Pipetting device

Details Pipetting device Pipetting device

1978-02-15

1979-02-27

Swisher, S. Clement

Measuring and testing

Measuring vessel

222309, B01L 302

Patent

active

041412516

ABSTRACT:
A pipetting device including a cylinder disposed at the lower end portion of a cylindrical housing, a piston working in the cylinder and having a piston rod secured thereto to extend through the housing, an actuating knob secured to the upper end of the piston rod, and a return spring biassing the piston rod upwardly, wherein the device further comprises a sleeve fitted screw-threadingly in the housing and engaging with the piston rod slidably but non rotatably, locking means releasably preventing rotation of the sleeve in the housing, an elongated transparent window having a scale thereon and being formed in the housing, and a datum line formed around the outer periphery of the sleeve.

REFERENCES:
patent: 3327900 (1967-06-01), Goda
patent: 3613952 (1971-10-01), Gilmont
patent: 3766784 (1973-10-01), Walker
patent: 3810391 (1974-05-01), Souvaniemi

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