Patent ID: 6764097
Filing Date: 2004-07-20
Classification: B60R,Y10T

Abstract:
An inflator comprising:a first cylindrical member having a pressure vessel portion and a conduit portion for directing inflation gas, the pressure vessel portion has an annular end plate extending radially inward defining a discharge opening; a second cylindrical member having a first end that is closed and a second end that is fused to the pressure vessel portion of the first cylindrical member by friction welding whereby curls are formed therefrom; a burst disk having a substantially dome shape with a peak of the dome facing away from the second cylindrical member, the burst disk is attached to the end plate, wherein the burst disk, the first cylindrical member and the second cylindrical member define a pressure vessel; and an orifice plate having an orifice therethrough wherein the orifice is smaller than the discharge opening, the first cylindrical member has an annular ledge disposed within the pressure vessel portion thereof for precluding the orifice plate from contacting the end plate, and the curls preclude the orifice plate from sliding into the second cylindrical member.