Land vehicles – Wheeled – Attachment
Reexamination Certificate
1999-10-12
2001-10-16
English, Peter C. (Department: 3619)
Land vehicles
Wheeled
Attachment
C280S740000, C280S743200
Reexamination Certificate
active
06302433
ABSTRACT:
FIELD OF THE INVENTION
The invention relates to a gas bag for a vehicle occupant restraint system.
BACKGROUND OF THE INVENTION
Such gas bag comprises an inflation opening, a fabric piece which is arranged inside the gas bag opposite the inflation opening and forms an outflow opening for compressed gas which flows through the inflation opening into the gas bag, and at least one tether which is likewise arranged inside the gas bag.
The fabric piece serves to deflect in a desired direction the hot compressed gas entering into the interior of the gas bag after a gas generator has been activated. This prevents the hot compressed gas from striking directly onto the wall of the gas bag and damaging it. In addition, through the selective deflection of the compressed gas, the unfolding behavior of the gas bag can be influenced to a large extent. According to the direction of inflow of the compressed gas into the gas bag, for example it can be achieved that the gas bag firstly unfolds in lateral direction, in particular upwards and downwards towards the windscreen and towards the floor of the vehicle, and to the vehicle occupant only towards the end of the unfolding process.
The tether serves to influence the shape and the dimensions of the gas bag in particular in the unfolded state. In addition, by means of the tether also the unfolding behavior of the gas bag can be influenced. However, it is a problem that the tether can have a negative effect on the unfolding behavior which is attempted to be maintained by means of the fabric piece.
BRIEF DESCRIPTION OF THE INVENTION
The invention provides a gas bag in which the tether does not have any negative effect on the unfolding behavior of the gas bag, which is given by means of the fabric piece. According to the invention, a gas bag for a vehicle occupant restraint system comprises an inflation opening, a fabric piece arranged inside the gas bag opposite the inflation opening and forming an outflow opening for compressed gas which flows through the inflation opening into the gas bag, and at least one tether which is likewise arranged inside the gas bag. The tether is arranged such that the compressed gas flowing out through the outflow opening from a volume surrounded by the fabric piece, substantially does not flow against the tether. This ensures that the tether does not lie in front of the outflow opening and thereby does not alter in a disadvantageous manner the outflow speed and the outflow direction of the compressed gas from the volume delimited by the fabric piece, for example by the opening being covered.
REFERENCES:
patent: 5573270 (1996-11-01), Sogi et al.
patent: 5848805 (1998-12-01), Sogi et al.
patent: 5957485 (1999-09-01), Hirai
patent: 6022046 (2000-02-01), Isomura et al.
patent: 6086092 (2000-07-01), Hill
patent: 1-311930 (1989-12-01), None
patent: 4-56652 (1992-02-01), None
Ellerbrok Norbert
Lang Norbert
English Peter C.
Tarolli, Sundheim, Covell Tummino & Szabo L.L.P.
TRW Occupant Restraint Systems GmbH & Co. KG
LandOfFree
Gas bag for a vehicle occupant restraint system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gas bag for a vehicle occupant restraint system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas bag for a vehicle occupant restraint system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2614411