CH591044A5 - - Google Patents

Info

Publication number
CH591044A5
CH591044A5 CH1674174A CH1674174A CH591044A5 CH 591044 A5 CH591044 A5 CH 591044A5 CH 1674174 A CH1674174 A CH 1674174A CH 1674174 A CH1674174 A CH 1674174A CH 591044 A5 CH591044 A5 CH 591044A5
Authority
CH
Switzerland
Application number
CH1674174A
Original Assignee
Sumitomo Chemical Co
Japan National Railway
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.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co, Japan National Railway filed Critical Sumitomo Chemical Co
Publication of CH591044A5 publication Critical patent/CH591044A5/xx

Links

Classifications

    • 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
    • G01M3/042—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid
    • G01M3/045—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means
    • 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
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
CH1674174A 1973-12-18 1974-12-17 CH591044A5 (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14267273A JPS546240B2 (xx) 1973-12-18 1973-12-18

Publications (1)

Publication Number Publication Date
CH591044A5 true CH591044A5 (xx) 1977-08-31

Family

ID=15320806

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1674174A CH591044A5 (xx) 1973-12-18 1974-12-17

Country Status (4)

Country Link
US (1) US3970863A (xx)
JP (1) JPS546240B2 (xx)
CH (1) CH591044A5 (xx)
FR (1) FR2254749B1 (xx)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5947256B2 (ja) * 1977-05-25 1984-11-17 株式会社潤工社 流体検知素子
JPS5429695A (en) * 1977-08-09 1979-03-05 Nitto Electric Ind Co Oil detecting element and production thereof
JPS5429694A (en) * 1977-08-09 1979-03-05 Nitto Electric Ind Co Oil detecting probe
FR2455294A1 (fr) * 1979-04-27 1980-11-21 Inst Francais Du Petrole Elements sensibles a certains produits organiques polluants, notamment les hydrocarbures
US4487057A (en) * 1980-09-16 1984-12-11 Raychem Corporation Continuous sense and locate device
US4545927A (en) * 1982-07-29 1985-10-08 Phillips Petroleum Company Conductive (hard) rubber compositions
US4642202A (en) * 1982-07-29 1987-02-10 Phillips Petroleum Company Conductive (hard) rubber compositions
US5382909A (en) * 1983-06-30 1995-01-17 Raychem Corporation Method for detecting and obtaining information about changes in variables
US4638920A (en) * 1984-06-26 1987-01-27 Goodhues Jr George S Underground facility for storage of liquids
US4682156A (en) * 1984-11-02 1987-07-21 In-Situ, Inc. Solvent detector
EP0222013B1 (en) * 1985-06-12 1993-02-24 RAYCHEM CORPORATION (a Delaware corporation) Hydrocarbon sensor
US4926165A (en) * 1985-10-15 1990-05-15 Raychem Corporation Devices for detecting and obtaining information about an event
US4631952A (en) * 1985-08-30 1986-12-30 Chevron Research Company Resistive hydrocarbon leak detector
DE3724384C1 (de) * 1987-07-23 1988-04-14 Daimler Benz Ag Warnvorrichtung fuer die Bremsfluessigkeit von hydraulischen Bremsanlagen von Fahrzeugen
US4922232A (en) * 1988-10-21 1990-05-01 Bosich Joseph F Leakage containment and detection systems
US5173684A (en) * 1989-09-08 1992-12-22 Mitsubishi Cable Industries, Ltd. Low molecular weight organic liquid sensor and detection system using same
US5187366A (en) * 1991-06-25 1993-02-16 Joram Hopenfeld Sensors for detecting leaks
US5200615A (en) * 1991-06-25 1993-04-06 Joram Hopenfeld Method and apparatus for detecting the presence of fluids
FR2704062B1 (fr) * 1993-04-13 1995-05-24 Inst Francais Du Petrole Dispositif destiné à détecter des traces de produits polluants dans un milieu aqueux.
US5514338A (en) * 1994-11-29 1996-05-07 One Plus Corp. Device for sensing liquid hydrocarbon
US6170318B1 (en) 1995-03-27 2001-01-09 California Institute Of Technology Methods of use for sensor based fluid detection devices
US5788833A (en) * 1995-03-27 1998-08-04 California Institute Of Technology Sensors for detecting analytes in fluids
US5571401A (en) * 1995-03-27 1996-11-05 California Institute Of Technology Sensor arrays for detecting analytes in fluids
FR3013119B1 (fr) * 2013-11-08 2017-06-23 Ttk Element detecteur gonflant, cable de detection modulaire et systeme de detection pour detecter des fuites de liquide non-conducteur
GB2582011A (en) * 2019-03-08 2020-09-09 Valbetech Inc Sensors for detecting presence of fluids

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2386412A (en) * 1942-04-28 1945-10-09 Selas Corp Of America Liquid detecting means
US2432367A (en) * 1943-09-23 1947-12-09 Wingfoot Corp Leak detector
BE513364A (xx) * 1951-12-29
US3470340A (en) * 1965-09-13 1969-09-30 Butts Ernest Otto Leak detection apparatus
US3564526A (en) * 1966-12-23 1971-02-16 Butts Ernest Otto Pipeline leak detection device
US3427414A (en) * 1967-01-13 1969-02-11 Sinclair Research Inc Switch assembly for detecting underground leaks
US3720797A (en) * 1971-09-10 1973-03-13 K Gunn Gas fusing sensing device

Also Published As

Publication number Publication date
FR2254749A1 (xx) 1975-07-11
FR2254749B1 (xx) 1976-10-22
JPS5093190A (xx) 1975-07-25
JPS546240B2 (xx) 1979-03-26
US3970863A (en) 1976-07-20

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Legal Events

Date Code Title Description
PL Patent ceased