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Patent Searching and Data


Title:
WATERTIGHT APPARATUS HAVING SEALING STRUCTURE
Document Type and Number:
Japanese Patent JP3512002
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a watertight apparatus having a sealing structure which is capable of preventing an electrolytic corrosion of a watertight vessel by contact with different metals, has sufficient strength, easily and inexpensively repairable even in case of corrosion and makes the watertight vessel usable for a long period of time.
SOLUTION: An electrolytic corrosion plate 1 is watertightly sealed and mounted to a watertight vessel 7 with an O-ring 2. A sensor 4 for detecting pressure or temperature, etc., is watertightly sealed by an O-ring 5 and is mounted at the electrolytic corrosion plate 1. The electrolytic corrosion plate 1 consists of material which is lower in potential in liquid than the metal of the same kind as the metal of the watertight vessel 7 or the watertight vessel 7.


Inventors:
Aizawa, Tetsuo
Application Number:
JP2000000348093
Publication Date:
March 29, 2004
Filing Date:
November 15, 2000
Export Citation:
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Assignee:
NEC CORP
International Classes:
G01N17/02; C23F13/00; F16K27/00; (IPC1-7): C23F13/00; G01N17/02
Attorney, Agent or Firm:
藤巻 正憲