Pipettor head having standpipes open at their tops to a...

Details Pipettor head having standpipes open at their tops to a... Pipettor head having standpipes open at their tops to a...

2007-09-18

2007-09-18

Griffin, Walter D. (Department: 1709)

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

C422S063000, C422S067000, C422S068100, C422S081000, C422S105000, C435S052000, C435S054000, C435S180000, C073S863730, C073S864160, C073S864170, C073S863320

Reexamination Certificate

active

10799613

ABSTRACT:
In a preferred embodiment, a pipettor head, including: a body; one or more solenoid valves disposed in the body; each one or more solenoid valves having an outlet at a lower end and an inlet at an upper end; each one or more solenoid valves having an outlet attached to a dispensing passageway; each one or more solenoid valves having its inlet attached to a standpipe; and the standpipe having an open top communicating with an interior of a closed vacuum/pressure chamber defined in the pipettor head, the closed vacuum/pressure chamber being arranged such that vacuum or pressure may be selectively applied to the closed vacuum/pressure chamber. A method of using the pipettor head is also provided.

REFERENCES:
patent: 6150158 (2000-11-01), Bhide et al.
patent: 6372185 (2002-04-01), Shumate et al.
patent: 6506611 (2003-01-01), Bienert et al.
patent: 6637476 (2003-10-01), Massaro
patent: 2002/0142483 (2002-10-01), Yao et al.
patent: 2002/0176801 (2002-11-01), Giebler et al.
patent: 2003/0190264 (2003-10-01), Yiu

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