Inflatable side air bag curtain module with chamber separators

• US 6,450,529 B1
• Filed: 06/23/2000
• Issued: 09/17/2002
• Est. Priority Date: 06/23/2000
• Status: Expired due to Fees

• Current Assignee: Key Safety Systems, Inc. (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: Breed Automotive Technology, Inc. (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Kalandek, Bruce A., Wipasuramonton, Pongdet P., Tobian, Robert
• Primary Examiner(s): Johnson, Brian L.
• Assistant Examiner(s): Fleming, Faye M.
• Application Number:
  US09/602,266
• Time in Patent Office: 816 Days
• Field of Search: 280/730.2, 280/730.1, 280/743.2, 280/743.1, 280/728.1, 280/728.2
• US Class Current: 280/730.2
• CPC Class Codes: B60R 2021/23382 Internal tether means
• CPC Class Codes: B60R 2021/23386 External tether means
• CPC Class Codes: B60R 21/213 in vehicle roof frames or pillars
• CPC Class Codes: B60R 21/232 Curtain-type airbags deploying mainly in a vertical direction from their top edge
• CPC Class Codes: B60R 21/233 comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other B60R21/232 takes precedence
• CPC Class Codes: B60R 21/2338 Tethers
• CPC Class Codes: B60R 21/26 characterised by the inflation fluid source or means to control inflation fluid flow arrangement or mounting thereof to the vehicle B60R21/20; blasting cartridges for producing gas under pressure in general F42B3/04; initiators or igniters therefor F42B3/10

Abstract

A side impact or rollover protection restraint system (20) comprising: an air bag of sufficient length to extend from a first (30) pillar to at least a second pillar (34) of the vehicle, the air bag (22), upon inflation, is of sufficient height to extend from proximate a roof rail (38) of the vehicle to a location generally adjacent the shoulder of a 50th percentile sized seated occupant such that the inflated air bag will lie between the occupant and a side portion of the vehicle; the air bag including a first and a second panel of material that are joined together to create at least one inflatable volume (101a,b) and a plurality of internal tethers or separators for forming corresponding bridges between predetermined regions of each of the first and second panel such that upon inflation of the air bag these regions are spaced from one another by an internal tether.

Claims

1. A side impact or rollover protection restraint system (20) comprising:

an air bag of sufficient length to extend from a first pillar (30) to at least a second pillar (34) of the vehicle, the air bag (22), upon inflation, is of sufficient height to extend from proximate a roof rail (38) of a vehicle to a location generally adjacent the shoulder of a 50th percentile sized seated occupant such that the inflated air bag will lie between the occupant and a side portion of the vehicle;

the air bag including a first and a second panel of material that are joined together to create at least one inflatable volume (101a,c) and a plurality of internal tethers or separator means for forming corresponding bridges between predetermined regions of each of the first and second panel such that upon inflation of the air bag these regions are spaced from one another by at least one internal tether,

wherein the air bag includes more than one inflatable volume, wherein each volume includes corresponding internal tethers or separator means.

2. The system as defined in claim 1 wherein at least one internal tether or separator means includes an opening therein to allow inflation gas to flow thereacross.

3. The system as defined in claim 2 wherein the opening is generally oval in shape.

4. The system as defined in claim 1 wherein opposing ends of the bridge are secured to a corresponding first and second panel along a corresponding sewn seam or sew line.

5. The system as defined in claim 4 wherein the sew line of one end of the bridge in the first panel is generally in alignment with the sew line of the other end of the bridge in the second panel.

6. The system as defined in claim 4 wherein the sew line of one end of the bridge in the first panel is spaced from the sew line of the other end of the bridge in the second panel.

