Headlight for motor vehicles, especially road vehicles

US4893218A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Gerhard Dilk · Friedrichsthal, DE
• Rolf Klaiber · Reutlingen, DE
• Kurt Kreschel · Bietigheim-Bissingen, DE
• Wolfgang Krieg · Reutlingen, DE
• Heinz Ruckwied · Tübingen, DE
• Gerhard H. Ulrich · Reutlingen, DE

Key dates

• Filing date: Jun 13, 1988
• Grant date: Jan 9, 1990
• Expiry date: Jun 13, 2008

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F21S41/194
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A reflector, made from a thermosetting plastic, has three tightening faces on its crown neck that act as a catch, into which three protrusions, such as pawls, dig in a thread-like manner with teeth of the ring. As a result, the ring secures an incandescent bulb in the reflector. By means of this unilaterally acting friction catch, lateral slides, in particular, become unnecessary on an injection holder of the reflector, which is a considerable advantage in the processing of thermosetting plastics.