The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 1988
Filed:
Apr. 22, 1986
Riichiro Suzuki, Kyoto, JP;
Horiba, Ltd., Tokyo, JP;
Abstract
An apparatus for measuring particles contained in a sample liquid has a cylindrical cell having an incident light transmitting portion, a transmitted light transmitting portion diametrically aligned with the incident light transmitting portion, and a light transmitting portion at an angle to the diameter between the incident light transmitting portion and the transmitted light transmitting portion. An inlet at one end of the cell admits sheath flow liquid having the same index of refraction as the sample liquid, and an outlet is provided at the other end of the cell. A rectifying cylinder is positioned within said cell and has the axis extending between the inlet and the outlet and perpendicular to the diameter between the incident light transmitting portion and the transmitted light transmitting portion and having light passing holes therein aligned with the incident light transmitting portion, the transmitted light transmitting portion and the scattered light transmitting portion, the cylinder causing sheath flow liquid to flow smoothly from the inlet to the outlet at a predetermined pressure thereof and directed toward said outlet and upstream of the diameter and discharges sample liquid into the cylinder at a pressure higher than the predetermined pressure. An optical detector optically connected to the scattered light transmitting portion detects light scattered from particles in the sample liquid.