Dual pipette device

Details Dual pipette device Dual pipette device

1986-12-05

1989-01-31

Castel, Benoit

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

7386332, 7386413, 7386414, 7386417, 7386487, B01L 302

Patent

active

048014346

ABSTRACT:
A dual pipette device comprises a pair of housings joined rotatably around a vertically extending axis or disposed for lateral movement, a pair of cylinders disposed respectively at lower sections of the housings, a pair of piston members extending vertically, supported by the housings or the cylinders, and respectively having lower end portions vertically slideable in the cylinders, and dropping tip fitting sections disposed at lower end of the housings or the cylinders so that the dropping tip fitting sections communicate with the cylinders. The piston members are provided with a lock member for locking them to each other when the housings are rotated or laterally moved and the distance between the piston members becomes not larger than a predetermined distance, so that the piston members are vertically slideable integrally with each other.

REFERENCES:
patent: 3853008 (1974-12-01), Hoffa et al.
patent: 3855868 (1974-12-01), Suduaniemi
patent: 4009611 (1977-03-01), Koffer et al.
patent: 4260077 (1981-04-01), Schroeder

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