Safety arrangement for passengers of a vehicle

US4021057A · kind A · utility

Assignee

• Messerschmitt Bolkow Blohm GmbH · DE

Inventors

• Manfred Held · Hamburg, DE
• Johann Spies · Brackenheim, DE

Key dates

• Filing date: Oct 14, 1975
• Grant date: May 3, 1977
• Expiry date: Oct 14, 1995

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R21/01526
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A safety arrangement for passengers of a moving vehicle includes an inflatable air cushion for maintaining passengers in their seat positions and a plurality of gas generators for inflating the cushion. The cushion is inflatable at different rates depending on vehicle deceleration by the employment of an electrical release circuit. The circuit includes a piezoelectric sensor for providing a signal representative of deceleration, a first threshold value switch, an integrator, a plurality of threshold value switches having different thresholds and a plurality of firing elements for the gas generators.