Boundary layer improvement of plate springs or undulating springs

US9003850B2 · kind B2 · utility

Assignee

• MUHR UND BENDER KG · DE

Inventors

• Bernfried Hesselmann · Wenden, DE
• Sven Roth · Oederan, DE
• Peter Buchner · Kirchheim unter Teck, DE
• Andreas Rinsdorf · Freudenberg, DE
• Thomas Muhr · Attendorn, DE

Key dates

• Filing date: Jun 22, 2007
• Grant date: Apr 14, 2015
• Expiry date: Aug 8, 2028

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F2226/02
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process for producing plate springs or undulating springs wherein surface regions which are subjected to tensile stresses when the spring is under load are provided with an internal compressive stress in the boundary layer, wherein said surface regions are rollingly compressed by a ball or roller or subjected to tensile stress and compressed by shot peening.