IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0658820
(2005-07-01)
|
등록번호 |
US-7665763
(2010-04-09)
|
우선권정보 |
GB-0418122.8(2004-08-13) |
국제출원번호 |
PCT/SE2005/001055
(2005-07-01)
|
§371/§102 date |
20070126
(20070126)
|
국제공개번호 |
WO06/016840
(2006-02-16)
|
발명자
/ 주소 |
- Björklund, Kent-Ake
- Johannson, Mats
- Qvint, Peter
|
출원인 / 주소 |
|
대리인 / 주소 |
Harness, Dickey & Pierce, P.L.C.
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
11 |
초록
▼
An inflator for an air-bag comprises at least one gas bottle (1, 2) containing pressurized gas. The gas bottle is sealed by a rupturable foil (9). There is a support member (15) engaging the rupturable foil to maintain it in an unruptured state. The support member (15) is retained in an initial posi
An inflator for an air-bag comprises at least one gas bottle (1, 2) containing pressurized gas. The gas bottle is sealed by a rupturable foil (9). There is a support member (15) engaging the rupturable foil to maintain it in an unruptured state. The support member (15) is retained in an initial position by a part (23) of a piston element (20) which directly engages the support member (15). The piston element (20) is associated with a squib (11) to drive the piston element from an initial position to a release position in which the piston element no longer engages the support member (15). This permits the support member (15) to move to a position in which the foil (9) will rupture to permit gas to escape from the bottle. The preferred embodiment has two gas bottles each sealed by a respective foil each maintained by a support member which directly engages a single piston member.
대표청구항
▼
The invention claimed is: 1. An inflator for an air-bag, the inflator comprising at least one gas bottle containing pressurised gas, the gas bottle being sealed by a rupturable foil; and a support member having a base and a transversely extending support arm engaging the rupturable foil to maintain
The invention claimed is: 1. An inflator for an air-bag, the inflator comprising at least one gas bottle containing pressurised gas, the gas bottle being sealed by a rupturable foil; and a support member having a base and a transversely extending support arm engaging the rupturable foil to maintain the rupturable foil in an un-ruptured state, the support arm being mounted in a position and retained in the position by a piston element, the piston element including a piston rod having a longitudinal axis with a piston head positioned at one end of the rod and extending outwardly therefrom and a support flange positioned at a longitudinally opposite end of the rod and extending transversely therefrom so as to directly engage the support arm, the piston rod extending through an axial bore in the base of the support member such that the support flange is disposed on one side of the base and the piston head is disposed on an opposite side of the base as the support flange, the piston element being associated with a squib to drive the piston element via engagement with the piston head from an initial position to a release position in which the support flange no longer engages the support arm, thereby permitting the support arm to pivot inwardly in a direction away from the foil and the gas bottle to a position in which the foil will rupture to permit gas to escape from the gas bottle. 2. An inflator according to claim 1 wherein the support arm is yieldable, and is configured to yield in response to the pressure of the gas in the gas bottle exceeding a predetermined threshold, thus enabling the foil to rupture. 3. An inflator according to claim 2 wherein the support arm has a line of mechanical weakness such that the line of mechanical weakness will break and the support arm will yield when gas pressure in the gas bottle exceeds the predetermined threshold, thus enabling the foil to rupture. 4. The inflator according to claim 1 in combination with the air-bag. 5. The inflator according to claim 1, wherein the support arm further comprises a line of mechanical weakness positioned proximate the base, the support arm being arranged to pivot inwardly about the line of mechanical weakness in a direction away from the foil and the gas bottle to a position in which the foil will rupture to permit gas to escape from the gas bottle. 6. The inflator according to claim 1, wherein the squib, piston element and aperture in the base of the support member are each disposed about a common longitudinal axis. 7. The inflator of claim 1, wherein the squib includes a tubular support member receiving the squib therein so as to have a portion extend beyond the squib, the portion of the support member extending beyond the squib supporting the base of the support member and forming a chamber that slidably receives the piston head therein. 