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특허 상세정보

Slow close hydrant check valve

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) E03B-009/04    F16K-017/36    F16K-037/00   
미국특허분류(USC) 137/68.1 ; 137/285 ; 137/551 ; 251/50 ; 285/3
출원번호 US-0795926 (1977-05-11)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Flehr, Hohbach, Test, Albritton & Herbert
인용정보 피인용 횟수 : 18  인용 특허 : 0
초록

A wet barrel hydrant check valve has a body containing a dash-pot assembly connected to a flapper valve, spring biased towards the closed condition. A sandwich flange fixed to the hydrant has a member holding the flapper out of the flow passageway, the flange being joined in a break-away connection to the valve body so that upon hydrant upset, as by vehicle impact, the hydrant and holding member are dismounted from the valve body, releasing the flapper into the flow path of escaping water for dash-pot controlled, gradual closure of the valve minimizing w...

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이 특허를 인용한 특허 피인용횟수: 18

  1. Snider James A. (579 Flores Ct. Fairfield CA 94533). Apparatus for controlling hydraulic flow of liquid under pressure in a pipeline. USP1986064596263.
  2. Wood, Graham P.. Automatic shut-off valve with closure rate control. USP2016059334976.
  3. King Frank E. (5 Faraday Rd. Peterlee ; Co. Durham GBX) Lang Reginald W. (34 Sandholme Dr. Burkley-in-Wharfedale ; Ilkley ; West Yorkshire GBX). Break-away coupling for hoselines. USP1990054921000.
  4. Thomson John G. (Sherwood GB2). Breakaway coupling. USP1982044326555.
  5. Flory John F. (Morris Township ; Morris County NJ). Breakaway pipe coupling with automatically closed valves. USP1982114361165.
  6. Flory John F. (Morris Township ; Morris County NJ) Woehleke Steven P. (Convent Station NJ). Breakaway pipe coupling with automatically closed valves. USP1982094351351.
  7. McFarlane, Glenton P.; Swift, Steven G.. Bursting disc orientation device. USP1985114550743.
  8. Bormioli, Lorenzo. Device for automatic closure of control valves in separable connection units for flexible pipes. USP2015038991782.
  9. Mathes, Rainer; Dauvillier, Olivier; Dulac, Eric; Bouille, André ; Savry, Christian. Device for fixing a vacuum pump. USP2011098016512.
  10. Luppino, Francesco. Fire hydrant break off valve. USP2015038991415.
  11. Long,Michael Anthony; Cvetko,Jonatan. Flange valve. USP2007077240378.
  12. Freudendahl,Erling A.. Hydrant knock-off combination flow stop and backflow check valve. USP2007017156119.
  13. Kitchen, Richard T.; Traver, Richard D.. Hydrant shear valve and method. USP2018029890866.
  14. Huang, Jing; Luo, Jianqun; Gui, Xinchun; Tang, Aihua; Yin, Jianguo; Dong, Zhen. Tilting disc check valve. USP20181010107405.
  15. Holland,Darryll Arthur Douglas; Montgomery,Sean Kellie. Vented port-cap for fire hydrant. USP2007107278442.
  16. Fleury, Jr., Leo W.; McCreary, John C.. Wet barrel fire hydrant flow preventer. USP2009047516751.
  17. Fleury, Jr.,Leo W.; McCreary,John C.. Wet barrel fire hydrant flow preventer. USP2007097267136.
  18. Fleury, Jr.,Leo W.; McCreary,John C.. Wet barrel fire hydrant flow preventer. USP2006107128083.