Measuring and testing – Particle size
Patent
1997-05-28
1999-05-18
Williams, Hezron
Measuring and testing
Particle size
73866, G01N15/02
Patent
active
059052147
ABSTRACT:
A particle detector includes: a flow cell having two chambers (A) and (B) communicating with each other via a through-hole, the chamber (A) having an inlet for a sheath liquid and the chamber (B) having an outlet for a waste liquid; a sheath liquid supplier; a nozzle for ejecting a particle-containing specimen with a tip portion of the nozzle being disposed at an appropriate position in the chamber (A), the nozzle being disposed coaxially with the flow cell and movable in an axial direction; an air cylinder for reciprocating the nozzle in the axial direction so as to switch between a sheath flow state for allowing the specimen and the sheath liquid to flow through the through-hole and a non sheath flow state for allowing only the specimen to flow through the through-hole; and a pair of electrodes for detecting a particle in the specimen when the specimen passes through the through-hole. Also, a particle analyzing apparatus including the particle detector is disclosed.
REFERENCES:
patent: 5079959 (1992-01-01), Miyake et al.
patent: 5150037 (1992-09-01), Kouzuki
patent: 5412466 (1995-05-01), Ogino
patent: 5517870 (1996-05-01), Kurimura et al.
patent: 5690895 (1997-11-01), Matsumoto et al.
"Preparation of Flow Cell For Measuring Specimen"; Patent Abstracts of Japan; Author: Ito Yuji; Publication No.: 60262041 A; Date of publication of application: Dec. 25, 1985; Application No.: 59119413; Date of filing: Jun. 11,1984.
"Flow Cell For Photometry"; Patent Abstracts of Japan; Author: Ito Yuji; Publication No.: 61035333 A; Date of publication of application: Feb. 19, 1986; Application No.: 59158515; Date of filing: Jul. 28, 1984.
Fayyaz Nashmiya
TOA Medical Electronics Co., Ltd.
Williams Hezron
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