Patent ID: 6460877
Filing Date: 2002-10-08
Classification: B60R

Abstract:
An airbag comprising:an expansion part permitting an expansion gas to inflow to expand a peripheral wall; and linear joining portions arranged in a region of the expansion part and constituted by joining facing portions of the peripheral wall in a linear manner; each of the linear joining portions comprising a base, curved portions and swelling portions; each base being arranged to be substantially straight; each of the curved portions being connected to the respective base and curvilinearly extending from the respective base thereof; the swelling portions being arranged at tip ends of the respective curved portions to smoothly connect outer peripheral edges thereof to outer peripheral edges of the curved portions; and the linear joining portions being arranged in accordance with B021 where B0 is a widthwise dimension near portions of each base connected to the respective curved portions, R1 is a radius of curvature of the outer peripheral edges of the curved portions, and R2 is a radius of curvature of the outer peripheral edges of the swelling portions.