[특허]Filter element and method of making

[미국특허] Filter element and method of making 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-027/06 B01D-027/00
출원번호	US-0829714 (2001-04-10)
등록번호	US-7438812 (2008-10-21)
발명자 / 주소	Denton,Donald Ray Smallwood,Edward Arthur O'Meara,Kevin Scott
출원인 / 주소	Parker Hannifin Corporation
대리인 / 주소	Renner, Otto, Boisselle & Sklar, LLP
인용정보	피인용 횟수 : 10 인용 특허 : 22

초록 ▼

A filter element (10) is provided which can be used to remove microsize contaminant particles (i.e., about 0.5 μm to about 25.0 μm) from aviation fuel. The filter element (10) includes a cylindrical pleated filter media (14) and an exoskeleton support structure (16) supporting the filter media (14). The filter media (14) has a pleat density of about eight to about thirteen pleats per inner diameter inch and is formed only from cellulose-fiber-free and woven-mesh-free layers. The exoskeleton support structure (16) is a screen which is thermally bonded to the pleats' peaks in such a manner that the filter media (14) is sufficiently supported without conventional endoskeleton support layers.

대표청구항 ▼

The invention claimed is: 1. A filter element comprising a cylindrical filter media and an exoskeleton for the filter media; the filter media being formed from only cellulose-fiber-free and woven-mesh-free layers which are folded to form a plurality of longitudinally-extending pleats having radially inner-peaks defining an inner diameter and radially-outer peaks defining an outer diameter; the exoskeleton comprising a support screen thermally bonded to the radially-outer peaks of the filter media, providing an at least 50% open flow area, and providing a tight array of attachment points supporting the pleats in an appropriately spaced and non-collapsed condition; the support screen comprising a sheet of screen material having a width approximately equal to the axial dimension of the filter media; the filter element being characterized by the absence of cellulose-fiber and woven-mesh endoskeleton support layers in the filter media and by the absence of a support structure surrounding the support screen. 2. A filter element as set forth in claim 1, wherein the layers comprise an inner layer, an outer layer, and a filtration layer therebetween; and wherein the filter media has a density of about 8 or more pleats per inner diameter inch. 3. A filter element as set forth in claim 2, wherein the layers of the filter media consist essentially of the inner layer, the outer layer, the filtration layer. 4. A filter element as set forth in claim 2, wherein the inner layer is made of a non-woven polymer, the outer layer is made of a non-woven polymer, and the filtration layer is made of fiberglass or at least one polymer. 5. A filter element as set forth in claim 2, wherein the inner and outer layers each have a thickness of less than about 0.030 inches. 6. A filter element as set forth in claim 1, wherein the layers of the filter media consist essentially of an inner layer, an outer layer, and a filtration layer therebetween; and wherein the filtration layer is made of at least one of fiberglass, nylon, polyamide, polyester, polyethylene, polypropylene, or mixtures thereof, and wherein the inner and outer layers each have a thickness less than about 0.030 inches and are made of a non-woven polymer. 7. A filter element as set forth in claim 1, wherein support screen comprises a first set of cords extending in a first direction, a second set of cords extending in a second direction and intersecting with the first set of cords, and openings defined therebetween; wherein adjacent cords in the first set are separated from each other by a distance d1, adjacent cords in the second set are separated from each other by a distance d2, and adjacent radially-outer peaks are separated from each other by a distance dpleat; and wherein the distance d1 between the first set of cords is about half to about twice the distance dpleat between adjacent radially-outer peaks. 8. A filter element as set forth in claim 1, wherein the sheet of screen material has a length approximately equal to the circumferential dimension of the filter media plus a seam allowance and the support screen has lateral edges joined together at a side seam. 9. A filter element as set forth in claim 8, wherein the side seam extends substantially parallel to a longitudinal axis of the filter media. 10. A filter element as set forth in claim 8, wherein the lateral edges overlap and are thermally bonded together to form the side seam. 11. A filter element as set forth in claim 1, wherein the support screen is made of a PVC coated fiberglass mesh. 12. A filter element as set forth in claim 1, wherein the filter element is a microfilter element for removing impurities in the range of about 0.5 μm to about 25.0 μm from hydrocarbon fuel. 13. A filter element as set forth in claim 1, wherein the filter media is a coalescer element for removing free water and particulate from aviation fuel.

