Patent US4381829A successfully refreshed from Google Patents.
US4381829A
Expired / Lapsed
US
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Collision detection system with safety devices
Assignee: Renault SA
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Filing: 1980-10-20
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Granted: 1983-05-03
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Expires: 2000-10-20
Abstract
Abstract A system for use in a motor vehicle, made up of a group of sensors such as accelerometers, a microprocessor, and a group of passenger-safety devices. The sensors' inform the microprocessor of the levels of acceleration at different points in the vehicle. The microprocessor processes this information, checks the sensors' functioning, the power source and the safety devices. In the case of a strong shock, the microprocessor triggers the safety devices suited to the particular situation: electromagnetic door-openers, safety belts with pyrotechnic tightening action, inflatable air bags, and loosening devices for safety belts.
Inventors
- 👤 Bernard Montaron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:48
CPC Classifications
E; E05; E05B; E05B77/00; E05B77/02; E05B77/12; B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/50; B60Q1/52; B60R; B60R21/00; B60R21/01
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
152 words
A system for detecting a collision in a vehicle, comprising: a plurality of sensor means for providing measurements based on the vehicle's acceleration; a plurality of passenger safety means which are controlled by pyrotechnic actuated devices triggered by the function of triggering resistors; computer means for receiving data from said sensor means and operating said passenger safety means in accordance wih said data; wherein said data is compared to levels recorded in the computer means and said passenger safety means are actuated if said levels are exceeded; and testing means responsive to an output of said computer means for applying current for a short time to said triggering resistors so as not to trigger said devices wherein the current applied is equal in magnitude to the current which triggers said devices; wherein the computer means operates in a manner to test the operation of the system and record any failures of operation.
Claim 2
Independent Claim
152 words
A system for detecting a collision in a vehicle, comprising: a plurality of sensor means for providing measurements based on the vehicle's acceleration; a plurality of passenger safety means which are controlled by pyrotechnic actuated devices triggered by the function of triggering resistors; computer means for receiving data from said sensor means and operating said passenger safety means in accordance wih said data; wherein said data is compared to levels recorded in the computer means and said passenger safety means are actuated if said levels are exceeded; and testing means responsive to an output of said computer means for applying current for a short time to said triggering resistors so as not to trigger said devices wherein the current applied is equal in magnitude to the current which triggers said devices; wherein the computer means operates in a manner to test the operation of the system and record any failures of operation.
Claim 3
Dependent Claim
30 words
The system for detecting a collision of claim 1, wherein the safety means include: safety belts which are tightened by pyrotechnic actuated devices; and air bags inflatable by pyrotechnic devices.
Claim 4
Dependent Claim
30 words
The system for detecting a collision of claim 1, wherein said computer means further comprises: memory means for recording said measurement when a collision occurs and said failures of operation.
Claim 5
Dependent Claim
34 words
The system for detecting a collision of claim 3, further comprising: a supplementary circuit means for reading out data from parts of said memory means, by plugging said supplementary circuit into said computer means.
Claim 6
Dependent Claim
17 words
The system for detecting a collision of claim 1, wherein: said sensors are of the piezoelectric type.
Claim 7
Dependent Claim
38 words
The system for detecting a collision of claim 1, wherein: the principal power source for the system is the vehicle battery; and wherein a supplementary power source is used in case of failure of the principal power source.
Claim 8
Dependent Claim
35 words
The system for detecting a collision of claim 1, wherein: said sensor means are tested by comparing the signal from each sensor means with the mean of the signals from a plurality of sensor means.
Claim 9
Dependent Claim
19 words
The system for detecting collision of claim 1, further comprising: warning signal means for indicating a failure of operation.
References Cited (Backward Citations)
US3622974A
Cited
US3701903A
Cited
US3633159A
Cited
US3921129A
Cited
US3916376A
Cited
US3863208A
Cited
US3964016A
Cited
DE2352897A1
Cited
US4087782A
Cited
FR2271956B1
Cited
US4117730A
Cited
FR2345317B3
Cited
US4178016A
Cited
FR2357405B1
Cited
FR2366030A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-02 | 1986-11-01 | 1987-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-02 | 1990-11-01 | 1991-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-02 | 1994-11-01 | 1995-05-03 | $7700.00 | Window Closed / Lapsed |