IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0883690
(2006-01-31)
|
등록번호 |
US-8177875
(2012-05-15)
|
국제출원번호 |
PCT/US2006/004639
(2006-01-31)
|
§371/§102 date |
20080404
(20080404)
|
국제공개번호 |
WO2006/084282
(2006-08-10)
|
발명자
/ 주소 |
- Rogers, Robert
- Kahlbaugh, Brad
- Kojetin, Paul
- Dema, Keh
|
출원인 / 주소 |
|
대리인 / 주소 |
Pauly, DeVries Smith & Deffner, L.L.C.
|
인용정보 |
피인용 횟수 :
26 인용 특허 :
409 |
초록
Crankcase ventilation arrangements are shown. Preferred wet laid media materials, for use in such arrangements are described. Also described and shown are example crankcase ventilation components, parts for use with a preferred media described and characterized.
대표청구항
▼
1. A crankcase ventilation filter including: (a) a first, wet laid, media stage comprising: (i) at least 30% by weight, based on total weight of fiber material in the stage, bi-component fiber material having an average largest fiber cross-sectional dimension of at least 10 microns and average lengt
1. A crankcase ventilation filter including: (a) a first, wet laid, media stage comprising: (i) at least 30% by weight, based on total weight of fiber material in the stage, bi-component fiber material having an average largest fiber cross-sectional dimension of at least 10 microns and average length of 1-20 mm, inclusive; and(ii) at least 30% by weight, based on total weight of fiber material in the stage, secondary fiber material having an average largest fiber cross-sectional dimension of at least 1 micron and average length of 1 to 20 mm, inclusive,(b) the first, wet laid, media stage having (i) calculated pore size, X-Y direction, of 12 to 50 microns, inclusive; and(ii) an added binder resin content, if any, of no greater than 7% by total weight of fiber material; and(iii) a tubular construction. 2. A crankcase ventilation filter according to claim 1 wherein: (a) the wet laid media stage comprises a plurality of layers of wet laid fiber sheet and an overall media thickness of at least 6 mm. 3. A crankcase ventilation filter according to claim 2 wherein: (a) the tubular media construction is positioned in extension between first and second end caps. 4. A crankcase ventilation filter according to claim 1 wherein: (a) the first wet laid media stage has a fiber treatment therein selected from the group consisting essentially of silicone and fluorochemical fiber treatment materials. 5. A crankcase ventilation filter according to claim 1 wherein: (a) the first wet laid media stage comprises 45 to 70%, by weight, of the bi-component fiber material;(b) 30 to 55%, by weight, of the secondary fiber material; and,(c) no more than 3%, by weight of total fiber content, added binder resin, if any. 6. A crankcase ventilation arrangement according to claim 1 wherein: (a) a second media stage on a downstream side of the first, wet laid, media stage; (i) the second media stage having a different total efficiency than the first, wet laid, media stage. 7. A crankcase ventilation arrangement according to claim 6 wherein: (a) the first wet laid media stage comprises a plurality of layers of wet laid fiber sheet and an overall media thickness of at least 12 mm.; and,(b) the second media stage is wrapped around the first, wet laid, media stage. 8. A crankcase ventilation arrangement according to claim 7 wherein: (a) the second media stage is a second, wet laid, media stage comprising: (i) at least 30% by weight, based on total fiber weight in the stage bi-component fiber material having an average largest fiber cross-sectional dimension of at least 10 microns and an average length of 1-20 mm, inclusive;(ii) at l east 30% by weight secondary fiber material having an average largest fiber cross-sectional dimension of at least 1 micron and average length of 1 to 20 mm, inclusive;(iii) calculated pore size, X-Y direction, of 12 to 50 microns, inclusive; and, (iv) an added binder resin content of no greater than 7% by total weight of fiber material. 9. A crankcase ventilation filter according to claim 1 wherein: (a) the first, wet laid, media stage comprises 20 to 70 wraps of coiled wet laid media. 10. A crankcase ventilation filter according to claim 1 wherein: (a) the bi-component fiber material has an average length of 1 to 10 mm;(b) the bi-component fiber material comprises polyester bi-component fiber material; and,(c) the secondary fiber material comprises fibers selected from glass fibers, polyester fibers, metal fibers and mixtures of two or more of glass fibers, polyester fibers and metal fibers. 11. A crankcase ventilation filter according to claim 10 wherein: (a) the secondary fiber material is polyester fibers. 12. A crankcase ventilation filtration assembly comprising: (a) a housing including a gas flow inlet arrangement, a gas flow outlet arrangement and a liquid drain outlet arrangement; and,(b) a serviceable crankcase ventilation filter operably positioned within the housing and comprising: (i) a first, wet laid, media stage comprising: (A) at least 30% by weight bi-component fiber material having an average largest fiber cross-sectional dimension of at least 10 microns and an average length of 1-20 mm, inclusive;(B) at least 30% by weight secondary fiber material having an average largest fiber cross-sectional dimension of at least 1 micron and average length of 1 to 20 mm, inclusive; and(ii) the first, wet laid, media stage having: (A) calculated pore size, X-Y direction, of 12 to 50 microns, inclusive; and,(B) an added binder resin content of no greater than 7% by total weight of fiber material. 13. A crankcase ventilation filtration assembly according to claim 12 wherein: (a) the first, wet laid, media stage is tubular; is positioned for in-to-out filtering flow; and has a height of 101 to 305 mm. 14. A crankcase ventilation filtration assembly according to claim 13 wherein: (a) the liquid drain outlet arrangement is configured for liquid flow through a portion of the gas flow inlet arrangement.
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