US4984464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acceleration responsive circuit for actuantinc vehicle equipment
Assignee: Sensata Technologies Ltd
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Filing: 1988-03-31
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Granted: 1991-01-15
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Expires: 2008-03-31
Abstract
Abstract An acceleration responsive circuit is provided including an electronic accelerometer having an analog electrical signal output representative of detected acceleration which signal is inputted into an analog/digital converter to provide a digital signal in response to the accelerometer output together with an integrator for integrating the digital signal and, in the event a threshold acceleration has been exceeded, an operating circuit is energized to activate selected equipment such as, for example, the inflator for an airbag.
Inventors
- 👤 Alan D. Thomas
- 👤 Hoshmand Kalami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:52
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/01; B60R21/013; B60R21/0132; B60R21/0133
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
62 words
An acceleration responsive device comprising an electronic accelerometer providing an analog voltage output representative of acceleration detected and a reference voltage output representative of zero acceleration, an analogue/digital converter receiving the analogue and reference voltage outputs to digital signals and subtracting the digital signals from each other to provide resultant digital signal outputs and an integrator for integrating the resultant digital signals.
Claim 2
Dependent Claim
62 words
An acceleration responsive device comprising an electronic accelerometer providing an analog voltage output representative of acceleration detected and a reference voltage output representative of zero acceleration, an analogue/digital converter receiving the analogue and reference voltage outputs to digital signals and subtracting the digital signals from each other to provide resultant digital signal outputs and an integrator for integrating the resultant digital signals.
Claim 3
Dependent Claim
26 words
A device as claimed in claim 1 and further including a threshold detector to inhibit said analogue electrical signal output until a predetermined acceleration is reached.
Claim 4
Dependent Claim
29 words
A device as claimed in claim 2 and further including a line delay to inhibit said analogue voltage output until a predetermined acceleration is reached for a predetermined period.
Claim 5
Dependent Claim
28 words
A device as claimed in claim 1 and further including means to reset the device a predetermined time after the integrator starts to integrate the analogue voltage output.
Claim 6
Dependent Claim
20 words
An acceleration responsive device according to claim 1 wherein the device is adapted to be installed in a road vehicle.
References Cited (Backward Citations)
US3459053A
Cited
US4410875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-14 | 1994-07-16 | 1995-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-14 | 1998-07-16 | 1999-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-14 | 2002-07-16 | 2003-01-15 | $7700.00 | Window Closed / Lapsed |