Micro-pipettor assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 29, 1995
Grant Date -
N/A
app pub date -
Jun 14, 1994
filing date -
Jun 14, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pipettor assembly includes a pipettor and a pipette tip. In one embodiment, the pipettor has a tubular body which defines a hollow central bore. The central bore is closed at a first end and open at a second end. A cutout penetrates a side wall of the body near the second end to expose the central bore. A resilient, flexible member sealably covers the cutout. The pipette tip is coupled to the second end of the pipettor. A liquid is drawn into the pipette tip by depressing and then releasing the flexible member. A liquid is expelled by depressing the flexible member. In another embodiment, the pipettor has an elongated body with an air passage between the second and a side portion of the body. A flexible membrane is sealably attached to the side portion of the body. A deflection of the flexible membrane will cause a change in the volume of the air passage for picking-up and expelling liquids from the pipette tip.
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