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특허 상세정보

Valve stem gas leak detector

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16L-055/168    G01W-001/11    F16K-041/04   
미국특허분류(USC) 73/46 ; ; 73/405 ; R ; ; 73/33505 ; 324/691
출원번호 US-0465819 (1995-06-06)
발명자 / 주소
인용정보 피인용 횟수 : 20  인용 특허 : 16
초록

A valve stem gas leak sensor or detector configured to surround a possibly leaking petrochemical or like flow line valve stem and provide for external monitoring equipment an electrical resistance related to the amount of hydrocarbon gas leakage occurring around the valve stem. Such a gas leak detector, termable a ring sensor, is configured as a stem surrounding enclosure, with interconnecting segments for ease of installation around and removability from a valve stem, with one or both of each such segments having an interiorly arranged layer of gas sens...

대표
청구항

A valve stem gas leak sensor comprising a generally cylindrical enclosure closely surrounding the valve stem of a possibly leaking petroleum flow line valve, said cylindrical enclosure being situated adjacent the valve packing gland and being interiorly open around said valve stem, a hydrocarbon gas sensing material layer on the interior surface of said enclosure, and electrical conductor means electrically connected to said hydrocarbon gas sensing material with portions of said conductor means exposed exteriorly of said enclosure so as to be contactable...

이 특허에 인용된 특허 (16)

  1. Dolan James P. (Seattle WA). Apparatus and method for detecting substances and for regulating current. USP1980124237721.
  2. Miller Darwin L. (Houma LA) Miller Ronnie F. (Houma LA). Apparatus for leak testing of pipe. USP1985054517828.
  3. Fukui Kiyoshi (Osaka JPX). Gas sensor used in leak detectors or alarm units. USP1995105457333.
  4. Mori Keijiro (Kanagawa JPX) Yagi Hideaki (Kasugai JPX) Shimano Ichiro (Kanagawa JPX) Onouchi Tooru (Naka JPX). Humidity sensor. USP1988044737707.
  5. Moriya Yoshio (Atsugi JPX) Kojima Ryuji (Tokyo JPX) Nagano Kentaro (Yokohama JPX) Ishikura Kazuhiro (Hiratsuka JPX) Imai Yasuo (Yokohama JPX) Matsushima Yasunobu (Kawasaki JPX). Humidity sensor. USP1991075028906.
  6. Pillette Kibbie P. (P.O. Box 456 Abbeville LA 70510). Leak detection system. USP1984084466273.
  7. Beckinghausen ; Jr. Erwin S. (East Amherst NY) Pritchard Francis E. (Buffalo NY). Leakage measurement into a gas-charged collapsible container. USP1994055309752.
  8. Miller Ronnie F. (Houma LA) Dwyer Arthur L. (Houma LA) Miller Darwin A. (Houma LA) Miller Darwin L. (Houma LA). Method and apparatus for leak testing of pipe. USP1988034727749.
  9. Tanaka Satoru C. (Milpitas CA). Methods and apparatus for compensating for charge transfer inefficiency in imaging and other variable length charge tran. USP1980094224585.
  10. Oka Shotaro (Muko JPX) Tahara Shu (Nagaokakyo JPX) Kobayashi Junya (Kyoto JPX). Moisture sensor and a process for the production thereof. USP1986014562725.
  11. Shakkottai Parthasarathy (2622 Gardi St. Duarte CA 91010) Lawson Daniel D. (5542 Halifax Rd. Arcadia CA 91006) Venkateshan Shakkottai P. (Gandhi Nagar ; Adyar Madras 600020 INX). Polymer hygrometer for harsh environments. USP1990044915816.
  12. Eugene Michel (Colomiers FRX) Rodriguez Jean-Claude (Toulouse FRX) Debons Ren (Aussonne. all of FRX). Sealed drainage unit for a hydraulic circuit. USP1994095348044.
  13. Lahlouh John (San Jose CA) Stewart Ray F. (Redwood City CA) Wasley Robert S. (San Carlos CA) Hauptly Paul D. (Fremont CA) Welsh Laurence M. (Palo Alto CA). Sensors for detecting and locating fluids. USP1992045101657.
  14. Ezekoye Levi I. (Wilkinsburg PA). Valve packing leakage monitoring device. USP1986034573344.
  15. Covert Douglas A. (Painesville OH) Williams Peter C. (Cleveland Hts. OH). Valve stem packing system. USP1993115263682.
  16. Ruesch J. O. (Fabrikweg CH-8634 Hombrechtikon CHX). Valve stem seal leak protection and detection apparatus. USP1990114972867.

