Air bag inflator and method of assembly

摘要

An inflator (14) for inflating an inflatable vehicle occupant restraint (12) includes a body (60) of ignitable gas generating material, an igniter (260) for igniting the body (60) of gas generating material, and a housing (50) having a tubular wall (52) surrounding the body (60) of gas generating material. The tubular wall (52) has a longitudinal central axis (40), a plurality of outlet openings (100) through which gas flows radially outward, and an open end portion (232) with the contour of a dome centered on the axis (40). The inflator (14) further includes a circular end cap (56) which is located coaxially within the tubular wall (52). The end cap (56) supports the igniter (260) on the axis (40), and has a peripheral surface portion (216) with the contour of a dome centered on the axis (40). The open end portion (232) of the tubular wall (52) closely overlies the peripheral surface portion (216) of the end cap (56). <IMAGE>