US5734318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic device
Assignee: Robert Bosch GmbH
•
Filing: 1996-07-29
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Granted: 1998-03-31
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Expires: 2016-07-29
Abstract
Abstract An electronic device includes an acceleration-sensitive sensor, an electronic circuit arrangement for analyzing the output signal from the sensor, an ignition output element, an ignition element, and a safety device for the vehicle's occupants. To test the operating readiness of the ignition element, an oscillator circuit is also provided, which applies an output signal to the ignition element. The resulting voltage drop obtained across the ignition element is compared by means of a window comparator to threshold values.
Inventors
- 👤 Werner Nitschke
- 👤 Hermann Maier
- 👤 Werner Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:39
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/01; B60R21/017; B60R21/0173; G; G01; G01R; G01R31/00; G01R31/28; G01R31/282; G01R31/2829
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
97 words
An electronic device comprising: at least one acceleration-sensitive sensor; an electronic circuit arrangement for analyzing an output signal of the sensor; an ignition output element coupled to the electronic circuit arrangement; an ignition element including an ignition primer and a capacitor, the ignition primer and the capacitor being connected in series; at least one safety device for at least one vehicle occupant, the safety device being triggered by the ignition element; and an oscillator circuit, an output terminal of the oscillator circuit being coupled to the ignition element for supplying a test current to the ignition element.
Claim 2
Dependent Claim
97 words
An electronic device comprising: at least one acceleration-sensitive sensor; an electronic circuit arrangement for analyzing an output signal of the sensor; an ignition output element coupled to the electronic circuit arrangement; an ignition element including an ignition primer and a capacitor, the ignition primer and the capacitor being connected in series; at least one safety device for at least one vehicle occupant, the safety device being triggered by the ignition element; and an oscillator circuit, an output terminal of the oscillator circuit being coupled to the ignition element for supplying a test current to the ignition element.
Claim 3
Dependent Claim
16 words
The electronic device according to claim 1, wherein the oscillator circuit emits a sinusoidal output signal.
Claim 4
Dependent Claim
16 words
The electronic device according to claim 1, wherein the oscillator circuit emits a square output signal.
Claim 5
Dependent Claim
65 words
The electronic device according to claim 1, further comprising: a rectifying and smoothing component coupled to the output terminal of the oscillator circuit, the component rectifying and smoothing an output signal of the oscillator circuit; and a window comparator for receiving an output signal of the rectifying and smoothing component and for comparing the output signal of the component with first and second threshold values.
Claim 6
Dependent Claim
42 words
The electronic device according to claim 4, further comprising: a signal device; and an output element coupled to the window comparator and to the signal device for activating the signal device as a function of the comparisons made by the window comparator.
Claim 7
Dependent Claim
26 words
The electronic device according to claim 1, wherein a first capacitance of the capacitor is less than a second capacitance sufficient to activate the ignition element.
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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) | 2001-03-30 | 2001-09-29 | 2002-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-30 | 2005-09-29 | 2006-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-30 | 2009-09-29 | 2010-03-31 | $7700.00 | Window Closed / Lapsed |