Structuring of sliding surface portions

US9879726B2 · kind B2 · utility

Assignee

• MAG IAS GMBH · DE

Inventors

• Leo Schreiber · Schwäbisch Gmünd, DE
• Wolfgang Hafner · Brüggen, DE
• Matthias Weber · Uttenreuth, DE
• Jürgen Reingen · Eppingen, DE
• Hans-Georg Kuhn · Lindome, SE
• Emanuel Groβ · Lebach, DE
• Maarten Brussee · Eelde, NL

Key dates

• Filing date: Jun 4, 2013
• Grant date: Jan 30, 2018
• Expiry date: Aug 28, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2223/08
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In order to reduce friction of a crank shaft during operation by a large amount with low complexity through structuring sliding bearing surfaces (1) of the crank shaft through controlled introduction of microscopically small indentations (27) it is proposed for the center bearings and the crank bearings to only structure highly loaded portions of the bearing surface in circumferential direction and also in axial direction since this is already difficult to achieve in view of the operating gap towards the tool that only has a size of a few μm.