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:
Aug. 05, 1997
Filed:
Jun. 19, 1995
Keiichi Uraki, Hitachi, JP;
Hisanori Okamura, Toukai-mura, JP;
Toshimi Matsumoto, Hitachinaka, JP;
Toshitaka Satsuta, Atsugi, JP;
Mitsuo Nakamura, Takahagi, JP;
Akira Onuma, Hitachi, JP;
Tsutomu Onuma, Hitachi, JP;
Takahiko Kato, Hitachinaka, JP;
Jun'ya Kaneda, Hitachi, JP;
Kunihiko Suzuki, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A neutron-irradiated structural material having a defect in a nuclear reactor internals is repaired by covering the structural material to be repaired with a plate to cover over a portion thereof having the defect, and then welding the plate and the structural material by locally applying pressure on the surface of the plate and adding energy to the portion to which the pressure is applied thereby to generate thermal energy in the contact surfaces between the plate and the structural material.