US5709405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable mass flow airbag module
Assignee: Robert Bosch GmbH
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Filing: 1996-04-10
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Granted: 1998-01-20
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Expires: 2016-04-10
Abstract
Abstract A variable mass flow airbag module includes a housing having gas discharge ports in direct communication with an airbag to be inflated for rapidly inflating the airbag and adapted to receive gas from a pyrotechnic inflator, stored gas or hybrid inflator, or other type of inflator. The housing has a vent opening which is controlled by a valve to vent a controlled variable amount of gas to achieve a desired mass flow of gas into the airbag to provide a desired level of energy absorption capability for optimizing occupant protection.
Inventors
- 👤 Davin G. Saderholm
- 👤 Kevin E. Hauppa
- 👤 Daniel R. Leininger
- 👤 Ian C. Faye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:18
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/20; B60R21/217; B60R21/2171; B60R21/26; B60R21/276; B60R2021/2765
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
A variable mass flow, airbag module system for use in a vehicle comprising: an airbag module, said airbag module including a housing in communication with an inflatable airbag; gas supply means for said housing for rapidly providing inflation gas for inflating said airbag; vent means in a wall of said housing; and valve means movable between a first position closing off said vent means and a second position for opening said vent means for venting a portion of said gas supplied in said housing; valve actuator means for operatively controlling said valve means; and electronic control means for controlling both said gas supply means and said valve actuator means, said electronic control means being responsive to multiple sensed inputs for selectively activating said valve actuator means and thus selectively varying the mass flow of said inflation gas directed to inflate said airbag.
Claim 2
Dependent Claim
142 words
A variable mass flow, airbag module system for use in a vehicle comprising: an airbag module, said airbag module including a housing in communication with an inflatable airbag; gas supply means for said housing for rapidly providing inflation gas for inflating said airbag; vent means in a wall of said housing; and valve means movable between a first position closing off said vent means and a second position for opening said vent means for venting a portion of said gas supplied in said housing; valve actuator means for operatively controlling said valve means; and electronic control means for controlling both said gas supply means and said valve actuator means, said electronic control means being responsive to multiple sensed inputs for selectively activating said valve actuator means and thus selectively varying the mass flow of said inflation gas directed to inflate said airbag.
Claim 3
Dependent Claim
21 words
A variable mass flow, airbag module system as recited in claim 1, wherein; said valve actuator means includes an electric motor.
Claim 4
Dependent Claim
31 words
A variable mass flow, airbag module system as recited in claim 2, wherein; said valve actuator means includes a gear driven by said motor in driving engagement with said valve means.
Claim 5
Dependent Claim
38 words
A variable mass flow, airbag module system as recited in claim 1, wherein; said electronic control means is coupled to multiple sensors that provide said multiple sensed inputs, and said multiple sensors monitoring predetermined conditions of the vehicle.
Claim 6
Dependent Claim
22 words
A variable mass flow, airbag module system as recited in claim 4, wherein: said multiple sensors monitor predetermined conditions of the occupant.
Claim 7
Dependent Claim
41 words
A variable mass flow, airbag module system as recited in claim 1, wherein: said valve means includes a gate slidably mounted on said housing wall from said first position covering said vent opening toward said second position uncovering said vent opening.
References Cited (Backward Citations)
US3672699A
Cited
US3767228A
Cited
US3966224A
Cited
US3767002A
Cited
US4243248A
Cited
US4620721A
Cited
US5074583A
Cited
US4984651A
Cited
US5071160A
Cited
US5232243A
Cited
US5330226A
Cited
US5366242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-01-19 | 2001-07-21 | 2002-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-01-19 | 2005-07-21 | 2006-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-01-19 | 2009-07-21 | 2010-01-20 | $7700.00 | Window Closed / Lapsed |