Fluid sampler with miniature single-acting pump assembly

Details Fluid sampler with miniature single-acting pump assembly Fluid sampler with miniature single-acting pump assembly

1988-12-27

1990-01-30

Chapman, John

Measuring and testing

Sampler, sample handling, etc.

Capture device

7386303, G01N 114

Patent

active

048965480

ABSTRACT:
The fluid sampler of the present invention comprises a single-acting pump assembly having a housing, an inlet port and an outlet port, a valve unit including a single inlet valve and a single outlet valve, a control diaphragm mounted in the housing to form a pumping chamber in communication with said inlet valve and said outlet valve, a reciprocative piston for reciprocating said control diaphragm, a motor for driving said piston with said piston being located in a substantially enclosed cavity separated from said pumping chamber by said control diaphragm and a damping assembly integrated in said pump housing for providing a highly damped fluid flow through said pump.

REFERENCES:
patent: 4432248 (1984-02-01), Lalin
patent: 4532814 (1985-08-01), Lalin
patent: 4576054 (1986-03-01), Lalin
patent: 4743169 (1988-05-01), Funakawa et al.

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