Sample sucking device

Details Sample sucking device Sample sucking device

Filed on

1996-12-18

Date issued

1998-04-28

Examiner

Raevis, Robert

Patent Class

Measuring and testing

SubClass

Sampler, sample handling, etc.

SubSubClass

Capture device

Other Related Categories

G01R 116

Type

Patent

Status

active

Patent number

057447292

Description

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.

REFERENCES:
patent: 3748911 (1973-07-01), Rousselet et al.
patent: 3858450 (1975-01-01), Jones
patent: 4927603 (1990-05-01), Fischer et al.
patent: 5455008 (1995-10-01), Earley et al.

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