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:
Jan. 18, 2005
Filed:
Feb. 05, 2003
Applicants:
Kazutaka Okamoto, Hitachi, JP;
Satoshi Hirano, Hitachi, JP;
Masahisa Inagaki, Hitachi, JP;
Yasuhisa Aono, Hitachi, JP;
Inventors:
Kazutaka Okamoto, Hitachi, JP;
Satoshi Hirano, Hitachi, JP;
Masahisa Inagaki, Hitachi, JP;
Yasuhisa Aono, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 2012 ;
U.S. Cl.
CPC ...
Abstract
Different metallic materials are joined in such a manner that friction heat generated by friction between a rotating probe made of a hard material and one of the metallic materials having a lower mechanical strength or a lower melting point than the other to effect plastic flow of the one material and the probe is inserted into a pit formed in a joint zone of the other material to fill the pit with the plastic flow material.