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특허 상세정보

Diffusion-type gas sample chamber

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G01N-021/61   
미국특허분류(USC) 250/343 ; 250/3385 ; 356/437
출원번호 US-0915003 (1992-07-16)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 26  인용 특허 : 0
초록

The improved sample chamber includes an elongated hollow tube closed at one end and having specularly-reflective inwardly facing surfaces. A source of radiation and a detector of radiation are mounted side by side in the open end of the hollow tube, both facing the closed end. A plurality of filtering apertures are formed in the tube, and each aperture is covered by a sheet of a semipermeable membrane that serves to prevent airborne particles larger than a predetermined size from entering the chamber while not interfering with the free diffusion of the g...

대표
청구항

An improved diffusion-type gas sample chamber for transmitting radiation through gases present in the chamber by ambient pressure diffusion, comprising in combination a) an elongated hollow tube having an inner wall and having a closed end and an open end, composed of a gastight material and having a specularly-reflective surface on the inner wall and on the inwardly-facing side of the closed end; b) said tube including a plurality of filtering apertures arrayed along said tube for improving the diffusion into and out of the space within said tube; c) a ...

이 특허를 인용한 특허 피인용횟수: 26

  1. Wong, Jacob Y. Absorption biased NDIR gas sensing methodology. USP2012038143581.
  2. Wong,Jacob Y.. Apparatus and method for controlling a fan, cooling unit and a fresh air damper of an air conditioner through use of a Capno-Switch. USP2007107284382.
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  5. Lecomte, Steve; Haesler, Jacques. Device for an atomic clock. USP2014088816783.
  6. Lecomte, Steve; Haesler, Jacques. Device for an atomic clock. USP2014088816779.
  7. Aucremanne Cecile (Maysel FRX). Device for detecting gas by infrared absorption. USP1997035608219.
  8. Andrian I. Kouznetsov. Diffusion-type NDIR gas analyzer with improved response time due to convection flow. USP2002066410918.
  9. Kouznetsov Andrian. Diffusion-type NDIR gas analyzer with improved response time due to convection flow. USP2001076255653.
  10. Rich David R. (Glastonbury CT) Apperson Gerald R. (Seattle WA) Labuda Lawrence L. (Issaquah WA) Mace Leslie E. (Mercer Island WA). Gas analyzer cuvettes. USP1997045616923.
  11. Bender Gerald M. ; Shawgo Loyal B.. Gas concentration monitoring system. USP2001016181426.
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  14. Martin Hans Goran Evald,SEX. Gas sensor. USP2000016016203.
  15. Stuttard, David Michael. Gas sensor. USP2004066753967.
  16. Gibson, Desmond Robert; MacGregor, Calum John; Waddell, Ewan MacKinnon. Gas sensor with radiation guide. USP2015059035256.
  17. Wong Jacob Y.. Method for dynamically adjusting criteria for detecting fire through smoke concentration. USP2000086107925.
  18. Fischer, Joerg; Forlenza, Marco; Frodl, Robert; Minuth, Rudi; Straub, Kuno; Tille, Thomas. Method for reducing condensation water in gas sensor arrangements. USP2009127626168.
  19. Bonne Ulrich ; Cole Barrett E. ; Higashi Robert E.. Micromachined integrated opto-flow gas/liquid sensor. USP1999035886249.
  20. Riley, Jr.,William J.; Lutwak,Robert. Miniature gas cell with folded optics. USP2006067064835.
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  23. Morin, Nathalie; Bernascolle, Philippe; Fervel, Franck; Druart, Guillaume. Optical filtering device for detecting gas. USP20180810060848.
  24. Wong Jacob Y. (Goleta CA). Passive infrared analysis gas sensor. USP1997075650624.
  25. Wong, Jacob Y.. Re-calibration methodology for NDIR gas sensors. USP2012058178832.
  26. Waller Michael V. ; Arsenault Kenneth. Spectral analyzer. USP1999105969811.