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:
Feb. 26, 2008
Filed:
Jun. 17, 2004
Hidekazu Uehara, Takasago, JP;
Tanehiro Sinohara, Takasago, JP;
Takasi Nakano, Takasago, JP;
Sin Nisimoto, Takasago, JP;
Takayuki Kurimura, Takasago, JP;
Yuichi Hirakawa, Takasago, JP;
Tatsuji Takahasi, Takasago, JP;
Sin Koga, Takasago, JP;
Hidekazu Uehara, Takasago, JP;
Tanehiro Sinohara, Takasago, JP;
Takasi Nakano, Takasago, JP;
Sin Nisimoto, Takasago, JP;
Takayuki Kurimura, Takasago, JP;
Yuichi Hirakawa, Takasago, JP;
Tatsuji Takahasi, Takasago, JP;
Sin Koga, Takasago, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
In a method of manufacturing an axis seal, first, a roll of rolled metal material is cut into metal material plates of a predetermined size. Next, metal material plates are etched from both sides so as to form a predetermined size. Subsequently, the thin metal plates are arranged so as to be in a ring shape, oriented in the same direction, and are welded so as to be fixed. Additionally, during these processes, heat treatment is performed by heating rolls of rolled metal materials or metal material plates or thin metal plates at a predetermined timing, thereby eliminating residual stress (strain).