A seatbelt pretensioner system for use in a seatbelt retractor assembly having a spindle and a frame includes a housing adapted for being mounted to the frame and having an interior cavity, a pretensioner tube including a body portion and an exit portion, and having a first tube end in fluid communication with a gas generator and a second tube end in fluid communication with the interior cavity of the housing, a pinion being rotatably mounted in the housing and fixedly coupled to the spindle adapted for taking up seatbelt webbing during pretensioning, a pretensioner rod disposed inside the pretensioner tube, and a stopper disposed between the gas generator and the pretensioner rod. Further, the exit portion of the tube is formed to neck down such that the exit portion is configured to prevent the stopper from passing therethrough.

A seatbelt pretensioner system for use in a seatbelt retractor assembly having a spindle and a frame includes a housing adapted for being mounted to the frame and having an interior cavity, a pretensioner tube having a first tube end in fluid communication with a gas generator and a second tube end in fluid communication with the interior cavity of the housing, a pinion being rotatably mounted in the housing and fixedly coupled to the spindle adapted for taking up seatbelt webbing during pretensioning, and a pretensioner rod disposed inside the pretensioner tube. Further, the pretensioner rod has a proximal end disposed towards the gas generator and a distal end disposed away from the gas generator. In addition, the housing is formed with at least two levels including an inboard portion and an outboard portion to store the pretensioner rod after pretensioning.

A seatbelt pretensioner system for use in a seatbelt retractor assembly having a spindle and a frame includes a housing adapted for being mounted to the frame and having an interior cavity, a pretensioner tube having a first tube end in fluid communication with a gas generator and a second tube end in fluid communication with the interior cavity of the housing, a pinion being rotatably mounted in the housing and fixedly coupled to the spindle adapted for taking up seatbelt webbing during pretensioning, and a pretensioner rod disposed inside the pretensioner tube. Further, the pretensioner rod has a proximal end disposed towards the gas generator and a distal end disposed away from the gas generator. In addition, the housing is formed with at least two levels including an inboard portion and an outboard portion to store the pretensioner rod after pretensioning.

A metal-fixing material feedthrough for at least one of an airbag igniter or a belt pre-tensioner includes a main body having a through opening formed therein and at least one metal pin fused into the through opening in a vitreous or glass ceramic fixing material. A surface of the vitreous or glass ceramic fixing material is a freely fused surface and lies in a same plane as an end face of the at least one metal pin.

A metal-fixing material feedthrough for at least one of an airbag igniter or a belt pre-tensioner includes a main body having a through opening formed therein and at least one metal pin fused into the through opening in a vitreous or glass ceramic fixing material. A surface of the vitreous or glass ceramic fixing material is a freely fused surface and lies in a same plane as an end face of the at least one metal pin.