Gas generator with porous outer wall

US5374407A · kind A · utility

Assignee

• DAICEL CHEMICAL INDUSTRIES, LTD. · JP

Inventors

• Hans J. Decker · Wiesbaden, DE
• Hans Freund · Schweinfurt, DE
• Karl-Heinz Grunthaler · Usingen, DE
• Helmut Heide · Kelkheim, DE
• Klaus Hollenberg · Bad Homburg vor der Höhe, DE
• Hubert Preis · Darmstadt, DE
• Karl J. Rowold · Friedrichsdorf, DE
• Ralf G. Tschulena · Usingen, DE

Key dates

• Filing date: Apr 19, 1993
• Grant date: Dec 20, 1994
• Expiry date: Apr 19, 2013

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R21/2644
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The present invention provides a gas generator for air bags that includes a first shell having a circular part and an outer wall. The outer wall formed is of a porous material which allows gas to pass freely therethrough. A second shell is attached to the first shell to form a housing into which is installed a gas generating device. The gas generating device includes a canister filled with a gas generant. A plurality of first and second blade members fasten the first and second shells together. The blade members are at least equal in height to the total height of the housing, the first blade members being shaped to fit the outer circumferential surface of the canister and placed in contact with the outer circumferential surface of the canister and arranged along the circumference of the canister at periodic intervals to form a ring. The second blade members have a width at least equal to the circumferential interval between the first blade members and are spaced radially from the first blade members and shifted in the circumferential direction from the first blade members to positions facing the intervals between the first blade members. The first and second blade members have proj…