FR1408019A - Electro-hydraulic device for detecting a pressure difference - Google Patents

Electro-hydraulic device for detecting a pressure difference

Info

Publication number
FR1408019A
FR1408019A FR988329A FR988329A FR1408019A FR 1408019 A FR1408019 A FR 1408019A FR 988329 A FR988329 A FR 988329A FR 988329 A FR988329 A FR 988329A FR 1408019 A FR1408019 A FR 1408019A
Authority
FR
France
Prior art keywords
electro
detecting
pressure difference
hydraulic device
hydraulic
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
FR988329A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Calumet and Hecla Inc
Original Assignee
Calumet and Hecla Inc
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
Priority claimed from US314450A external-priority patent/US3316753A/en
Application filed by Calumet and Hecla Inc filed Critical Calumet and Hecla Inc
Priority to FR988329A priority Critical patent/FR1408019A/en
Application granted granted Critical
Publication of FR1408019A publication Critical patent/FR1408019A/en
Expired legal-status Critical Current

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
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2846—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for tubes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR988329A 1963-10-07 1964-09-16 Electro-hydraulic device for detecting a pressure difference Expired FR1408019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR988329A FR1408019A (en) 1963-10-07 1964-09-16 Electro-hydraulic device for detecting a pressure difference

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US314450A US3316753A (en) 1963-10-07 1963-10-07 Electro-hydraulic pressure differential tester
FR988329A FR1408019A (en) 1963-10-07 1964-09-16 Electro-hydraulic device for detecting a pressure difference

Publications (1)

Publication Number Publication Date
FR1408019A true FR1408019A (en) 1965-08-06

Family

ID=26209988

Family Applications (1)

Application Number Title Priority Date Filing Date
FR988329A Expired FR1408019A (en) 1963-10-07 1964-09-16 Electro-hydraulic device for detecting a pressure difference

Country Status (1)

Country Link
FR (1) FR1408019A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115077786A (en) * 2022-06-30 2022-09-20 江西省水利科学院 Magnetic force exhaust formula pressure-measuring pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115077786A (en) * 2022-06-30 2022-09-20 江西省水利科学院 Magnetic force exhaust formula pressure-measuring pipe

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