Step pipette

Details Step pipette Step pipette

1993-04-09

1994-07-19

Housel, James C.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

422 99, 436180, 7386413, B01L 302

Patent

active

053307216

ABSTRACT:
A step pipette, which has a dosing rack and therein a dosing toothing, a strike meshing with the dosing toothing, a filling rack connected with the dosing rack by a gear, a striker spring as well as a release member for releasing the tension of the striker spring after the last full-lenght stroke. The solution ensures that also the last liquid dose is always full.

REFERENCES:
patent: 2736551 (1978-07-01), Sturm et al.
patent: 4268481 (1981-05-01), Suovaniemi et al.
patent: 4284604 (1981-08-01), Tervamaki
patent: 4399712 (1983-08-01), Oshikubo et al.
patent: 4415101 (1983-11-01), Shapiro et al.
patent: 4554134 (1985-11-01), Tervamaki et al.
patent: 4760939 (1988-08-01), Ball et al.
patent: 4909991 (1990-03-01), Oshikubo
patent: 5104624 (1992-04-01), Labriola

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