US4845377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit arrangement for the actuation of a safety system
Assignee: Siemens AG
•
Filing: 1988-03-16
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Granted: 1989-07-04
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Expires: 2008-03-16
Abstract
Abstract By way of an energy source, switches controlled by delay sensors activate a logic component. Dependent on the switch positions of the switches, of a seat switch and of a seat belt switch, the logic component controls an electronic ignition switch that connects a trigger for actuating a motor vehicle air bag system.
Inventors
- 👤 Marten Swart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:58
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/01; B60R21/017; B60R21/0173
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
116 words
In a circuit arrangement for actuating a safety system, particularly an air bag system, which system is of the type comprising an energy source connected to at least one load system, in which the load system comprises a trigger for the safety system, in which the trigger is in a housing which is connected to a lead-in capacitor and a lead-out capacitor, and in which at least two series-connected switches are provided and each driven by a mechanical delay sensor, the improvement comprising: a logic component which is connected to the energy source by way of the series-connected switches; and an electronic ignition switch in the load circuit connected to and driven by said logic component.
Claim 2
Dependent Claim
116 words
In a circuit arrangement for actuating a safety system, particularly an air bag system, which system is of the type comprising an energy source connected to at least one load system, in which the load system comprises a trigger for the safety system, in which the trigger is in a housing which is connected to a lead-in capacitor and a lead-out capacitor, and in which at least two series-connected switches are provided and each driven by a mechanical delay sensor, the improvement comprising: a logic component which is connected to the energy source by way of the series-connected switches; and an electronic ignition switch in the load circuit connected to and driven by said logic component.
Claim 3
Dependent Claim
43 words
The improved circuit arrangement of claim 1, and further comprising: at least one status switch connected to said logic component for causing the logic component to drive the electronic ignition switch dependent on the switch positions of said at least one status switch.
Claim 4
Dependent Claim
27 words
The improved circuit arrangement according to claim 1, and further comprising: at least one additional ignition switch connected in series with said ignition switch and the trigger.
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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) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |