Piezoelectric fluid pump

Details Piezoelectric fluid pump Piezoelectric fluid pump

1996-05-22

1999-05-25

Freay, Charles G.

Pumps

Motor driven

Electric or magnetic motor

417322, F04B 1700

Patent

active

059064811

ABSTRACT:
A piezoelectric fluid pump includes a stationary pump base and a plurality of piezoelectric elements arranged in parallel on the stationary pump base, each of the piezoelectric elements having, in a polarizing direction thereof or in a direction perpendicular to the polarizing direction, a first end fixed to the stationary pump base and a free, second end. The free, second ends of respective pairs of adjacent the piezoelectric elements are connected to each other, for respective units of the fluid pump. Between the pair of piezoelectric elements and between the stationary pump base and the connecting means, pressure chambers are defined. There are gaps are between walls of the piezoelectric elements and walls of piezoelectric elements of adjacent units.

REFERENCES:
patent: 4216477 (1980-08-01), Matsuda et al.
patent: 4752788 (1988-06-01), Yasuhara et al.
patent: 4842493 (1989-06-01), Nilsson
patent: 4938742 (1990-07-01), Smits

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