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. 27, 1992
Filed:
Oct. 22, 1991
Toshiaki Sakka, Yokohama, JP;
Tosoh Corporation, Shinnanyo, JP;
Abstract
A nozzle device for supplying washing liquid to a reaction vessel holding a carrier therein and for discharging a liquid from the reaction vessel. The nozzle device comprises a cylindrical outer tube having a lower end in a shape of a cone without a vertex and having an axial through-hole in opposition to the reaction vessel and an upper end communicating with a suction device for discharging the liquid. The nozzle device further comprising a cylindrical inner tube inserted loosely in the outer tube, reaching the through-hole of the outer tube, fitting tightly, practically without a gap therebetween, to the axial through-hole at the lower end, and communicating with a washing liquid-supplying device at the upper end thereof to form by itself a supply path for the washing liquid. The nozzle device also includes a liquid discharge path formed between the outside wall of the inner tube and the inside wall of the outer tube. The cone-shaped portion of the outer tube having one or more slits for introducing the liquid from the reaction vessel to the liquid-discharge paths and at least a part of the cone-shaped portion of the outer tube being made of or coated with a fluoro resin.