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. 21, 1984
Filed:
Nov. 16, 1981
Yonekichi Morikawa, Shizuoka, JP;
Toshio Shimizu, Shimizu, JP;
Eiichi Yoshida, Shimizu, JP;
Tsuyoshi Konagaya, Yaizu, JP;
Keizo Hirayama, Tokyo, JP;
Daiwa Can Company, Limited, Tokyo, JP;
Abstract
An electrode roll for resistance welding comprising a fixed portion which has a disc portion at the longitudinal center part of a shaft where the disc portion and the shaft are at right angles to each other; a rotary portion which surrounds the fixed portion and has inner surfaces forming two side gaps facing the two side surfaces of the disc portion and a peripheral gap facing the peripheral surface of the disc portion, respectively; and a conductive liquid metal received in each of the gaps, where the peripheral gap is so narrow that the above conductive liquid metal may be pulled up along the gap to fill the same when the above rotary portion rotates, and the side gaps are substantially wider than the peripheral gap.