Abstract: An inflator (20) comprising: a pressure vessel (22) made of a thin walled steel tubing (24), sealed at one end by an end plate or cap (30). The other end of the pressure vessel sealed by a propellant housing (50). A plurality of axial bores (56a-d) exiting through an adjacent part (58) of the housing (50) and a face of the adjacent part of the housing includes a second counter bore (70) and a plurality of radial bores (72a-d) radially extend therefrom. A rupture disk assembly (100) having a central portion (102) forms a rupture disk extending into the second counter bore (70) and a radially extending outer portion (104) fitted generally flat against the face (60) .

Abstract: A post activation device to indicate that pressure the existed within a pressure vessel just prior to the opening of the pressure vessel and the resulting loss of pressurization, having a diaphragm, plug or piston (62, 130, 160, 330) capable of rupturing, moving or deforming in response to a pressure differential thereacross above one or more low limit values and for providing an indication of the pressure within the pressure vessel just prior to its being opened, and a support member (70), within the pressure vessel for supporting the diaphragm, plug or piston means.