이 특허에 인용된 특허 (22) 인용/피인용 타임라인 분석

Williamson Kenneth M. (Jamesville NY) Whitney Scott A. (Marathon NY) Rausch Alan R. (Cortland NY) Welch ; Jr. Thomas C. (Homer NY), Apparatus for separating the components of a liquid/liquid mixture.
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Zraik Edward M., Color coded side seam label for filter element.
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Cella Albert F. ; Gembolis Donald J. ; Shane Bruce E., Coreless non-metallic filter element.
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Whitney Scott A. ; Williamson Kenneth M. ; Clendenning Michael A. ; Hibbard James R. ; Griffin Angela M., Elements and methods for coalescing a discontinuous phase of a fluid from a continuous phase.
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Miller John D. (Ithaca NY) Stoyell Richard C. (Moravia NY) Connors ; Jr. James T. (Groton NY), Filter and filtration method.
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Edwin A. Castellanos ; Gary L. Rickle, Filter assembly having plastic mesh conductive surround.
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Shane Bruce E., Filter cartridge with structurally attached outer sleeve and method of assembly.
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Kahlbaugh Brad ; Dudrey Denis J., Filter material construction and method.
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Stoyell Richard C. (Moravia NY) Williamson Kenneth M. (Jamesville NY) Hopkins Scott D. (Dryden NY) Geibel Stephen A. (Cortland NY) Wolff Terry L. (Marathon NY), Filter with over-laid pleats in intimate contact.
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Barry M. Verdegan ; Brian W. Schwandt ; Daniel R. Cady ; Gene A. Mullins ; W. Lee Currier, Filter with preferential fluid affinity.
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Choi Kyung-Ju (Jefferson KY), High capacity filter media.
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Ganzi Gary C. (Lexington MA) Paul Charles T. (Westford MA), Method and structure for sealing tubular filter elments.
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Wylie Douglas H.,CAX ; Szabo John,CAX ; Ravindran Saj,CAX, Method of fabricating adhesively secured frame assembly.
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Miyagi Tokuya (Osaka JPX) Inoue Akihisa (Hirakata JPX) Hamada Katushi (Neyagawa JPX) Fujimori Shoichi (Neyagawa JPX) Hori Yoshihiro (Shimizu JPX), Method of producing a fluorocarbon filter element.
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Stoyell Richard C. (Moravia NY) Williamson Kenneth M. (Jamesville NY) Hopkins Scott D. (Dryden NY) Geibel Stephen A. (Cortland NY) Wolff Terry L. (Marathon NY), Methods of assembling a filter.
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Durre Reynold F. ; Buchberger Laurie A. ; Brace Greg, Pleated filter and support tube therefor.
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Brownell Peter (Providence RI), Pleated filter element and integral shield and method for making same.
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Kersting Darrel (Black River Falls WI), Pleated filter element having improved side seam seal.
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Friedmann Francis A. ; Wagner Wayne M. ; Risch Daniel T., Pleated filter having a planar sheet of randomly arranged filaments to maintain pleat spacing.
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Briggs Southwick W. (6420 Western Ave. Chevy Chase MD 20015) Brazerol William A. (2115 31st Place ; SE. Washington DC 20020), Pleated paper filter.
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Gnamm Bernhard (Charleston SC) Bareiss Alexander (Charleston SC), Tubular elastic frame with a continuous slot spanned by a filter material.
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Miller John D. (Ithaca NY) Williamson Kenneth M. (LaFayette NY) Swiezbin Joseph R. (Glen Head NY), Two pleated filter composite having cushioning layers.
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이 특허를 인용한 특허 (10) 인용/피인용 타임라인 분석

Rocklitz, Gary J.; Rogers, Robert M.; Ouyang, Ming; Mathew, Anitha, Air filtration media pack, filter element, air filtration media, and methods.
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Chen, Ruijun; Martin, William J., Apparatus and method for removing contaminants from industrial fluids.
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Kreibig, Micha, Filter element having at least one mat-type or sheet-type filter web.
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Rocklitz, Gary J.; Rogers, Robert M.; Adamek, Daniel E.; Ouyang, Ming; Mathew, Anitha, Filtration media pack, filter element, and methods.
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Andersen, Charles; Wolbert, Edward; Hawkins, Nicholas, High capacity suction strainer for an emergency core cooling system in a nuclear power plant.
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Moe, Ted A.; Fesenmaier, Gregory J.; Rocklitz, Gary J.; Ouyang, Ming; Mathew, Anitha M., Method and apparatus for forming fluted filtration media.
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Rocklitz, Gary J., Pleated filtration media having tapered flutes.
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Rocklitz, Gary J., Pleated filtration media, media packs, filter elements, and methods for filtering fluids.
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Rocklitz, Gary J., Pleated filtration media, media packs, filter elements, and methods for filtering fluids.
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Zur, Boaz; Nuriel, Shahar; Shtekelmacher, Ruven; Sabag, Yitzhak; Kotler, Ami; Shraer, Simeon; Shamir, Yuval, Screen-type filter element including filter assembly with fine and coarse mesh screen sheet material layers selectively penetrated by integrally attached plastic enveloping ribs.
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A	생활필수품
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A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Filter element and method of making 원문보기