Contractile actuated bellows pump

Details Contractile actuated bellows pump Contractile actuated bellows pump

1999-01-26

2000-05-09

Freay, Charles G.

Pumps

Expansible chamber type

Plural pumping chambers

417393, 417375, 417473, F04B 4306

Patent

active

060595469

ABSTRACT:
A pump for impelling a fluid includes a first variable volume, the first variable volume having a first inlet for allowing the influx of the fluid into the first variable volume and a first outlet for allowing the efflux of the fluid out of the first variable volume and a first membrane defining at least a portion of the first variable volume. The pump also includes a first contractile actuator, for displacing the first membrane from a first position to a second position in such a manner as to vary the first variable volume and a second contractile actuator, for restoring the first membrane from the second position to the first position in such a manner as to vary the first variable volume. A first check valve is coupled to the first inlet for regulating the influx of fluid into the first variable volume through the first inlet and a second check valve is coupled to the first outlet for regulating the efflux of the fluid out of the first variable volume through the first outlet. In a preferred embodiment, at least one of the first and second contractile actuators is a linear actuator.

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