Sample sucking device
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United States of America Patent
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Apr 28, 1998
Grant Date -
N/A
app pub date -
Dec 18, 1996
filing date -
Dec 19, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
A sample sucking device, capable of preventing possible malfunction in the automatic sucking operation and protecting against possible risks in the manual sucking operation, which comprises a pipette, an arm, an arm holder, a coiled spring, an up-and-down moving mechanism, a back-and-forth moving mechanism, a first sensor, a second sensor, and a control section. When an abnormal external force exceeding a small preset value is exerted on the pipette or the arm, the arm is forced to pivot at a rotation angle exceeding a preset rotation angle to thereby turn the first sensor OFF. When an external force exceeding a large preset value is exerted on the pipette or the arm, the arm is forced to pivot at a larger rotation angle exceeding the preset rotation angle to thereby turn the second sensor ON. Then, the control section receives an abnormality detection signal from either of the sensors to issue a moving action stop command to the up-and-down moving mechanism or the back-and-forth moving mechanism.
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