Patent · US Active

Piston for internal combustion engines, produced by means of a multi-orbital friction welding method

US8789273B2 · kind B2 · utility

8Cited by

10References

7Claims

0Family size

Assignee

KS Kolbenschmidt GmbH · DE

Inventors

Michael Albert Janssen · Mosbach, DE
Gerhard Luz · Bietigheim-Bissingen, DE
Volker Gniesmer · Alfeld, DE
Steffen Stork · Sersheim, DE
Martin Weissert · Nordhausen, DE

Key dates

Filing date	Jan 30, 2009
Grant date	Jul 29, 2014
Priority date	—
Expiry date	Mar 11, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49256
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method for producing a piston of an internal combustion engine, designed as a one-piece cooling channel piston. The piston includes an upper part and a lower part supported by corresponding circumferential joining bosses together forming a joining zone. In order to produce a bonded joint of the upper part and the lower part, the joining bosses are connected by means of multiorbital friction welding in the region of a rotationally symmetrical or rotationally asymmetrical joining zone.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.