Gas bag for a side impact protection device

• US 7,152,876 B2
• Filed: 01/09/2004
• Issued: 12/26/2006
• Est. Priority Date: 01/31/2003
• Status: Active Grant

• Current Assignee: TRW Occupant Restraint Systems GmbH & Co. KG
• Original Assignee: TRW Occupant Restraint Systems GmbH & Co. KG
• Inventors: Hofmann, Sven
• Primary Examiner(s): Dickson, Paul N.
• Assistant Examiner(s): To, Toan C.
• Application Number:
  US10/754,755
• Publication Number:
  US 20040150199A1
• Time in Patent Office: 1,082 Days
• Field of Search: 280/730.2, 280/729, 280/743.1, 280/743.2
• US Class Current: 280/743.1
• CPC Class Codes: B60R 2021/23324 Inner walls crating separate compartments, e.g. communicating with vents
• CPC Class Codes: B60R 21/23138 specially adapted for side protection B60R21/23184, B60R21/232 take precedence
• 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

Abstract

A gas bag for a side impact protection device includes at least two inflatable chambers (28, 30) separated from each other in a gas-tight manner. The gas bag (10) is formed from two covering layers (12, 14) lying one over the other, which define an inflatable region and an inflation opening (16) of the gas bag (10), and from a fabric layer (18) arranged between the two covering layers (12, 14). The fabric layer (18) has an outer edge which in the inflatable region of the gas bag (10) is connected only with one of the two covering layers (12, 14) to divide the gas bag (10) into the two chambers (28, 30).

Claims

1. A gas bag for a side impact protection device, said gas bag comprising at least two inflatable chambers (28, 30) separated from each other in a gas-tight manner, said gas bag (10) being formed from two covering layers (12, 14) lying one over the other, which define an inflatable region and an inflation opening (16) of said gas bag (10), and from a fabric layer (18) arranged between said two covering layers (12, 14), said fabric layer (18) having an outer edge defining the entire periphery of said fabric layer (18) except for a region (24) forming an inflow opening (32), said outer edge being connected only with one of said two covering layers (12, 14) to divide said gas bag (10) into said two chambers (28, 30).

2. The gas bag according to claim 1, wherein said fabric layer (18) is connected with said covering layer (12;

14) by a seam (26).

3. A gas bag for a side impact protection device, said gas bag comprising at least two inflatable chambers (28, 30) separated from each other in a gas-tight manner, said gas bag (10) being formed from two covering layers (12, 14) lying one over the other, which define an inflatable region and an inflation opening (16) of said gas bag (10), and from a fabric layer (18) arranged between said two covering layers (12, 14), said fabric layer (18) having an outer edge which in said inflatable region of said gas bag (10) is connected only with one of said two covering layers (12, 14) to divide said gas bag (10) into said two chambers (28, 30), wherein said fabric layer (18) has two flaps (20, 22) in a region of said inflation opening (16), one of said flaps (20) being connected with one of said covering layers (14) for the formation of a first inflow opening (32) for one of said chambers (28), and the other flap (22) being connected with the other one of said covering layers (12) for the formation of a second inflow opening (34) for the other one of said chambers (30).

4. The gas bag according to claim 3, wherein said two flaps (20, 22) are separated from each other by a slit (24).

5. The gas bag according to claim 3, wherein said inflow openings (32, 34) are approximately equal in size.

6. A gas bag for a side impact protection device, said gas bag comprising at least two inflatable chambers (28, 30) separated from each other in a gas-tight manner, said gas bag (10) being formed from two covering layers (12, 14) lying one over the other, which define an inflatable region and an inflation opening (16) of said gas bag (10), and from a fabric layer (18) arranged between said two covering layers (12, 14), said fabric layer (18) having an outer edge which in said inflatable region of said gas bag (10) is connected only with one of said two covering layers (12, 14) to divide said gas bag (10) into said two chambers (28, 30), wherein at least a portion of the outer edge of said fabric layer (18) is located outside of said inflatable region of said gas bag.

7. The gas bag according to claim 6, wherein said portion of the outer edge of said fabric layer (18) is attached between said covering layers (12, 14).

8. A gas bag for a side impact protection device, said gas bag comprising at least two inflatable chambers (28, 30) separated from each other in a gas-tight manner, said gas bag (10) being formed from two covering layers (12, 14) lying one over the other, which define an inflatable region and an inflation opening (16) of said gas bag (10), and from a fabric layer (18) arranged between said two covering layers (12, 14), said fabric layer (18) having an outer edge which in said inflatable region of said gas bag (10) is connected only with one of said two covering layers (12, 14) to divide said gas bag (10) into said two chambers (28, 30), wherein at most three layers are positioned one over the other in the gas bag.