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:
Oct. 13, 1987
Filed:
Oct. 21, 1986
Takeshi Morita, Amagasaki, JP;
Takio Okuda, Amagasaki, JP;
Kazumichi Machida, Amagasaki, JP;
Yoshio Sato, Inazawa, JP;
Yoshitaka Nakamura, Inazawa, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
Two metal plates 1a, 1b are projection welded together using a truncated conical projection 12 on a first one of the plates having a spherical end surface. The plates are pressed together through the projection, and a welding current pulse is applied which reaches a maximum value in less than 2 milli-seconds. The shape and dimensional limitations of the projection coupled with the high amplitude, short duration current spike result in a thin welding nugget 9 and prevent any thermal distortion of the outer plate surface due to localized overheating.