이 특허를 인용한 특허 피인용횟수: 20

  1. Lavoie,횋ric. Apparatus for moving a measuring device along a pipe. USP2007107284456.
  2. Aikens, John. Device and system for corrosion detection. USP2009067552643.
  3. Nanaji Seifollah S.. Hydrocarbon vapor sensing. USP2000086102085.
  4. Ware, Donald D.; Tom, Glenn M.; Dathe, Paul; Koland, Amy; Gerold, Jason; Mikkelsen, Kirk; O'Dougherty, Kevin T.; Cisewski, Michael A.. Liquid dispensing systems encompassing gas removal. USP2012128336734.
  5. Ware, Donald D.; Tom, Glenn M.; Dathe, Paul; Koland, Amy; Gerold, Jason; Mikkelsen, Kirk; O'Dougherty, Kevin T.; Cisewski, Michael A.. Liquid dispensing systems encompassing gas removal. USP2015099120616.
  6. O'Dougherty, Kevin T.; Andrews, Robert. Liquid handling system with electronic information storage. USP2010027664568.
  7. O'Dougherty, Kevin T.; Andrews, Robert E. Liquid handling system with electronic information storage. USP2010067747344.
  8. O'Dougherty, Kevin T.; Andrews, Robert E.. Liquid handling system with electronic information storage. USP2005046879876.
  9. O'Dougherty, Kevin T.; Andrews, Robert E.; Jayaraman, Tripunithura V.; Menning, Joe; Baye-Wallace, Christopher A.. Liquid handling system with electronic information storage. USP2014098849448.
  10. O'Dougherty, Kevin T.; Andrews, Robert E.; Jayaraman, Tripunithura V.; Menning, Joe; Baye-Wallace, Christopher A.. Liquid handling system with electronic information storage. USP2012048150549.
  11. O'Dougherty, Kevin T.; Andrews, Robert E.; Jayaraman, Tripunithura V.; Menning, Joseph P.; Baye, Christopher A.. Liquid handling system with electronic information storage. USP2017049618942.
  12. McCoy,Fred Grant; Fazekas,Jonathan Mark; Borntrager,Ryan R.. Method and apparatus for detecting a gas. USP2006057051578.
  13. McCoy, Fred Grant; Fazekas, Jonathan Mark; Borntrager, Ryan R.. Method and apparatus for detecting leaks. USP2005016840086.
  14. McCoy, Fred Grant; Fazekas, Jonathan Mark; Borntrager, Ryan R.. Method and apparatus for detecting leaks. USP2005036860140.
  15. McCoy, Fred Grant; Fazekas, Jonathan Mark; Borntrager, Ryan R.. Method and apparatus for detecting leaks. USP2005036860141.
  16. McCoy,Fred Grant; Fazekas,Jonathan Mark; Borntrager,Ryan R.. Method and apparatus for detecting leaks. USP2007027178385.
  17. O'Dougherty, Kevin T.; Andrews, Robert E.; Jayaraman, Tripunithura V.; Menning, Joseph P.; Baye-Wallace, Christopher A.. Secure reader system. USP2010047702418.
  18. James P. Dolan ; Patrick M. Dolan. Sensor having improved desorption times and related control circuitry. USP2002086433694.
  19. Elfstrom, Scott; Hanson, Kathleen L.; Haumersen, Steven E.; Johnson, Thomas D.; Nolet, Clari; Smeaton, William. Systems and methods for managing material storage vessels having information storage elements. USP20181110127094.
  20. Elfstrom, Scott; Hanson, Kathleen L.; Haumersen, Steven E.; Johnson, Thomas D.; Nolet, Clari; Smeaton, William. Systems and methods for managing material storage vessels having information storage elements. USP2015059031683.