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Gas-permeable, liquid-impermeable vent cover 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • B01D-019/00
출원번호 US-0340912 (1994-11-17)
발명자 / 주소
  • DeGuiseppi David T. (Chadds Ford PA)
출원인 / 주소
  • W. L. Gore & Associates, Inc. (Newark DE 02)
인용정보 피인용 횟수 : 91  인용 특허 : 0

초록 ▼

A flexible, insertable vent cover is formed from a flexible, resilient material. The cover has a through passageway; a gas-permeable, liquid-impermeable membrane traversing the passageway; a diaphragm valve covering the membrane; and an annular securing ring that maintains the valve in a protective

대표청구항 ▼

A vent cover comprising: (a) a main body portion having a gas-permeable, aqueous liquid impermeable membrane with a cross-sectional flow-through area, wherein said main body portion has upper and lower ends, said upper end having a diameter larger than a diameter of said lower end and said lower end

이 특허를 인용한 특허 (91)

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