Tensioning rail applied by injection molding

US7473197B2 · kind B2 · utility

Assignee

• Joh. Winklhofer & Söhne GmbH und Co. KG · DE

Inventors

• Van T. Le · Erding, DE
• Stefan Belmer · Anzing, DE
• Alios Hinterstocker · Sauerlach, DE
• Martin Bodensteiner · Erding, DE

Key dates

• Filing date: Jun 7, 2004
• Grant date: Jan 6, 2009
• Expiry date: Aug 2, 2025

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2007/0878
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A method of producing a movable tensioning element of a tensioning device for tensioning flexible drive means, in particular for timing chain drives of internal combustion engines, the tensioning element having at least a tensioning piston and a tensioning rail made of a plastic material, with the tensioning rail being arranged on a tensioning end of the tensioning piston. A correspondingly implemented tensioning element as well as a tensioning device including such a tensioning element is provided. The method of producing the movable tensioning element includes placing the tensioning piston into an injection mold suitable for producing the tensioning rail; injecting the plastic material into the injection mold; encompassing the tensioning piston by the plastic material in certain areas thereof; and letting the plastic material solidify under formation of a positive connection between the tensioning piston and the tensioning rail.