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:
May. 31, 2005
Filed:
Jan. 16, 2003
Yoshito Miyasaka, Nagano-ken, JP;
Masao Tokita, Tokyo, JP;
Hitoshi Karasawa, Nagano-ken, JP;
Fumitake Nishiyama, Nagano-ken, JP;
Yoshito Miyasaka, Nagano-ken, JP;
Masao Tokita, Tokyo, JP;
Hitoshi Karasawa, Nagano-ken, JP;
Fumitake Nishiyama, Nagano-ken, JP;
Sumitomo Coal Mining Co., Ltd., Tokyo, JP;
Suwanetsu Kogyo Co., Ltd., Nagano-ken, JP;
Abstract
Disclosed is a novel electric joining method and apparatus that can overcome the defects associated with the prior art while taking advantage of the technology for the pulse excited sintering process such as spark plasma sintering process or the hot-press joining process. According to the present invention, an electric joining apparatus for joining a plurality of members to be joined at the joining surfaces thereof, comprises: a pair of current-currying electrodescapable of contacting with the members so as to apply electricity to the members; a power supplyconnected to the pair of energizing electrodes for supplying the energizing electrodes with at least either one of a DC current or a pulsated current; and a pressurizing unitfor compressing each of the pair of electrodes against the joining surfaces, wherein the pair of members are sandwiched between the energizing electrodes and applied with at least either one of the DC current or the pulsated current from the power supply under a desired pressure, thus to be joined, without using a die made of graphite.