US4026580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature maintaining device for safety gas cushion
Assignee: Daimler Benz AG
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Filing: 1971-11-01
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Granted: 1977-05-31
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Expires: 1991-11-01
Abstract
Abstract A device is disclosed for maintaining the pressurized gas source at a desired temperature in an inflatable, vehicle passenger, safety cushion system. The gas source is heated by a heating source such as the engine cooling water, air heated by the exhaust, or electrical energy, for example. A control system enables heating when the temperature of the gas source is below the desired temperature and disables heating when the gas source temperature is above the desired temperature.
Inventors
- 👤 Helmut Wulf
- 👤 Gerhard Schiesterl
- 👤 Hansjurgen Scholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:09
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/26; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6606
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
126 words
A safety device for the protection of a vehicle occupant, comprising: an inflatable cushion means, a compressed gas source means, means for automatically communicating said gas source means with said cushion means for inflation thereof in response to a vehicle exceeding a predetermined deceleration, means for maintaining said gas source means at a predetermined temperature, said maintaining means including heating means operative for heating said gas source means, and control means for controlling the heating means in dependence upon the temperature of said gas source means, said control means rendering said heating means operative when the temperature of said gas source means is below said predetermined temperature and rendering said heating means inoperative when the temperature of said gas source means reaches approximately said predetermined temperature.
Claim 2
Dependent Claim
126 words
A safety device for the protection of a vehicle occupant, comprising: an inflatable cushion means, a compressed gas source means, means for automatically communicating said gas source means with said cushion means for inflation thereof in response to a vehicle exceeding a predetermined deceleration, means for maintaining said gas source means at a predetermined temperature, said maintaining means including heating means operative for heating said gas source means, and control means for controlling the heating means in dependence upon the temperature of said gas source means, said control means rendering said heating means operative when the temperature of said gas source means is below said predetermined temperature and rendering said heating means inoperative when the temperature of said gas source means reaches approximately said predetermined temperature.
Claim 3
Dependent Claim
17 words
A safety device according to claim 1, wherein said gas source means is a compressed gas tank.
Claim 4
Dependent Claim
18 words
A safety device according to claim 1, wherein said gas source means is a compressed gas producing installation.
Claim 5
Dependent Claim
19 words
A safety device according, to claim 1, wherein said control means includes thermostat means for controlling said heating means.
Claim 6
Dependent Claim
24 words
A safety device according to claim 4, wherein other parts of the safety device are also adapted to be heated by said heating means.
Claim 7
Dependent Claim
25 words
A safety device according to claim 4, wherein said cushion means in the rest position is also adapted to be heated by said heating means.
Claim 8
Dependent Claim
30 words
A safety device according to claim 6, further comprising a cooling water temperature indicating means interconnected with a vehicle cooling system for indicating the readiness of the gas cushion system.
Claim 9
Dependent Claim
20 words
A safety device according to claim 7, wherein said cooling water temperature indicating means is used directly as readiness indicator.
Claim 10
Dependent Claim
23 words
A safety device according to claim 7, wherein said cooling water temperature indicating means is used as a component of the readiness indicator.
Claim 11
Dependent Claim
23 words
A safety device according to claim 1, wherein other parts of the device are also adapted to be heated by the heating means.
Claim 12
Dependent Claim
25 words
A safety device according to claim 1, wherein said cushion means in the rest position is also adapted to be heated by the heating means.
Claim 13
Dependent Claim
30 words
A safety device according to claim 1, further comprising a cooling water temperature indicating means interconnected with a vehicle cooling system for indicating the readiness of the gas cushion system.
Claim 14
Dependent Claim
20 words
A safety device according to claim 12, wherein said cooling water temperature indicating means is used directly as readiness indicator.
Claim 15
Dependent Claim
23 words
A safety device according to claim 12, wherein said cooling water temperature indicating means is used as a component of the readiness indicator.
Claim 16
Dependent Claim
29 words
A safety device according to claim 1, wherein said heating means includes a jacket disposed substantially around said gas source means for maintaining the temperature thereof within predetermined limits.
Claim 17
Dependent Claim
23 words
A safety device according to claim 15, wherein said jacket is a fluid jacket operatively connected to the cooling system of the vehicle.
Claim 18
Dependent Claim
17 words
A safety device according to claim 16 wherein said gas source means includes a compressed gas tank.
Claim 19
Dependent Claim
21 words
A safety device according to claim 17, wherein said means for automatically inflating said gas cushion means includes a powder charge.
Claim 20
Dependent Claim
22 words
A safety device according to claim 18, wherein said control means includes a thermostat means for controlling the temperature of said jacket.
Claim 21
Dependent Claim
23 words
A safety device according to claim 19, wherein a temperature indicating means is provided for indicating the readiness of the gas cushion system.
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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) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |