GB762735A - Apparatus for detecting fluid flows and leakages - Google Patents

Apparatus for detecting fluid flows and leakages

Info

Publication number
GB762735A
GB762735A GB32658/54A GB3265854A GB762735A GB 762735 A GB762735 A GB 762735A GB 32658/54 A GB32658/54 A GB 32658/54A GB 3265854 A GB3265854 A GB 3265854A GB 762735 A GB762735 A GB 762735A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
bearing mass
probe
plunger
nov
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
GB32658/54A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB762735A publication Critical patent/GB762735A/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
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
    • G01M3/243—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

762,735. Stethoscopes. PIOCHET, J. Nov. 11, 1954 [Nov. 16, 1953], No. 32658/54. Class 81(2) [Also in Group XXXIX] A stethoscope for detecting the flow of liquids comprises a tubular probe 1, a diaphragm 4 and either electric or acoustic means, or both, for enabling the diaphragm vibrations to be heard. The diaphragm is engaged by a circular flange 3 on the probe and one or more circular rims 6, 7 on a bearing mass 5. The bearing mass is urged against the diaphragm by a screw plunger 12. The diaphragm tension can be increased further by a second plunger 16 mounted within the first, the second plunger engaging the diaphragm centrally. The bearing mass 24, Fig. 2, is a permanent magnet and a coil 25 on the diaphragm transmits electrical vibrations to an amplifier 26 which feeds earphones 28. Holes 18 in the bearing mass and fittings 19, 20 enable conventional stethoscope tubes to be used. The casing is attached to the probe by means of a rubber sleeve 8, 10. The outside edge of the diaphragm is held by a felt lining 22. The diaphragm may be corrugated and may have zones of different thicknesses.
GB32658/54A 1953-11-16 1954-11-11 Apparatus for detecting fluid flows and leakages Expired GB762735A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR762735X 1953-11-16

Publications (1)

Publication Number Publication Date
GB762735A true GB762735A (en) 1956-12-05

Family

ID=9177591

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32658/54A Expired GB762735A (en) 1953-11-16 1954-11-11 Apparatus for detecting fluid flows and leakages

Country Status (1)

Country Link
GB (1) GB762735A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4116043A (en) * 1977-07-11 1978-09-26 American Can Company Electronic detection apparatus for leaks
CN106052963A (en) * 2016-05-20 2016-10-26 黄泽浩 Device used for clinical test of VSD air leakage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4116043A (en) * 1977-07-11 1978-09-26 American Can Company Electronic detection apparatus for leaks
CN106052963A (en) * 2016-05-20 2016-10-26 黄泽浩 Device used for clinical test of VSD air leakage

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