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Flapper valve

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) E21B-034/00    E21B-034/06   
출원번호 US-0661702 (2015-03-18)
등록번호 US-9745822 (2017-08-29)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Cantor Colburn LLP
인용정보 피인용 횟수 : 0  인용 특허 : 12
초록
▼

A flapper valve includes a valve body having a hinge member. A flapper is pivotally mounted to the valve body through the hinge member. At least one of the valve body and the flapper includes a multi-stage valve seat. The multi-stage valve seat includes a first sealing zone and a second sealing zone that is distinct from the first sealing zone. The first sealing zone is configured to provide pressure containment at the valve body when the flapper is exposed to a first pressure and the second sealing zone is configured to provide pressure containment at t...

대표
청구항
▼

1. A flapper valve comprising: a valve body including a hinge member; anda flapper pivotally mounted to the valve body through the hinge member, wherein the valve body includes a one-piece multi-stage valve seat integrally formed with the valve body, the one-piece multi-stage valve seat including a first sealing zone and a second sealing zone that is distinct from the first sealing zone, the first sealing zone being cantilevered from the second sealing zone and configured to provide pressure containment at the valve body when the flapper is exposed to a ...

이 특허에 인용된 특허 (12)

  1. Miller, Wade A.; Dyer, Robert J.; Hair, Michael L.; Myerley, Thomas S.; Medill, Leonard D.; Presley, Matthew P.. Alignment system for flapper valve. USP2014108863767.
  2. Teumer Henry E. (5308 Woodline Dr. South Mobile AL 36609). Check valve. USP1986084605041.
  3. Pringle Ronald E. ; Milligan ; Jr. Clay W. ; Read Dennis M.. Downhole valve. USP2001126328109.
  4. Haynes, Andrew. Downhole valve and method of making. USP2009107604056.
  5. Davis Jonathan P. (Houston TX). Dual metal seal for a well safety valve. USP1986044583596.
  6. Stffler Albert (Dsseldorf/Benrath DEX) Mehl Dietholf (Dsseldorf DEX) Eckers Lorenz (Mnchengladbach DEX). Flap valve for a dispenser. USP1988094771925.
  7. Macrae, Jonathan; Finci, Bulent; Pedraza, Jaime; Schiel, Mark; Porter, Robert Crispin. Flapper valve. USP2013128607876.
  8. Svendsen, Darrel J.; Daniels, Kenneth. Flapper valve system. USP2004086782916.
  9. Guess Edward L. (Tulsa OK). Sealing system for downhole well valves. USP1987064674575.
  10. Anderson,Robert J.; Wagner,Nathaniel H.; Smith,Roddie R.; Hanton,John. Subsurface safety valve. USP2007027178599.
  11. Echols ; III Ralph H. (Carrollton TX) Pearce Joseph L. (Dallas TX) Patterson Daniel L. (Brunei Darussalam MYX). System containing expendible isolation valve with frangible sealing member, seat arrangement and method for use. USP1993025188182.
  12. Davis Glenn Ray ; Dennistoun Stuart Morton. Valve with secondary load bearing surface. USP2001076263910.

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