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. 29, 2015
Filed:
Dec. 06, 2012
Greif International Holding B.v., AK Vreeland, NL;
Diederik Cornelis Egbert Hoorens Van Heijningen, Europort, NL;
Paulus Jozef Tamis, Velsen Noord, NL;
Johannes Mulder, Velsen Noord, NL;
Greif International Holding B.V., AK Vreeland, NL;
Abstract
A steel drum () is manufactured from steel sheet and has a cylindrical shape with at least a bottom cover () in a sealed connection to the cylindrical shape. The steel drum includes a pattern of corrugations () on the circumferential surface of the cylindrical shape (). The pattern of corrugations () includes a plurality of corrugations () grouped in at least one cluster (), and the corrugations () have a substantially identical shape and size. Additionally, the invention relates to a method for manufacturing a steel drum () including: providing a steel sheet; creating a cylindrical shape from the steel sheet; creating a pattern of a plurality of corrugations () on the cylindrical shape such that the corrugations () are on the circumferential surface of the cylindrical shape () in at least one cluster (), and providing each of the corrugations () to have a substantially identical shape and size of corrugations () in at least one cluster (), and providing each of the corrugations () to have a substantially identical shape and size.