[특허]Filter with locating feature

Automotive Systems Laboratory, Inc.

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Filter with locating feature

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-046/00 B60R-021/264 B60R-021/26
미국특허분류(USC)	055/525; 055/385.3; 280/728.1; 280/736; 280/740; 280/741; 422/305
출원번호	US-0976119 (2004-10-28)
등록번호	US-7341615 (2008-03-11)
발명자 / 주소	Hardenburg,Robert M.
출원인 / 주소	Automotive Systems Laboratory, Inc.
대리인 / 주소	L.C. Begin & Associates, PLLC
인용정보	피인용 횟수 : 2 인용 특허 : 31

초록
▼

A filter (10) and an inflator assembly (15) for use in an inflatable vehicle passenger restraint system. The inflator assembly (15) includes an inflator housing (70) having a wall (71), a combustion chamber (72) formed in an interior of the housing (70), and a gas generant composition positioned in the combustion chamber (72) and ignitable to provide inflation gas to the inflatable occupant restraint system. The filter (10) is positioned intermediate apertures (73) in the combustion chamber (72) and apertures (19) in the inflator housing wall (71). The filter (10) includes a filter body (11) spaced apart from the housing wall (71) and at least one continuous lip (12) extending from the filter body (11). The lip (12) has a peripheral edge (75) that abuts the housing wall (71) over substantially the entire perimeter of the peripheral edge (75). The lip (12) aids in positioning the filter (10) within an inflator housing (70) and in maintaining the position of the filter (10) within the housing (70) during passage of combustion gases through the filter (10).

