Vehicle deceleration sensing device

US4108005A · kind A · utility

Assignee

• Forenade Fabriksverken

Inventors

• Claes Tisell
• Lars Svensson · Partille, SE
• Gustav S. E. Karlstedt · Sollentuna, SE
• Gustav Y. Thorstensson · Sollentuna, SE
• John Fredrik Alf Hartmann · Djursholm, SE

Key dates

• Filing date: Apr 21, 1977
• Grant date: Aug 22, 1978
• Expiry date: Apr 21, 1997

Classification

• Technology area (CPC G): Physics
• CPC primary: G01P15/036
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A vehicle deceleration sensing device making it possible to sense whether an occurring collision is powerful or just trivial. The device comprises a first mass body with an actuating member, a second mass body and a blocking member in the form of a cup spring preventing the second mass body from being displaced at an occurring deceleration of the vehicle until the first mass body has been displaced a predetermined distance indicating that the duration and the magnitude of said deceleration are in excess of predetermined values.