Cylinder pump

Details Cylinder pump Cylinder pump

1985-04-17

1986-12-02

Myracle, Jerry W.

Measuring and testing

Sampler, sample handling, etc.

Capture device

92170, G01N 114

Patent

active

046255729

ABSTRACT:
The invention provides a cylinder pump for an automatic chemical analyzer or the like, which comprises a cylinder and a plunger both made of a rigid material and coupled together in a liquid-tight sliding contact with each other without any elastic member such as an O-ring interposed between the sliding contact surfaces, whereby to constitute a pump mechanism for withdrawing and discharging liquid, the sliding contact surfaces being mirror-like surface. Ceramics are used as the rigid material of the cylinder and plunger. Hence, the cylinder pump has high discharge accuracy, long life and improved measurement precision.

REFERENCES:
patent: 2607342 (1952-08-01), Abel
patent: 4315454 (1982-02-01), Knodel
patent: 4516479 (1985-05-01), Vadasz

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