7. A side impact or rollover protection restraint system (20) comprising:

an air bag of sufficient length to extend from a first pillar (30) to at least a second pillar (34) of the vehicle, the air bag (22), upon inflation, is of sufficient height to extend from proximate a roof rail (38) of a vehicle to a location generally adjacent the shoulder of a 50th percentile sized seated occupant such that the inflated air bag will lie between the occupant and a side portion of the vehicle;

the air bag including a first and a second panel of material that are joined together to create a plurality of inflatable volumes (101a,c) and a plurality of internal tethers or separator means, for each volume, for forming corresponding bridges between predetermined regions of each of the first and second panel such that upon inflation of the air bag these regions are spaced from one another by at least one internal tether;

wherein each internal tether or separator means includes opposing sides, and wherein the opposing sides are one of;

straight and angled relative to one another, and arcuate.

8. A side impact or rollover protection restraint system (20) comprising:

an air bag of sufficient length to extend from a first pillar (30) to at least a second pillar (34) of the vehicle, the air bag (22), upon inflation, is of sufficient height to extend from proximate a roof rail (38) of a vehicle to a location generally adjacent the shoulder of a 50th percentile sized seated occupant such that the inflated air bag will lie between the occupant and a side portion of the vehicle;

the air bag including a first and a second panel of material that are joined together to create a plurality of inflatable volumes (101a,c) and a plurality of internal tethers or separator means, for each volumes for forming corresponding bridges between predetermined regions of each of the first and second panel such that upon inflation of the air bag these regions are spaced from one another by at least one internal tether;

wherein each inflatable portion of the air bag includes at least two rows of tethers.

9. A side impact or rollover protection restraint system (20) comprising:

an air bag of sufficient length to extend from a first pillar (30) to at least a second pillar (34) of the vehicle, the air bag (22), upon inflation, is of sufficient height to extend from proximate a roof rail (38) of a vehicle to a location generally adjacent the shoulder of a 50th percentile sized seated occupant such that the inflated air bag will lie between the occupant and a side portion of the vehicle;

the air bag including a first and a second panel of material that are joined together to create a plurality of inflatable volumes (101a,c) and a plurality of internal tether or separator means, for each volume, for forming corresponding bridges between predetermined regions of each of the first and second panel such that upon inflation of the air bag these regions are spaced from one another by at least one internal tether;

wherein each tether includes opposing long sides and opposing ends, wherein each tether is secured to a corresponding first and second panel along a respective side of the tether.

10. The system as defined in claim 9 wherein each end of a tether includes a stress reducing feature.

11. The system as defined in claim 9 wherein the tether includes an opening spaced from the sides and ends.

12. The system as defined in claim 9 wherein one end is wider than its opposing end.

13. The system as defined in claim 9 wherein the length of at least one tether differs from the length of an adjacent tether.

14. A side impact or rollover protection restraint system (20) comprising.

an air bag of sufficient length to extend from a first (30) pillar to at least a second pillar (34) of the vehicle, the air bag (22), upon inflation, is of sufficient height to extend from proximate a roof rail (38) of a vehicle to a location generally adjacent the shoulder of a 50th percentile sized seated occupant such that the inflated air bag will lie between the occupant and a side portion of the vehicle;

the air bag including a first and a second panel of material that are joined together to create a plurality of inflatable volumes (101a,c) and a plurality of internal tether or separator means, for each volume, for forming corresponding bridges between predetermined regions of each of the first and second panel such that upon inflation of the air bag these regions are spaced from one another by at least one internal tether;

the tether are in rows of two or more.

15. A side impact or rollover protection restraint system (20) comprising:

an air bag of sufficient length to extend from an A-pillar (30) to at least a D-pillar (34) of the vehicle, the air bag (22), upon inflation, is of sufficient height to extend from proximate a roof rail (38) of a vehicle to a location generally adjacent the shoulder of a seated occupant such that the inflated air bag will lie between the occupant and a side portion of the vehicle, the air bag including uninflated regions in the vicinity of a B-pillar and a C-pillar;

the air bag including a first and a second panel of material that are joined together to create inflatable regions and a plurality of rows of internal tethers for forming corresponding bridges between the first and second panel of each particular region such that upon inflation of the air bag these regions are spaced from one another by at least one internal tether, wherein the regions are proximate the A-pillar, between the B and the C-pillars and between the C and D-pillars.