Backrest device for a vehicle seat

US6550859B1 · kind B1 · utility

Assignee

• VOLVO CAR CORPORATION · SE

Inventors

• Torsten Andersson · Bara, SE
• Bjorn Lundell · Gothenburg, SE

Key dates

• Filing date: Sep 13, 2000
• Grant date: Apr 22, 2003
• Expiry date: Sep 13, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F3/02
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Backrests for vehicle seats are disclosed including a support attached to a frame including a plurality of resilient springs and a corresponding plurality of stroke limiters for permitting the resilient springs to move through a predetermined stroke and absorb a load within a first load range and limiting further stroke of the resilient springs within a second load range, one of the resilient springs and the stroke limiters including a fastener for attachment to the frame and one of the resilient springs and stroke limiters including a second fastener for attachment to the support.