8. An inflator for an air-bag, the inflator comprising first and second gas bottles each containing pressurised gas, the gas bottles each being sealed by a rupturable foil; and a support member engaging each of the respective rupturable foils to maintain the rupturable foils in an un-ruptured state, the support members each being mounted in a position and retained in the position by a part of a piston element which directly engages each of the support members, the piston element being associated with a squib to drive the piston element from an initial position to a release position in which the piston element no longer engages the support members, thereby permitting each of the support members to pivot inwardly in a direction away from a respective one of the foils and the corresponding first or second gas bottle to a position in which each foil will rupture to permit gas to escape from the corresponding gas bottle; wherein the support members associated with the first and second gas bottles form part of a single bracket, the support members being engaged by respective parts of a single piston element. 9. An inflator according to claim 8 wherein each gas bottle is sealed by a respective one of two parallel spaced-apart planar walls, each wall defining a respective aperture, each aperture being sealed by a respective rupturable foil, the piston being provided in a chamber defined between the two walls. 10. An inflator according to claim 8 wherein the first bottle contains one of a fuel and an oxidisable gas and the second bottle contains an oxidising gas. 11. An inflator according to claim 10 wherein the one of the fuel and the oxidisable gas is selected from the group comprising hydrogen, ethane, methane, propane and butane. 12. An inflator according to claim 11 wherein the oxidisable gas is mixed with at least one inert gas. 13. An inflator according to claim 11 wherein the oxidising gas is selected from the group comprising air, oxygen and nitrous oxide, and wherein the oxidising gas is mixed with at least one inert gas. 14. An inflator according to claim 8 wherein a flame channel is provided from the squib to the exterior of the inflator to ignite mixed gas from the first and second gas bottles. 15. An inflator according to claim 8 wherein a second squib is provided to ignite mixed gas from the first and second gas bottles, the second squib being mounted adjacent the first squib and including a flame guide. 16. An inflator according to claim 15 wherein the second squib is mounted on the exterior of the inflator. 17. An inflator for an air-bag, the inflator comprising: first and second gas bottles each containing pressurised gas, the gas bottles each being sealed by a rupturable foil; a support member having a base and upwardly extending support arms positioned at each end of the base and substantially perpendicular to the base, each of the support arms being mounted in a position to directly engage one of the respective rupturable foils to maintain the rupturable foils in an un-ruptured state; a piston element including a piston rod having a longitudinal axis with a piston head positioned at one end of the rod and extending outwardly therefrom and a support flange positioned at a longitudinally opposite end of the rod and extending transversely therefrom, the support flange being positioned to directly engage an upper end of each support arm opposite the base to retain the support arms in direct engagement with the foils, the piston rod extending through a central axial bore in the base of the support member such that the support flange is disposed on one side of the base and the piston head is disposed on an opposite side of the base as the support flange; and a squib configured to drive the piston element via the piston head from an initial position to a release position in which the support flanges of the piston element no longer engage the support arms, thereby permitting each of the support arms to pivot inwardly in a direction away from a respective one of the foils and the corresponding first or second gas bottle to a position in which each foil will rupture to permit gas to escape from the corresponding gas bottle. 18. The inflator according to claim 17, wherein each support arm further comprises a line of mechanical weakness positioned proximate the base, and wherein each support arm is arranged to pivot inwardly about the line of mechanical weakness in a direction away from a respective one of the foils and corresponding gas bottles to a position in which the respective foil will rupture to permit gas to escape from the corresponding gas bottle. 19. The inflator according to claim 17, wherein the first bottle contains one of a fuel and an oxidisable gas and the second bottle contains an oxidising gas. 20. An inflator according to claim 17 wherein a second squib is provided to ignite mixed gas from the first and second gas bottles, and wherein the second squib is mounted adjacent the first squib and is provided with a flame-guide.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.