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특허 상세정보

Method of and apparatus for compensating for temperature in leak testing

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G01M-003/26   
미국특허분류(USC) 73/492
출원번호 US-0099777 (1979-12-03)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 20  인용 특허 : 1
초록

A method and apparatus for testing for leaks in a test item which has a temperature different from ambient temperature in which the test item is sealed at atmospheric pressure and the pressure of the sealed air in the test item is measured. The rate of change of the pressure of the sealing air due to the non-ambient temperature of the test item is calculated for providing a temperature correction signal proportional to the temperature of the test item and the temperature correction signal is stored. The test item is then subjected to a leak test pressure...

대표
청구항

An apparatus for testing leaks in a test item having a temperature different than ambient temperature comprising, means for sealing the test item in ambient air, transducer means for measuring the pressure in the test item, means conducted to the transducer means for measuring the rate of change of the pressure of the air sealing the test item for providing a temperature correction, means connected to the measuring means for storing the rate of change measurement, means for subjecting the test item to a pressurized fluid, and means connected between the ...

이 특허를 인용한 특허 피인용횟수: 20

  1. Hraud Roger A. (Orsay FRX) Amiel Jacques (Clamart FRX). Apparatus for leak testing at least one wall portion and/or a volume delimited by said wall portion, and a method of det. USP1987024640122.
  2. Jansch Manfred (Garbsen DEX). Apparatus for testing the gas-tightness of joints between hollow bodies. USP1989104876884.
  3. Fazekas, Jonathan Mark. Automated timer and setpoint selection for pneumatic test equipment. USP2009097594424.
  4. Rankin,Brent C.. Automatic control of leak test unit during testing and analysis of an engine. USP2008057367219.
  5. Lane, Malcolm David; Poursartip, Anoshiravan; Fernlund, Goran; Floyd, Anthony Michael; Van Ee, David Andrew; Hibbert, Morgan Edwin John. Detection, monitoring, and management of gas presence, gas flow and gas leaks in composites manufacturing. USP2018019862144.
  6. Docy, Michael J.; Hart, George R.; Bauman, Robert L.. Fuel tank tester. USP2005016840089.
  7. Furuse Akio (Hachioji JPX). Leakage inspection method with object type compensation. USP1987084686638.
  8. McCoy,Fred Grant; Fazekas,Jonathan Mark; Borntrager,Ryan R.. Method and apparatus for detecting a gas. USP2006057051578.
  9. Holm Albert E. (Marine City MI) Holm Grant A. (Richmond MI). Method and apparatus for detecting leaks. USP1986124625545.
  10. McCoy, Fred Grant; Fazekas, Jonathan Mark; Borntrager, Ryan R.. Method and apparatus for detecting leaks. USP2005016840086.
  11. McCoy, Fred Grant; Fazekas, Jonathan Mark; Borntrager, Ryan R.. Method and apparatus for detecting leaks. USP2005036860140.
  12. McCoy, Fred Grant; Fazekas, Jonathan Mark; Borntrager, Ryan R.. Method and apparatus for detecting leaks. USP2005036860141.
  13. McCoy,Fred Grant; Fazekas,Jonathan Mark; Borntrager,Ryan R.. Method and apparatus for detecting leaks. USP2007027178385.
  14. Jansch Manfred,DEX. Method and apparatus for testing threaded joints and threaded members. USP2000026026675.
  15. Sawada Koji (Tokyo JPX). Method of and apparatus for inspecting liquid storage tanks for leaks by means of pressure decrease and increase. USP1984044442702.
  16. Lehmann Martin (Obere Farnbhlstrasse 1 5610 Wohlen CHX). Method of leak testing, leak testing device, and temperature measuring device as well as a method for measuring a temper. USP1990014896530.
  17. Brayman Semyon (28023 Berkshire Southfield MI 48076) Bullock Ronald N. (7520 Merrick Taylor MI 48180). Method of temperature compensating leak rate testing. USP1985084532795.
  18. Black Gregg T. ; Lefebvre Michael C.. Multiple cavity leak test process. USP2000096112578.
  19. Furuse Kiyoshi (Hino JPX). Pressure variation detecting type leakage inspection system with temperature compensation. USP1987064675834.
  20. Smith Richard Michael. Three-way valved apparatus and method for testing pressure in a fluid system. USP2000036038929.