Bended pre-tensioner tube
AssigneeAutoliv Development AB
InventorKlaus-Peter Singer
Life of this patent
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Abstract
A pre-tensioning device for a seat belt with a piston which is guided in a bent tube, and which in case of triggering is influenced by gas generated by a gas generator located in one section of the tube, to which a cable led into the tube by a cable opening is attached. The gas generator section (12) of tube (10) which accommodates gas generator (16) is offset from the piston path section (11) of tube (10) which accommodates piston (17) by creation of a narrowed cross-section inside the tube with a defined gas flow path (29, 41).
Claims12
A pre-tensioning device for a seat belt comprising a bent tube having a gas generator section and a piston path section with a bent section therebetween, a piston which is guided in the piston path section of the tube and which upon triggering is influenced to move by gas generated by a gas generator located in the gas generator section of the tube, a cable led into the tube through a cable opening is attached to the piston, the gas generator section of the tube is offset from the piston path section of the tube and the bent section forms a narrowed cross-section inside the tube forming a gas flow path for gas flowing from the gas generator section of the tube to the piston path section of the tube upon triggering of the gas generator.
Dependencies are inferred from the claim text.