[특허]Dual check valve

[미국특허] Dual check valve 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-034/08
출원번호	US-0615068 (2009-11-09)
등록번호	US-8668015 (2014-03-11)
우선권정보	CA-2540499 (2006-03-17)
발명자 / 주소	Leeb, Gerald
출원인 / 주소	Leeb, Gerald
대리인 / 주소	Pedersen and Company, PLLC
인용정보	피인용 횟수 : 0 인용 특허 : 33

초록 ▼

A check valve comprising a section of a drill string, a flapper valve positioned within and concentric to the section of the drill string, and a piston valve positioned within and concentric to the section of the drill string. The flapper valve allows fluid flow in a first direction through an inner portion of a cross-section of the section of the drill string and not allowing fluid flow in a second direction, and the piston check valve allowing fluid flow in the first direction through an outer portion of the cross-section of the section of the drill string and not allowing fluid flow in the second direction, where the first portion and the second portion of the cross-section of the section of the drill string are mutually exclusive.

대표청구항 ▼

1. A valve for use in a drill string, the valve comprising: a housing having an inner wall;a sleeve disposed within the housing with a gap between the inner wall and the sleeve, the gap having a width;a first check valve positioned within the housing, the first check valve including a piston, the piston being axially movable between an open position in which the piston is outside the gap and a closed position in which a portion of the piston extends into the gap, the piston being biased to the closed position;in which the piston includes an annular shoulder facing towards the sleeve, and in which, in the closed position, with the portion of the piston extending into the gap, the shoulder on the piston abuts against the sleeve outside of the gap;the portion of the piston that extends into the gap having parallel sides and extending across the width of the gap in the closed position, and the parallel sides terminating in a tapered surface, the tapered surface in operation of the valve, redirecting abrasive flows in the gap when the first check valve is in the open position;a second check valve positioned within the sleeve, the second check valve being positioned in parallel to the first check valve;in which the first check valve and the second check valve are oriented to block flow in opposite directions; andin which the fluid flowing through the valve is contained entirely within the housing. 2. The valve of claim 1, wherein the second check valve is a ball valve. 3. The valve of claim 1 in which the first check valve and the second check valve are each positioned concentric to the housing. 4. A valve set comprising more than one valve according to claim 1 positioned within the housing, each valve comprising the first check valve and the second check valve, each valve being in parallel to each other valve in the valve set. 5. The valve of claim 1, wherein the piston is biased closed by a spring. 6. The valve of claim 1 in which the sleeve is threaded to the inner wall of the housing. 7. The valve of claim 1 in combination with a drill string in which the valve is inserted.

이 특허에 인용된 특허 (33) 인용/피인용 타임라인 분석

Barrington Burchus Q. (Duncan OK), Annulus pressure operated closure valve with improved power mandrel.
상세보기
Barrington Burchus Q. (Duncan OK), Annulus pressure operated closure valve with reverse circulation valve.
상세보기
Brown ; deceased Cicero C. (late of Houston TX BY Joe R. Brown ; executor), Check valve assembly.
상세보기
Yamada Yutaka (42 ; 2-chome ; Komenoza-cho Tsushima-shi ; Aichi-ken JPX), Check valve assembly for pipeline system.
상세보기
Hushbeck Donald F. (Duncan OK), Circulation valve.
상세보기
Hushbeck Donald F. (Duncan OK), Circulation valve.
상세보기
Gullett Paul D. M. (Grantham GBX), Control of ‘U’tubing in the flow of cement in oil well casings.
상세보기
Hauck Emil ; Baski Henry A., Downhole flow and pressure control valve for wells.
상세보기
Szarka, David D., Fill up tool and mud saver for top drives.
상세보기
Piper Britton F. (Edmond OK), Flow control valve.
상세보기
Viebahn, Reiner; Adams, Christoph, Fuel tank.
상세보기
Hadsell William R. (Los Angeles CA) Miyagishima Tosh (Los Angeles CA), Internal mud saver valve.
상세보기
Giebeler Bernhardt F. (San Bernardino CA), Kelly valve.
상세보기
Ito,Nobuo, Leak-detecting check valve, and leak-detection alarm system that uses said check valve.
상세보기
Pringle, Ronald E.; Morris, Arthur J., Method and apparatus for selective injection or flow control with through-tubing operation capacity.
상세보기
Cunningham Christopher E. ; Beitler Bradley D., Monobore completion/intervention riser system.
상세보기
Parker ; Bill B. ; Beynand ; Rudy ; Cormier ; Arthur J., Mud retaining valve.
상세보기
Majkovic Davor,CAX, Mud saver kelly valve.
상세보기
Majkovic, Davor, Mud saver kelly valve.
상세보기
Baugh Benton F. (14626 Oak Bend Houston TX 77079), Mud saver valve.
상세보기
Baugh Benton F. (Houston TX), Mud saver valve.
상세보기
Claycomb Jackson R. (8215 Debbie Gay Houston ; Harris County TX 77040), Mud saver valve.
상세보기
Williamson Joseph Stephen (Houston TX), Mud saver valve.
상세보기
Bailey Thomas F. (Houston TX) Todd ; Jr. Raymond A. (Houston TX), Mud saver valve with increased flow check valve.
상세보기
Bailey Thomas F. (Houston TX) Todd ; Jr. Raymond A. (Houston TX), Mud saver valve with replaceable inner sleeve.
상세보기
Burge Edward V. (2620 Durgan Houston TX 77043), Mud valve.
상세보기
Russell, Larry R., Mudsaver valve with dual snap action.
상세보기
Piper Britton F. (Edmond OK), Pressurized check valve.
상세보기
Evans ; Robert T. ; Farley ; David L., Reclosable circulation valve for use in oil well testing.
상세보기
Leeb Rodney,CAX ; Leeb Gerald,CAX, Reverse circulating control valve.
상세보기
Christensen Jon B. (Duncan OK), String bypass.
상세보기
Head Philip (London GBX) Gullett Paul (Woolsthorpe-by-Colsterworth GBX) Wilmott Paul (London GBX), System for controlling the flow of fluid in an oil well.
상세보기
Calhoun Michael B. (Carrollton TX) Holland ; Jr. Robert L. (Ventura CA) Scott Paul D. (Carrollton TX), Well safety valve.
상세보기

활용도 분석정보

상세보기

다운로드

내보내기

활용도 Top5 특허

해당 특허가 속한 카테고리에서 활용도가 높은 상위 5개 콘텐츠를 보여줍니다.
더보기 버튼을 클릭하시면 더 많은 관련자료를 살펴볼 수 있습니다.

내보내기 메뉴

내보내기 구분

파일저장
인쇄
메일전송

구성항목

기본정보
상세정보

관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC

저장형식

Text(ASCII format)
Excel format
PIAS분석(.xls)

메일정보

받는사람 (필수): @
보내는사람 (선택): @
제목
내용: KISTI 검색결과 이메일 서비스

안내

총 건의 자료가 검색되었습니다.

다운받으실 자료의 인덱스를 입력하세요. (1-10,000)

검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다.

데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요)

다운로드 파일은 UTF-8 형태로 저장됩니다.
파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오.

Text(ASCII format)
Excel format

AI-Helper ※ AI-Helper는 을 사용합니다.

AI-Helper

안녕하세요, AI-Helper입니다. 좌측 "선택된 텍스트"에서 텍스트를 선택하여 요약, 번역, 용어설명을 실행하세요.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.

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

연합인증

[미국특허] Dual check valve 원문보기