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특허 상세정보

Fluid leakage detecting apparatus

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G08B-021/00   
미국특허분류(USC) 340/605 ; 73/204
출원번호 US-0396378 (1982-07-08)
우선권정보 JP-0106988 (1981-07-10)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 31  인용 특허 : 2
초록

An apparatus for detecting leakage of fluid comprises a bridge circuit composed of a heat generating resistance element connected in one arm and installed at a location where leakage of fluid may possibly occur and other resistor elements inserted in other arms, respectively, an input power supply source connected to the input of the bridge circuit and a differential amplifier connected to the output of the bridge circuit for amplifying an unbalance voltage produced by the bridge circuit, wherein the resistor elements inserted in the other arms of the br...

대표
청구항

An apparatus for detecting leakage of a fluid, comprising: a bridge circuit composed of a heat generating resistance element connected in one arm of said bridge circuit and installed at a location where leakage of fluid may possibly occur and other resistor elements inserted in other arms of said bridge circuit, respectively; an input power supply source connected to the input of said bridge circuit for supplying an exciting current to said bridge circuit so that said heat generating resistance element is sufficiently heated when no leakage of the fluid ...

이 특허를 인용한 특허 피인용횟수: 31

  1. Frawley James J. (Honeoye Falls NY) Mearns Richard L. (Pittsford NY). Apparatus and method for sensing diaphragm failures in reciprocating pumps. USP1988114781535.
  2. Terentiev, Alexandre N.. Apparatus and methods for leak detection in bioprocessing bags. USP2012018104328.
  3. Kong,Peter C.. Chemical reactor and method for chemically converting a first material into a second material. USP2008047354561.
  4. Kong, Peter C.. Chemical reactor for converting a first material into a second material. USP2012108287814.
  5. Burghoff Heinz-Georg (Reichenbach DEX) Daub Werner (Stuttgart DEX). Circuit arrangement for the electro-thermal measurement of the filling level in the tank of a motor vehicle. USP1988014718466.
  6. Kong, Peter C.. Combustion flame-plasma hybrid reactor systems, and chemical reactant sources. USP2013118591821.
  7. Lawson William J. (P.O. Box 711 Poteet TX 78065). Fluid leak detector. USP1997065637789.
  8. McCoy,Fred Grant; Fazekas,Jonathan Mark; Borntrager,Ryan R.. Method and apparatus for detecting a gas. USP2006057051578.
  9. McCoy, Fred Grant; Fazekas, Jonathan Mark; Borntrager, Ryan R.. Method and apparatus for detecting leaks. USP2005016840086.
  10. McCoy, Fred Grant; Fazekas, Jonathan Mark; Borntrager, Ryan R.. Method and apparatus for detecting leaks. USP2005036860140.
  11. McCoy, Fred Grant; Fazekas, Jonathan Mark; Borntrager, Ryan R.. Method and apparatus for detecting leaks. USP2005036860141.
  12. McCoy,Fred Grant; Fazekas,Jonathan Mark; Borntrager,Ryan R.. Method and apparatus for detecting leaks. USP2007027178385.
  13. Richardson,John G.. Method and apparatus for identifying, locating and quantifying physical phenomena and structure including same. USP2006016988415.
  14. Richardson,John G.. Method and system for pipeline communication. USP2008017324011.
  15. Lehmann, Martin. Method for leak testing and leak testing apparatus. USP2015079091612.
  16. Lehmann, Martin. Method for leak testing and leak testing apparatus. USP2013068459099.
  17. Lehmann Martin,CHX. Method for tightness testing of closed containers, test chamber, test system, and tester therefor. USP2001026185987.
  18. Lehmann Martin,CHX. Method for tightness testing of closed vessels, test chamber tester and testing system therefor. USP1999105962776.
  19. Moore,Karen A.; Zatorski,Raymond A.. Methods for coating conduit interior surfaces utilizing a thermal spray gun with extension arm. USP2007107276264.
  20. Richardson, John G.; Moore, Karen A.; Carrington, Robert A.. Network and topology for identifying, locating and quantifying physical phenomena, systems and methods for employing same. USP2005056889557.
  21. Trescott, Robert. Non-invasive thermal dispersion flow meter with chronometric monitor for fluid leak detection. USP2015099146172.
  22. Trescott, Robert. Non-invasive thermal dispersion flow meter with chronometric monitor for fluid leak detection. USP2016069371632.
  23. Trescott, Robert; Shaw, Scott. Non-invasive thermal dispersion flow meter with chronometric monitor for fluid leak detection and freeze burst prevention. USP2017099759632.
  24. Trescott, Robert; Shaw, Scott. Non-invasive thermal dispersion flow meter with fluid leak detection and alert. USP2017019534978.
  25. Trescott, Robert; Shaw, Scott. Non-invasive thermal dispersion flow meter with fluid leak detection and freeze burst prevention. USP20180710036143.
  26. Richardson,John G.; Moore,Karen A.; Carrington,Robert A.. Pipeline including network and topology for identifying, locating and quantifying physical phenomena. USP2006026997062.
  27. Richardson,John G.. Structure for identifying, locating and quantifying physical phenomena. USP2006107124644.
  28. Richardson,John G.; Moore,Karen A.; Carrington,Robert A.. Structures including network and topology for identifying, locating and quantifying physical phenomena. USP2006047032459.
  29. Weseman,Matthew T.; Rohrbaugh,David T.; Richardson,John G.. System, method and computer-readable medium for locating physical phenomena. USP2008027334485.
  30. Moore, Karen A.; Zatorski, Raymond A.. Systems and methods for coating conduit interior surfaces utilizing a thermal spray gun with extension arm. USP2005076916502.
  31. Trescott, Jr.,Robert C.; Collurafici,Frank W.; Collurafici,Frank P.; Shaw,Scott. Thermal dispersion flow meter with chronometric monitor for fluid leak detection. USP2007127308824.