Piezoelectrically actuated peristaltic pump

Details Piezoelectrically actuated peristaltic pump Piezoelectrically actuated peristaltic pump

1998-04-15

2000-06-13

Leung, Philip H.

Pumps

Motor driven

Magnetostrictive chamber

417 63, 4174132, 417488, 310328, 310330, 310331, F04B 1700

Patent

active

060741783

ABSTRACT:
A peristaltic piezoelectrically actuated fluid pump including two or more pairs of piezoelectric deformable members that are self-actuated, a flexible hose member, a pump chamber, inlet and outlet ports for communicating the pump chamber with the exterior of the flexible hose member, valves for opening and closing the ports, and a power supply is provided. The diaphragm members may include a prestressed piezoelectric element which is durable, inexpensive and lightweight as compared with diaphragm members of prior diaphragm pumps of comparable discharge capacity, and is actuated via electrical signals from an outside power source. Each pair of piezoelectric diaphragm members is actuated out of phase with the other(s) so as to allow fluid to be pumped through the flexible hose member peristaltically.

REFERENCES:
patent: 4115036 (1978-09-01), Paterson
patent: 4432699 (1984-02-01), Beckman
patent: 4519751 (1985-05-01), Beckman
patent: 5192197 (1993-03-01), Culp
patent: 5798600 (1998-08-01), Sager et al.
patent: 5816780 (1998-10-01), Bishop et al.

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