Sheet metal workpiece

US10137942B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• Ronald Sanders · Daxweiler, DE
• Wolfgang Eberlein · Biberach, DE
• Maurice Dietz · Gerolzhofen, DE
• Hartmut Baumgart · Bischofsheim, DE

Key dates

• Filing date: Feb 2, 2017
• Grant date: Nov 27, 2018
• Expiry date: Feb 2, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D2221/00
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A workpiece includes a plurality of knots and webs, which are formed in one piece, of a sheet metal, in particular a steel plate. Each web extends between two openings from one knot to another knot, and at least three webs meet at each knot. A plurality of the webs has a cross section, which includes at least one hardened and one unhardened area.