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:
Oct. 17, 1978
Filed:
Mar. 01, 1978
Toyohiko Naono, Tokyo, JP;
Nihon Denshi Kabishiki Kaisha, Tokyo, JP;
Abstract
A rotating valve body and a fixed valve body, said rotating body and fixed body having radial surfaces in sliding contact. The radial surface of the rotating body is provided with one or more internal sampling outlet ports arranged on the circumference of a circle having a center coincident with the axis of the rotating body. The side wall of said rotating body is provided with one or more external sampling inlet ports. Pairs of unlike ports are connected by ducts in said rotating body. The external sample inlet ports are connected to a sample tube, or tubes or sample suction tube or tubes which rotate together with the rotating valve body. The radial surface of the fixed valve body is provided with a single internal sample inlet port located the same distance from the axis as the internal sample outlet ports. The internal sample inlet port is directly linked to two ports in the sidewall of the fixed valve body by two ducts which join together at the internal inlet, said ducts being connected to a reagent tank via a sampling pump, changeover valve, reagent pump, and a reaction beaker via said changeover valve.