Inflatable gas bag for a vehicular restraining system

• US 5,439,247 A
• Filed: 09/22/1993
• Issued: 08/08/1995
• Est. Priority Date: 09/29/1992
• Status: Expired due to Fees

• Current Assignee: TRW Repa GmbH
• Original Assignee: TRW Repa GmbH
• Inventors: Kolb, Andreas
• Primary Examiner(s): Culbreth, Eric D.
• Application Number:
  US08/125,425
• Time in Patent Office: 685 Days
• Field of Search: 280/730 A, 280/730 R, 280/743 R, 280/748, 280/749, 280/751, 280/753, 280/728 R, 280/729, 280/743 A, 280/731
• US Class Current: 280/730.2
• CPC Class Codes: B60R 21/08 automatically movable from an inoperative to an operative position, e.g. in a collision electrical circuits for triggering safety arrangements B60R21/01
• CPC Class Codes: B60R 21/23138 specially adapted for side protection B60R21/23184, B60R21/232 take precedence

Abstract

The gas bag (10) for a vehicular restraining system is formed by an annular hose (14). It is intended to protect against side impact and is characterized by fast inflation.

Claims

1. An inflatable gas bag for a passenger restraint system in vehicles, comprising, when inflated, a generally flat inner portion having a generally polygonal periphery with rounded corners, and an outer tubular portion connected to the periphery of and surrounding said inner portion forming a closed loop, said outer portion projecting on opposed sides of said inner portion and having an outer periphery of a generally polygonal shape with rounded corners, and said outer portion being designed to extend in the inflated condition along a portion of a vehicle side window to protect the passenger against lateral impact, wherein said inner and outer portions are defined by a pair of superimposed layers of fabric interconnected by stitches along lines and wherein said inner portion is formed by a plurality of straight tubular webs in communication with said outer portion.

2. An inflatable gas bag for a passenger restraint system in a vehicle comprising, when inflated, a generally flat portion having a first thickness and a tubular annulus circumscribing said flat portion with a second thickness larger than the first thickness, wherein said flat portion includes a pair of superimposed layers of fabric and wherein said flat portion includes a plurality of tubular webs in fluid communication with said tubular annulus.

3. An inflatable gas bag for a passenger restraint system in a vehicle comprising, when inflated, a generally flat portion having a first thickness and a tubular annulus circumscribing said flat portion with a second thickness larger than the first thickness, wherein said flat portion includes a pair of superimposed layers of fabric and wherein said flat portion is quilted and in fluid communication with said tubular annulus.