SAFETY RESTRAINT PRETENSIONING APPARATUS

摘要

A pyrotechnic pretensioner arrangement of an emergency locking seat belt retractor has a gas pressure activated piston (2) and a spring biased gas generator (8) in generally parallel cylindrical bores (3, 7) provided in an assembly (4) which is inertially movable against a calibration spring (15) about a pivot (5) to release a catch formed by a lever arm (9); the force of the spring (15) being such that the mechanism releases and detonates the gas generator (8).