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:
Sep. 22, 1992
Filed:
May. 15, 1991
Akira Minase, Joetsu, JP;
Kinzo Murayama, Joetsu, JP;
Nippon Stainless Steel Kozai Co., Ltd., Niigata, JP;
Abstract
A method is disclosed for producing an electric deposition foil producing drum for producing an electrically deposited metallic foil having a high quality. An opening tip end portion (14) opened toward the inside is formed in an inner surface portion of a joint portion (13) of an outer skin (12) made from a planar material in the form of a cylinder. The opening end portion (14) is welded from inside, and subsequently, the welded portion (15) and a portion close to the welded portion are bulged outwardly. A layer is welded in a recess (17) formed by the bulging work while cooling the outer surface of the outer skin. Subsequently, the welded layer is peened under a hot or cold work. Subsequently, the peened portion (18) is annealed. It is possible to obtain further advantages by using a welding means which does not require a welding rod for the welding of the joint portion (13).