Small volume pipettor

Details Small volume pipettor Small volume pipettor

1997-12-29

1999-09-28

Le, Long V.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

422 63, 422 81, 422103, 436 54, 436180, 7386401, 7386416, 7386417, G01N 114

Patent

active

059583436

ABSTRACT:
In a preferred embodiment, a small volume pipettor, including: a plurality of pistons; a plurality of liquid delivery needles; motive device to cause one of the pistons to move axially within one of the needles to cause a liquid to be selectively drawn into and discharged from the needle; sealing apparatus disposed around the pistons to effect sealing of upper ends of the needles; assembly apparatus in which the needles and the sealing apparatus are disposed; and apparatus to permit the assembly apparatus to be removed from the pipettor as a one-piece unit. Further provided are novel apparatus to seal upper ends of the needles around the pistons.

REFERENCES:
patent: 4615468 (1986-10-01), Gay
patent: 5104625 (1992-04-01), Kenney
patent: 5236666 (1993-08-01), Hulette et al.
patent: 5648266 (1997-07-01), Astle
patent: 5660796 (1997-08-01), Sheehy
patent: 5730938 (1998-03-01), Carbonari et al.
patent: 5770160 (1998-06-01), Smith et al.
patent: 5776418 (1998-07-01), Besnier et al.

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