Hand-held pipetter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 1, 1980
Grant Date -
N/A
app pub date -
Feb 9, 1978
filing date -
Feb 9, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pipetter for drawing fluid into capillary tubes and the like. A capillary tube is forced into an adapter coupled to one end of a vented, flexible tube. A compression wheel rides in a guideway adjacent the tube, and is rolled to continuously vary the point at which the tube is compressed in the manner of a peristaltic pump. Manual rolling of the wheel away from the capillary tube produces sufficient suction in the tube to cause liquid to be drawn into it. The pumping action is reversible in that rolling the wheel back toward the capillary tube will cause fluid to be expelled. Provision is made to prevent undesirable 'compression set' as a result of long term static of the flexible tube during periods of non-use.
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Cited Art Landscape
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