton R.
Hitachi , Ltd.
Szczecina Jr. Eugene L.
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