Ring-shaped or plate-like element and method for producing same

US8978557B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Helmut Hartl · Wien, AT
• Thomas Pfeiffer · Kumhausen, DE

Key dates

• Filing date: Sep 16, 2011
• Grant date: Mar 17, 2015
• Expiry date: Sep 16, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49908
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A ring-shaped or plate-like element, in particular for a metal-sealing material-feedthrough, for example for devices which are subjected to high pressures, such as igniters for airbags or belt tensioning devices, includes a feedthrough opening, whereby the feedthrough opening is located substantially in the center of the ring-shaped or plate-like element and whereby the ring-shaped or plate-like element has a thickness. The ring-shaped or plate-like element has a relief region in the area of the feedthrough opening. Further, the ring-shaped or plate-like element in the relief region has at least one thickness which is reduced by the height of the relief region and which is selected so that the feedthrough opening can be punched out of the ring-shaped or plate like element having the reducing thickness.