Patent ID: 6435440
Filing Date: 2002-08-20
Classification: B60R

Abstract:
A pretensioner for use with a winding shaft and webbing belt having an end, with the end anchored to the winding shaft, the pretensioner being for applying rotational force during a predetermined condition to the winding shaft, in a take-up direction for winding the webbing belt, the pretensioner comprising:(a) a cylinder main body having an interior with a piston moveably disposed therein, wherein gas pressure in the cylinder main body causes the piston to move in a direction for supplying rotational force to the winding shaft in a take-up direction for winding the webbing belt; (b) a generator accommodating portion disposed generally as a cylinder integrally extending from the cylinder main body, the cylinder main body having a bottom, with an opening located between the piston and the bottom of the cylinder main body, the opening being connected in fluid communication with the cylinder of the generator accommodating portions wherein the generator accommodating portion and cylinder main body each have a center axis, which are skewed relative to one another; and (c) a gas generator mountable to the generator accommodating portion for generating the gas under a predetermined condition, and supplying gas pressure for causing piston movement, wherein the generator accommodating portion includes an end, and when the gas generator is mounted to the generator accommodating portion, the gas generator includes a protruding portion having an external periphery with a stopper formed thereon, with the stopper abutting the end of the generator accommodating portion.