[특허]Gravity filter

Gravity filter 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C02F-001/42 B01D-039/20 B01D-024/22 B01D-039/16 B01J-020/28 C02F-001/28 B01D-027/02 C02F-001/00 C02F-101/20
출원번호	US-0716614 (2012-12-17)
등록번호	US-9994461 (2018-06-12)
발명자 / 주소	Mitchell, Michael Donovan
출원인 / 주소	HELEN OF TROY LIMITED
대리인 / 주소	Ulmer & Berne LLP
인용정보	피인용 횟수 : 0 인용 특허 : 50

초록 ▼

Embodiments of a gravity filter for potable water comprise a loose filter bed comprising ion exchange resin particles and activated carbon particles, and a porous non-woven filter substrate disposed downstream of the loose filter bed, wherein the porous non-woven filter substrate comprises an impreg

대표청구항 ▼

1. A gravity filter comprising: a loose filter bed comprising an ion exchange resin and activated carbon; anda porous non-woven filter substrate disposed downstream of the loose filter bed, the porous non-woven filter substrate comprising a fibrous material impregnated with heavy metal scavenger particles and further comprising an average pore size of from about 5 μm to about 15 μm; andwherein the heavy metal scavenger particles consist of one or more of amorphous titanium silicate, a zirconium oxide, and a zirconium hydroxide, and the fibrous materials consists of one or more of polyolefin fibers, polyester fibers, glass fibers, and cellulose fibers. 2. The filter of claim 1 wherein the ion exchange resin is a weak acid cationic exchange resin, a strong cation exchange resin, or combinations thereof. 3. The filter of claim 1 wherein the ion exchange resin is a copolymer of acrylic acid. 4. The filter of claim 1 wherein the ion exchange resin is a sulfonic acid resin. 5. The filter of claim 1 wherein the fibrous material is further impregnated with activated carbon. 6. The filter of claim 1 wherein the porous non-woven filter substrate comprises a binder. 7. The filter of claim 6, wherein the binder comprises a hydrophobic binder, a hydrophilic binder, or combinations thereof. 8. The filter of claim 1 wherein the heavy metal scavenger particles are amorphous titanium silicate. 9. The filter of claim 8, wherein the porous non-woven substrate comprises from about 18 to about 30% by weight of the amorphous titanium silicate. 10. The filter of claim 1 wherein the fibrous material consists of cellulose fibers and glass fibers and optionally one or more of polyolefin fibers and polyester fibers. 11. The filter of claim 1 wherein the loose bed comprises about 20 to about 70% by weight of the ion exchange resin. 12. The filter of claim 1 wherein the loose bed comprises about 30 to about 70% by weight of the activated carbon. 13. The filter of claim 1, further comprising a scrim layer positioned above the loose filter bed. 14. A gravity filter comprising: a filter housing;a loose filter bed disposed in the filter housing and comprising a weak acid ion exchange resin and activated carbon; anda porous nonwoven filter substrate disposed downstream of the loose filter bed inside the filter housing, wherein the porous nonwoven filter substrate comprises glass fibers impregnated with amorphous titanium silicate particles and further comprising an average pore size of from about 5 μm to about 15 μm. 15. The filter of claim 14 further comprising a scrim layer above the loose filter bed. 16. The filter of claim 14 wherein the porous non-woven filter substrate comprises a binder. 17. The filter of claim 16 wherein the binder comprises a hydrophobic binder, a hydrophilic binder, or combinations thereof. 18. The filter of claim 14 wherein the porous non-woven substrate further comprises cellulose fibers. 19. The filter of claim 14 wherein the porous non-woven substrate comprises from about 18 to about 30 percent by weight of the amorphous titanium silicate. 20. The filter of claim 14 wherein the porous non-woven substrate comprises an average pore size of from about 3 nm to about 14 nm. 21. The filter of claim 14 wherein the porous non-woven substrate comprises an average pore size of from about 5 nm to about 7 nm. 22. The filter of claim 14 wherein the loose bed comprises about 20 to about 70% by weight of the ion exchange resin. 23. The filter of claim 14 wherein the loose bed comprises about 30 to about 70% by weight of the activated carbon.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
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

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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