Glow plug and process for its manufacture

US6392199B1 · kind B1 · utility

Assignee

• BERU Aktiengesellschaft · DE

Inventors

• Max Endler · Ludwigsburg, DE
• Martin Allgaier · Ludwigsburg, DE
• Michael Haussner · Memmingen, DE
• Heinz-Georg Schmitz · Marbach am Neckar, DE
• Ulf Wyrwich · Pleidelsheim, DE
• Reinhold Grebe · Marbach am Neckar, DE
• Hans-Peter Kasimirski · Ludwigsburg, DE
• Martin Eller · Ludwigsburg, DE

Key dates

• Filing date: May 5, 2000
• Grant date: May 21, 2002
• Expiry date: May 5, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23Q2007/007
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A glow plug including a heating rod having a plug body composed of an electrically insulating plastic material, an inner pole connected to heating elements, and optionally, control elements, and an outer pole which is electrically insulated from adjoining components of the plug body by an insulative material provided between an inner and outer support tube, the inner support tube surrounding the heating rod while the plug body surrounds the outer support tube.