Patent ID: 7600781
Filing Date: 2009-10-13
Classification: B60R

Abstract:
1. An inflator, comprising: a pressurized gas chamber whose outer shell is formed by a cylindrical pressurized gas chamber housing, filled with a pressurized gas; a gas generator being connected to one end of the pressurized gas chamber, including an ignition device and a molded article of a gas generating composition, having a circular cross section, in a gas generator housing; a diffuser portion being connected to the other end of the pressurized gas chamber, provided with a gas discharge port; a first communication path provided between the pressurized gas chamber and the gas generator and closed by a first rupturable plate; and a second communication path provided between the pressurized gas chamber and the diffuser portion and closed by a second rupturable plate; and a cap covering the first rupturable plate from a side of the pressurized gas chamber, the cap having a peripheral surface provided with a plurality of gas holes through which gas passes, and a bottom surface that opposes the first rupturable plate; and, the cap being disposed to cover the first rupturable plate from the pressurized gas chamber side, the minimum diameter (d min) of each of the plurality of gas holes being equal to or smaller than the larger one of the minimum diameter (D min) and the length (L) of the molded article of the gas generating composition, such that half-burned and unburned gas generating compositions are completely burned inside the cap, stabilizing an output of the inflator.