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특허 상세정보

Magnetically coupled safety valve with satellite outer magnets

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16K-031/08   
미국특허분류(USC) 251/065; 166/0665; 335/306
출원번호 US-0618489 (2006-12-29)
등록번호 US8038120 (2011-10-04)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Marlin R., Smith
인용정보 피인용 횟수 : 4  인용 특허 : 51
초록

A magnetically coupled safety valve with satellite outer magnets. A safety valve includes a housing having multiple chambers extending longitudinally in a pressure bearing wall of the housing, and multiple magnetic devices, each of the magnetic devices being reciprocably disposed in a corresponding one of the chambers. Another safety valve includes multiple first magnetic devices, a second magnetic device magnetically coupled to the first magnetic devices, with the first magnetic devices being circumferentially spaced apart and encircling the second magn...

대표
청구항

What is claimed is: 1. A safety valve for use in a subterranean well, the safety valve comprising:a housing surrounding a longitudinal flow passage;multiple longitudinal chambers positioned in a space between an outer perimeter of the flow passage and an exterior of the housing; andmultiple first magnetic devices, each of the first magnetic devices being reciprocably disposed in a corresponding one of the chambers,wherein displacement of the first magnetic device in a first direction permits flow of fluid through the flow passage and displacement of the ...

이 특허에 인용된 특허 (51)

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