대표
청구항
▼

The invention claimed is: 1. A filter comprising: a body having an axis extending therethrough, a first end, and a second end opposite the first end; and at least two lips formed from a filter material, the lips extending from the filter body and enclosing an area defined by a cross-section of the body taken substantially perpendicular to the axis. 2. The filter of claim 1 wherein the body is formed from a wire mesh. 3. The filter of claim 2 wherein the wire mesh is a metallic wire mesh. 4. The filter of claim 2 wherein at least one lip is formed from a wire mesh. 5. The filter of claim 4 wherein the at least one lip is woven into the body during fabrication of the body. 6. The filter of claim 4 wherein at least one of the lips and the body have substantially equal densities. 7. The filter of claim 4 wherein the body has a substantially uniform density and at least one of the lips has a substantially uniform density. 8. The filter of claim 1 wherein the body is substantially cylindrical. 9. The filter of claim 8 wherein each of the lips extends radially outwardly from a peripheral surface of the body. 10. The filter of claim 1 wherein at least one lip is positioned at an end of the filter body. 11. The filter of claim 10 wherein the second continuous lip is positioned at the other end of the filter body. 12. The filter of claim 1 wherein at least one lip is positioned intermediate the first and second ends of the body. 13. The filter of claim 1 wherein the lips are spaced apart and positioned intermediate the first and second ends of the body. 14. The filter of claim 1 wherein at least one of the lips is formed from a wire mesh. 15. The filter of claim 14 wherein the wire mesh is a metallic wire mesh. 16. The filter of claim 1 wherein at least one lip is formed integral with the body. 17. The filter of claim 16 wherein the at least one lip is formed by deforming a portion of a peripheral surface of the body. 18. The filter of claim 16 wherein the at least one lip is formed by outwardly bending an edge of the end of the filter body. 19. An inflator assembly for an inflatable occupant restraint system in a motor vehicle, the inflator comprising: an inflator housing having a wall with at least one aperture formed therein to enable fluid communication between an interior of the housing and an exterior of the housing; a combustion chamber formed in an interior of the housing and including at least one aperture formed therein te enable fluid communication between an interior of the combustion chamber and an exterior of the chamber; a gas generant composition positioned in the combustion chamber and ignitable to provide inflation gas to the inflatable occupant restraint system; and a filter positioned intermediate the at least one aperture in the combustion chamber and the at least one aperture in the inflator housing, the filter having a body spaced apart from the housing wall and at least one lip extending from the body, the at least one lip having a peripheral edge that abuts the housing wall over substantially the entire perimeter of the peripheral edge for positioning the filter within a housing and maintaining the position of the filter within the housing during passage of a fluid through the filter,and a retaining disk secured to the housing to retain the filter within the housing, wherein a wall of the combustion chamber separates the gas generant from the filter. 20. The inflator assembly of claim 19 wherein the retaining disk engages the housing in an interference fit. 21. An inflator assembly for an inflatable occupant restraint system in a motor vehicle, the inflator comprising: an inflator housing having a wall with at least one aperture formed therein to enable fluid communication between an interior of the housing and an exterior of the housing: a combustion chamber formed in an interior of the housing and including at least one aperture formed therein to enable fluid communication between an interior of the combustion chamber and an exterior of the chamber; a gas generant composition positioned in the combustion chamber and ignitable to provide inflation gas to the inflatable occupant restraint system; and a filter positioned intermediate the at least one aperture in the combustion chamber and the at least one aperture in the inflator housing, the filter having a body spaced apart from the housing wall and at least one lip extending from the body, the at least one lip having a peripheral edge that abuts the housing wall over substantially the entire perimeter of the peripheral edge for positioning the filter within a housing and maintaining the position of the filter within the housing during passage of a fluid through the filter, wherein a wall of the combustion chamber separates the gas generant from the filter, and wherein the filter body has a first end and a second end opposite the first end, the at least one lip is positioned intermediate the first and second ends of the filter body, the at least one aperture formed in the combustion chamber is positioned intermediate the first and second ends of the filter body, and the at least one aperture in the housing wall is positioned so that the at least one lip extending from the filter body intersects a fluid flow path extending between the at least one combustion chamber aperture and the at least one housing wall aperture. 22. An inflator assembly for an inflatable occupant restraint system in a motor vehicle, the inflator comprising: an inflator housing having a wall with at least one aperture formed therein to enable fluid communication between an interior of the housing and an exterior of the housing; a combustion chamber formed in an interior of the housing and including at least one aperture formed therein to enable fluid communication between an interior of the combustion chamber and an exterior of the chamber; a gas generant composition positioned in the combustion chamber and ignitable to provide inflation gas to the inflatable occupant restraint system; and a filter positioned intermediate the at least one aperture in the combustion chamber and the at least one aperture in the inflator housing, the filter having a body spaced apart from the housing wall and at least one lip extending from the body, the at least one lip having a peripheral edge that abuts the housing wall over substantially the entire perimeter of the peripheral edge for positioning the filter within a housing and maintaining the position of the filter within the housing during passage of a fluid through the filter, wherein a wall of the combustion chamber separates the gas generant from the filter, wherein the filter body has a first end and a second end opposite the first end, and wherein a pair of lips extends from the filter body, the lips being spaced apart and positioned intermediate the first and second ends of the body. 23. The inflator assembly of claim 22 wherein the at least one aperture formed in the combustion chamber is positioned intermediate an end of the filter body and one of the lips extending from the filter body, and the at least one aperture in the housing wall is positioned so that both of the lips extending from the filter body intersect a fluid flow path extending between the at least one combustion chamber aperture and the at least one housing wall aperture. 24. An inflator assembly for an inflatable occupant restraint system in a motor vehicle, the inflator comprising: an inflator housing having a wall with at least one aperture formed therein to enable fluid communication between an interior of the housing and an exterior of the housing; a combustion chamber formed in an interior of the housing and including at least one aperture formed therein to enable fluid communication between an interior of the combustion chamber and an exterior of the chamber; a gas generant composition positioned in the combustion chamber and ignitable to provide inflation gas to the inflatable occupant restraint system; and a filter positioned intermediate the at least one aperture in the combustion chamber arid the at least one aperture in the inflator housing, the filter having body spaced apart from the housing wall and at least one lip extending from the body, the at least one lip having a peripheral edge abuts the housing wall over substantially the entire perimeter of the peripheral edge for positioning the fitter within a housing and maintaining the position of the filter within the housing during passage of a fluid through the filter, wherein a wall of the combustion chamber separates the gas generant from the filter, and wherein the filter has two lips formed from a filter material. 25. A wire mesh filter for an inflator in an inflatable occupant restraint system, comprising: a substantially cylindrical body having a first end and a second end opposite the first end; and at least two continuous, annular lips formed from a filter material and extending radially outwardly from a peripheral surface of the body. 26. The filter of claim 25 wherein the filter is formed from a metallic wire mesh. 27. The filter of claim 25 wherein at least one lip is positioned at the first end of the filter body. 28. The filter of claim 27 wherein another lip is positioned at the second end of the filter body. 29. The filter of claim 25 wherein at least one lip is positioned intermediate the first and second ends of the body. 30. The filter of claim 25 wherein the at least two lips are spaced apart and positioned intermediate the first and second ends of the body. 31. The filter of claim 25 wherein at least one lip is formed integral with the body. 32. The filter of claim 31 wherein the at least one lip is formed by deforming a portion of a peripheral surface of the body. 33. The filter of claim 31 wherein the at least one lip is formed by outwardly bending an edge of the end of the filter body. 34. The filter of claim 25 wherein at least one lip is formed from a wire mesh. 35. The filter of claim 34 wherein the at least one lip is woven into the wire mesh of the body during fabrication of the body. 36. The filter of claim 34 wherein the at least one lip and the body have substantially equal densities. 37. The filter of claim 34 wherein the body has a substantially uniform density and the at least one lip has a substantially uniform density. 38. An airbag system comprising: at least one airbag; and an airbag inflator coupled to the airbag so as to enable fluid communication with an interior of the airbag for inflating the airbag in the event of a collision, the inflator including a filter for filtering combustion gases generated by the inflator, the filter comprising a body having an axis extending therethrough, a first end, and a second end opposite the first end, and at least two lips formed from a filter material, the lips extending from the filter body and enclosing an area defined by a cross-section of the body taken substantially perpendicular to the axis. 39. A vehicle occupant restraint system comprising: an airbag system including at least one airbag and an airbag inflator coupled to the airbag so as to enable fluid communication with an interior of the airbag for inflating the airbag in the event of a collision, the inflator including a filter for filtering combustion gases generated by the inflator, the filter comprising a body having an axis extending therethrough, a first end, and a second end opposite the first end, and at least two lips (termed from a filter material, the lips extending from the filter body and enclosing an area defined by a cross-section of the body taken substantially perpendicular to the axis; a safety belt assembly including a housing and a safety belt extending from the housing.

이 특허에 인용된 특허 (31)

이 특허를 인용한 특허 피인용횟수: 2

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Filter with locating feature

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이 특허에 인용된 특허 (31)

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Filter with locating feature

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이 특허에 인용된 특허 (31)

이 특허를 인용한 특허 피인용횟수: 2

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