Volume adjustable manual pipette with quick set volume...

Details Volume adjustable manual pipette with quick set volume... Volume adjustable manual pipette with quick set volume...

2007-02-13

2007-02-13

Gordon, Brian R. (Department: 1743)

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

C073S864140, C073S864180

Reexamination Certificate

active

10751203

ABSTRACT:
A volume adjustable pipette, comprising a plunger mounted for movement in a housing to and from a stop to aspirate a fluid into and dispense the fluid from a tip extending from the housing. An axially moveable volume setting member in the housing defines the stop and a volume setting for the pipette and is axially moveable by a user turnable volume setting member. Turning of the volume adjusting member also controls a coarse volume setting means and a fine volume setting means, the course volume setting means being responsive to a relatively small turning of the volume adjusting member for moving the volume setting member a relatively large axial distance and the fine volume setting means being responsive to a relatively large turning of the volume adjusting member for moving the volume setting member a relatively small axial distance.

REFERENCES:
patent: 3766784 (1973-10-01), Walker
patent: 3853012 (1974-12-01), Scordato et al.
patent: 4020698 (1977-05-01), D'Autry
patent: 4096751 (1978-06-01), Withers et al.
patent: 4466298 (1984-08-01), Tervamaki et al.
patent: 4909991 (1990-03-01), Oshikubo
patent: 5012682 (1991-05-01), Sabloewski
patent: 5018394 (1991-05-01), Gilson
patent: 5413006 (1995-05-01), D'Autry
patent: 6428750 (2002-08-01), Rainin et al.
patent: 2002/0041833 (2002-04-01), Telimaa et al.

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