Annular air bag and driver side air bag module

• US 6,561,538 B2
• Filed: 05/31/2001
• Issued: 05/13/2003
• Est. Priority Date: 03/16/2001
• 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: Langbeen, Lawrence R., Ford, Brian C.
• Primary Examiner(s): Johnson, Brian L.
• Assistant Examiner(s): Campbell, Kelly E.
• Application Number:
  US09/871,037
• Publication Number:
  US 20020130493A1
• Time in Patent Office: 712 Days
• Field of Search: 280/728.2, 280/728.3, 280/731, 280/730.1, 280/743.1, 280/743.2
• US Class Current: 280/728.2
• CPC Class Codes: B60R 11/0235 of flat type, e.g. LCD
• CPC Class Codes: B60R 11/0258 for navigation systems
• CPC Class Codes: B60R 11/0264 for control means
• CPC Class Codes: B60R 2011/001 Vehicle control means, e.g. steering-wheel or column
• CPC Class Codes: B60R 21/2035 using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit steering wheel covers with tear lines B60R21/21656; assembling of modules B60R21/217
• CPC Class Codes: B60R 21/21656 Steering wheel covers or similar cup-shaped covers
• CPC Class Codes: B60R 21/217 Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
• CPC Class Codes: B60R 21/231 characterised by their shape, construction or spatial configuration

Abstract

An air bag module comprising an air bag, the air bag including: a face panel having a first central opening therein; a rear panel having a second central opening therein, that portion of the rear panel about the second central opening forming a neck portion; a tubular insert having an open end secured to the face panel about the first central opening, the tubular insert including a closed end opposite the open end, the tubular insert extending into the air bag.

Claims

1. An air bag module, comprising an air bag, the air bag including:

a face panel having a narrowly shaped first opening therein;

a rear panel of substantially the same size as the first panel and having a central opening;

a tubular member having an open end and an opposite closed end, the open end secured to the face panel along the first opening and wherein the interior of the tubular member is accessible through the first opening.

2. The air bag module as defined in claim 1 wherein the first opening is a narrow slit.

3. The air bag module as defined in claim 1 wherein the first opening is oval in shape.

4. The air bag module as defined in claim 1 wherein the first opening is one of oblong and rectangular in shape.

5. An air bag module, comprising an air bag, the air bag including:

a face panel having a first opening therein;

a rear panel of substantially the same size as the first panel and having a central opening;

a tubular member having an open-end and an opposite closed end, the open end secured to the face panel along the first opening and wherein the interior of the tubular member is accessible through a slit;

wherein the first opening is of sufficient size to permit receipt of a center module through the first opening.

6. The air bag module as defined in claim 5 wherein the slit through which the interior of the tubular member is accessible is the first opening in the face panel.

7. An air bag module, comprising an air bag, the air bag including:

a face panel having a first opening therein;

a rear panel having a central opening;

a tubular member having an open end, the open end secured to the face panel along the first opening and wherein the interior of the tubular member is accessible through a slit; and

wherein the tubular member includes a bottom and wherein the bottom of the tubular member is locatable between the bottom of a center module and a portion of an inflator.

8. The air bag module as defined in claim 7 wherein the bottom of the tubular member is sandwiched between the center module and the top of the inflator.

9. The air bag module as defined in claim 8 wherein the air bag in a folded state is located about sides of the center module and covered by a cover.

10. The air bag module as defined in claim 7 wherein the inflator does not protrude out from the air bag.

11. An air bag module comprising:

an air bag that is initially folded and when inflated expands to an annular configuration, the air bag having a center tubular member, wherein internal pressure of the air bag acts to collapse the tubular member, providing an inflatable barrier effectively closing a previously open end of the tubular member;

wherein the center tubular member includes opposing sets of wall portions wherein the length of the wall portion for a first set has a first dimension and wherein the length of the wall portion for a second set has a second, different dimension and a cover to protectively cover the air bag.

12. The air bag module as defined in claim 11 including a control module adapted to be received within the tubular member and positioned there so that the inflated air bag is positioned annularly about the control module.

13. The air bag module as defined in claim 11 wherein the cover includes a plurality of tear seams on a top of the cover.

14. The air bag module as defined in claim 13 wherein the first opening is a slit.

15. The air bag module as defined in claim 11 wherein the cover includes an additional circumferential tear seam located generally about the periphery of the control module.

16. The air bag module as defined in claim 11 wherein the center tubular member is configured as a flexible core panel with a scalloped top which traverses opposing sets of dissimilarly dimensioned wall portions.

17. An air bag module, comprising an air bag, the air bag including:

a face panel having a centrally located slit therein;

a rear panel of substantially the same size as the first panel and having a central opening;

a tubular member having an open end and an opposite dosed end, the open end secured to the face panel along the slit and wherein the interior of the tubular member is accessible through the slit.

18. The air bag module as defined in claim 17 wherein the face panel is circular.

19. The air bag module as defined in claim 17 wherein the tubular portion includes a flexible core panel with a scalloped top.

20. The air bag module as defined in claim 19 wherein the scalloped top is one of concave and convex.

21. The air bag module as defined in claim 17 wherein the tubular portion is of a one-piece woven construction.

22. An air bag module, comprising an air bag, the air bag including:

a face panel having a first opening therein, wherein first diameter of the first opening is smaller than that of a second diameter;

a rear panel of substantially the same size as the first panel and having a central opening;

a tubular member having an open end and an opposite closed end, the open end secured to the face panel along the first opening and wherein the interior of the tubular member is accessible through the first opening.