NL228456A - - Google Patents

Info

Publication number
NL228456A
NL228456A NL228456DA NL228456A NL 228456 A NL228456 A NL 228456A NL 228456D A NL228456D A NL 228456DA NL 228456 A NL228456 A NL 228456A
Authority
NL
Netherlands
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL228456A publication Critical patent/NL228456A/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
    • H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
    • H01J41/04—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of thermionic cathodes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L21/00—Vacuum gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/202—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G01M3/226—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
NL228456D 1957-06-05 NL228456A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US663853A US2897437A (en) 1957-06-05 1957-06-05 Vacuum leak detection

Publications (1)

Publication Number Publication Date
NL228456A true NL228456A (de)

Family

ID=24663514

Family Applications (2)

Application Number Title Priority Date Filing Date
NL228456D NL228456A (de) 1957-06-05
NL105349D NL105349C (de) 1957-06-05

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL105349D NL105349C (de) 1957-06-05

Country Status (2)

Country Link
US (1) US2897437A (de)
NL (2) NL105349C (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3009074A (en) * 1959-05-01 1961-11-14 Gen Electric Electrical vapor detector
US3214630A (en) * 1959-08-07 1965-10-26 Varian Associates Molecular beam maser
US3090112A (en) * 1960-01-14 1963-05-21 Porter Co Inc H K Method of determining leaks in lightning arresters and the like
US3416359A (en) * 1966-07-01 1968-12-17 Texas Instruments Inc Method and apparatus for testing hermetically sealed transistor devices
US3580052A (en) * 1969-10-23 1971-05-25 Gen Electric Discharge gage for helium leak detector use
US4031742A (en) * 1972-10-10 1977-06-28 Michael Gerald C Leak detector using mass concentration gauge
US5019517A (en) * 1988-04-15 1991-05-28 Coulson Dale M System, detector and method for trace gases
US5301537A (en) * 1991-05-31 1994-04-12 W. C. Wood Company Limited Method for detecting halocarbon refrigerant leaks by usage of a continually heated mass spectrometer
US6516689B1 (en) 2000-11-08 2003-02-11 Stride Tool, Inc. Ratchet wrench

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486199A (en) * 1945-09-10 1949-10-25 Univ Minnesota Method and apparatus for determining leaks
US2507321A (en) * 1946-04-25 1950-05-09 Atomic Energy Commission Leak testing device
US2579352A (en) * 1950-04-28 1951-12-18 Gen Electric Method and apparatus for the quantitative measurement of impurities in an atmosphere
US2814018A (en) * 1954-11-26 1957-11-19 Gen Electric Measurement of volatile halogen containing components

Also Published As

Publication number Publication date
NL105349C (de) 1963-02-15
US2897437A (en) 1959-07-28

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