US5941559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airbag for motor vehicles
Assignee: Mercedes Benz Group AG
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Filing: 1997-03-24
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Granted: 1999-08-24
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Expires: 2017-03-24
Abstract
Abstract An airbag for motor vehicles comprises an airbag sheath and an inner airbag that is inflated before the airbag sheath and, by virtue of its design, is prepared for deliberate filling with gas in the direction of the passenger, with the inner airbag having a cross section that decreases uniformly in the direction of the passenger, to aim the gas stream toward the passenger.
Inventors
- 👤 Harald Rudolf
- 👤 Ulrich Tschaschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:32
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/23; B60R21/231; B60R21/233; B60R2021/23324
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
114 words
An airbag for motor vehicles, comprising: an airbag sheath; and an inner airbag located centrally in said airbag sheath that is inflated before the airbag sheath and is designed by virtue of its shape for filling with gas in a specific direction, wherein the inner airbag has an elongated shape and a closed cross section that decreasingly tapers uniformly in a direction of a passenger, said cross section directing the gas flow in the direction of the passenger, and wherein the, inner airbag extends from an inlet cross section of the airbag sheath near a gas source to an opposite impact surface of the airbag sheath near a point of contact with the passenger.
Claim 2
Dependent Claim
114 words
An airbag for motor vehicles, comprising: an airbag sheath; and an inner airbag located centrally in said airbag sheath that is inflated before the airbag sheath and is designed by virtue of its shape for filling with gas in a specific direction, wherein the inner airbag has an elongated shape and a closed cross section that decreasingly tapers uniformly in a direction of a passenger, said cross section directing the gas flow in the direction of the passenger, and wherein the, inner airbag extends from an inlet cross section of the airbag sheath near a gas source to an opposite impact surface of the airbag sheath near a point of contact with the passenger.
Claim 3
Dependent Claim
37 words
Airbag according to claim 1, wherein an inlet cross section of the inner airbag for the gas flow relative to the filling volume of the inner airbag is larger than the corresponding ratio for the airbag sheath.
Claim 4
Dependent Claim
29 words
Airbag according to claim 1, wherein the inlet cross section where the gas flow enters the airbag sheath is smaller than an inlet cross section of the inner airbag.
Claim 5
Dependent Claim
24 words
Airbag according to claim 1, wherein the inner airbag is sewn to the impact surface of the airbag sheath near the point of contact.
Claim 6
Dependent Claim
19 words
Airbag according to claim 4, wherein the inner airbag is sewn to the airbag sheath along a circumferential seam.
Claim 7
Dependent Claim
18 words
Airbag according to claim 4, wherein the inner airbag is provided as a restraint for the airbag sheath.
Claim 8
Dependent Claim
17 words
Airbag according to claim 1, wherein the inner airbag is designed as a frustum of a cone.
Claim 9
Dependent Claim
17 words
Airbag according to claim 1, wherein the inner airbag is designed as a frustum of a pyramid.
Claim 10
Dependent Claim
18 words
Airbag according to claim 1, wherein the inner airbag has a rectangular shape at an inlet cross section.
Claim 11
Dependent Claim
20 words
Airbag according to claim 1, wherein the inner airbag is located coaxially in a lengthwise direction of the airbag sheath.
Claim 12
Dependent Claim
24 words
Airbag according to claim 1, wherein gas through-flow openings to allow gas to flow into the airbag sheath are provided in the inner airbag.
Claim 13
Dependent Claim
29 words
Airbag according to claim 1, wherein the inner airbag has at least one tear seam that tears under internal pressure and allows gas to flow into the airbag sheath.
Claim 14
Dependent Claim
25 words
Airbag according to claim 1, wherein the material of the inner airbag is designed to be gas-permeable above an internal pressure that can be predetermined.
Claim 15
Dependent Claim
15 words
Airbag according to claim 1, wherein the inner airbag is made of gas-permeable filter fabric.
Claim 16
Dependent Claim
15 words
Airbag according to claim 1, wherein the airbag is designed as a non-driver passenger airbag.
Claim 17
Dependent Claim
16 words
The airbag according to claim 1, wherein the inner airbag consists of exactly one inner airbag.
Claim 18
Dependent Claim
111 words
An airbag assembly disposable in use facing a vehicle passenger, comprising: an inner airbag, an airbag sheath surrounding the inner airbag, and a gas generator providing inflating gas to the inner airbag and the airbag sheath, wherein the inner airbag is located centrally in said airbag sheath and has a smaller volume than an airbag sheath volume separate from the inner airbag and has a uniformly decreasing tapering closed cross-section in a direction toward the passengers, wherein the inner airbag extends from an inlet cross section of the airbag sheath near the (at generator to an opposite impact surface of the airbag sheath near a point of contact with the passenger.
Claim 19
Dependent Claim
111 words
An airbag assembly disposable in use facing a vehicle passenger, comprising: an inner airbag, an airbag sheath surrounding the inner airbag, and a gas generator providing inflating gas to the inner airbag and the airbag sheath, wherein the inner airbag is located centrally in said airbag sheath and has a smaller volume than an airbag sheath volume separate from the inner airbag and has a uniformly decreasing tapering closed cross-section in a direction toward the passengers, wherein the inner airbag extends from an inlet cross section of the airbag sheath near the (at generator to an opposite impact surface of the airbag sheath near a point of contact with the passenger.
Claim 20
Dependent Claim
32 words
An airbag assembly according to claim 17, wherein the inner airbag is sewn to said airbag sheath at a location corresponding to a contact area of the airbag sheath with a passenger.
Claim 21
Dependent Claim
17 words
The airbag assembly according to claim 17, wherein the inner airbag consists of exactly one inner airbag.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-23 | 2003-02-22 | 2003-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-23 | 2007-02-22 | 2007-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-23 | 2011-02-22 | 2011-08-24 | $7700.00 | Window Closed / Lapsed |