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US 6,601,433 B2Granted
Hand-held pipette
AssigneeVistaLab Technologies, Inc.
InventorsJeffrey W. Kriz, Richard E. Scordato
Life of this patent
Estimating the term…
Abstract
Hand-held pipettes are provided which have automatic volume setting and either manual or power assisted piston operation. Power assisted piston operation may be achieved with a fly-by-wire operation wherein movement of a plunger button is detected and used to control a drive for the plunger. A data transfer capability in at least one direction may also be provided for the pipette.
Claims15
A hand-held pipette including:
- a manually-driven piston mechanism for aspirating and dispensing fluid;
- and
- an internal automatic volume setting mechanism which includes a stroke control stop for said piston mechanism and a mechanism for automatically setting said stop.
A hand-held pipette including:
- a tip receiving nozzle;
- a manually controlled piston connected to the tip receiving nozzle to apply negative aspirating and positive dispensing pressure to said nozzle;
- a stroke control stop for said piston;
- and
- an internal apparatus which automatically controls the position of said stop, and thus the volume of fluid aspirated.
2 more elements
Dependencies are inferred from the claim text.