Pipette

Details Pipette Pipette

1979-10-22

1981-02-17

Swisher, S. Clement

Measuring and testing

Measuring vessel

B01L 302

Patent

active

042507553

ABSTRACT:
A pipette has an elongated body having a bore extending to the opposite ends thereof. A tube is secured to one end of the body. A plunger extends through the body with one end extending into the tube to draw liquid into the tube and discharge it from the tube. A first stop member is mounted on the plunger for rotation with the plunger and is axially movable relative to the plunger. This stop member is threaded to the body within the bore. A second stop member is mounted on the plunger and a spring biases this stop member towards the first stop member. A counter is driven by the rotation of the plunger.

REFERENCES:
patent: 4098125 (1978-07-01), Lee
patent: 4128009 (1978-12-01), D'Autry
patent: 4141250 (1979-02-01), D'Autry
patent: 4165646 (1979-08-01), Shapiro

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