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
Links
Classifications
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
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- 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
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- 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)
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 (xx) |
Family
ID=24663514
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL105349D NL105349C (xx) | 1957-06-05 | ||
NL228456D NL228456A (xx) | 1957-06-05 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL105349D NL105349C (xx) | 1957-06-05 |
Country Status (2)
Country | Link |
---|---|
US (1) | US2897437A (xx) |
NL (2) | NL228456A (xx) |
Families Citing this family (9)
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)
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 |
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0
- NL NL105349D patent/NL105349C/xx active
- NL NL228456D patent/NL228456A/xx unknown
-
1957
- 1957-06-05 US US663853A patent/US2897437A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US2897437A (en) | 1959-07-28 |
NL105349C (xx) | 1963-02-15 |