Headrest for automotive vehicle seats

US7111901B2 · kind B2 · utility

Assignee

• GRAMMAR AG · DE

Inventors

• Manfred Schlierf · Amberg, DE
• Josef Meier · Engelburg, CH
• Thomas Wallinger · Bodenwöhr, DE

Key dates

• Filing date: Nov 23, 2004
• Grant date: Sep 26, 2006
• Expiry date: Nov 23, 2024

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R21/055
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A headrest for a motor vehicle seat is crash active in that it has a mechanism for automatically bringing the head-engaging member toward the head of the passenger in the case of a crash. This mechanism includes a slide guided on a pair of cylindrical members surrounded by springs and having a tooth-forming part of a return travel lock preventing return of the slide to its starting position. In that position a releasable coupling device has a primary coupling element engaged with a secondary coupling element which may be a hairpin-shaped bent wire.