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특허 상세정보

Thermal air flow meter

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G01F-001/68   
미국특허분류(USC) 73/204
출원번호 US-0558278 (1983-12-05)
우선권정보 JP-0213869 (1982-12-08)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 12  인용 특허 : 3
초록

A thermal air flow meter consists essentially of a hollow cylindrical support made of an insulating material, a heat-sensitive resistor formed on top of the support, and lead wires inserted into the hollow part of the support from either end and bonded thereto by glass. This flow meter measures the flow rate from changes in the resistance of the heat-sensitive resistor with temperature. The ratio of the inner diameter d2 of the support to the outer diameter d3 of the lead wires (d2/d3) is at least 1.7. This arrangement can provide a thermal air flow mete...

대표
청구항

In a thermal air flow meter which consists essentially of a hollow cylindrical support made of an insulating material, a heat-sensitive resistor formed on top of said support, and lead wires inserted into the hollow part of said support from either end of said support and bonded to said support by a heat-insulating adhesive, and which measures the flow rate on the basis of changes in resistance due to the temperature of said heat-sensitive resistor, the improvement wherein the ratio of the inner diameter d2 of said support to the outer diameter d3 of sai...

이 특허를 인용한 특허 피인용횟수: 12

  1. Kikuchi Toru (Nagoya JPX). Detecting element using an electrically resistive body, for determining a parameter. USP1990024903001.
  2. Ohta Minoru (Okazaki JPX) Miura Kazuhiko (Aichi JPX) Huzino Seizi (Anjo JPX) Kanehara Kenji (Aichi JPX) Hattori Tadashi (Okazaki JPX). Direct-heated flow measuring apparatus having improved response characteristics. USP1989104870860.
  3. Ohta Minoru (Okazaki JPX) Miura Kazuhiko (Aichi JPX) Huzino Seizi (Anjo JPX) Kanehara Kenji (Aichi JPX) Hattori Tadashi (Okazaki JPX). Direct-heated flow measuring apparatus having improved response characteristics. USP1990044912975.
  4. Mitov, Iliya. Filled hotwire elements and sensors for thermal conductivity detectors. USP2010037670046.
  5. Miyata, Motoyuki; Tokuyasu, Noboru; Fukatsu, Katsuaki. Flow meter and exhaust gas recirculation system using the same. USP2009057526955.
  6. Sato Kanemasa (Katsuta JPX) Ueno Sadayasu (Katsuta JPX). Hot film type air flow meter having a temperature sensing exothermic resistor. USP1988124793176.
  7. McCoy,Fred Grant; Fazekas,Jonathan Mark; Borntrager,Ryan R.. Method and apparatus for detecting a gas. USP2006057051578.
  8. McCoy, Fred Grant; Fazekas, Jonathan Mark; Borntrager, Ryan R.. Method and apparatus for detecting leaks. USP2005016840086.
  9. McCoy, Fred Grant; Fazekas, Jonathan Mark; Borntrager, Ryan R.. Method and apparatus for detecting leaks. USP2005036860140.
  10. McCoy, Fred Grant; Fazekas, Jonathan Mark; Borntrager, Ryan R.. Method and apparatus for detecting leaks. USP2005036860141.
  11. McCoy,Fred Grant; Fazekas,Jonathan Mark; Borntrager,Ryan R.. Method and apparatus for detecting leaks. USP2007027178385.
  12. Inada Masanori (Himeji JPX) Ohtani Hichiro (Himeji JPX) Yamakawa Tomoya (Himeji JPX). Thermal flow sensor. USP1990044912974.