Dual chamber micropump having checkvalves

Details Dual chamber micropump having checkvalves Dual chamber micropump having checkvalves

2005-07-26

2005-07-26

Tyler, Cheryl (Department: 3746)

Pumps

Expansible chamber type

Having pumping chamber pressure responsive distributor

C417S571000, C417S563000, C417S567000, C417S413200, C417S413300

Reexamination Certificate

active

06921253

ABSTRACT:
A micropump has two chambers separated by an actuator for causing fluid to flow in the chambers. Each chamber is equipped with a ball that acts as a valve for allowing flow in a desired direction. The balls are heavier than the fluid being pumped, and reside at an interface between the chambers and passages feeding fluid into the chambers and provide a tight seal between the chambers and passages feeding the chambers when fluid pressure forces the fluid back toward the feeding passages.

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