CH244640A - Eavesdropping device for lines, motors and machines flowing through. - Google Patents

Eavesdropping device for lines, motors and machines flowing through.

Info

Publication number
CH244640A
CH244640A CH244640DA CH244640A CH 244640 A CH244640 A CH 244640A CH 244640D A CH244640D A CH 244640DA CH 244640 A CH244640 A CH 244640A
Authority
CH
Switzerland
Prior art keywords
motors
machines
flowing
lines
eavesdropping device
Prior art date
Application number
Other languages
German (de)
Inventor
Kellenberger Karl
Original Assignee
Kellenberger Karl
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 Kellenberger Karl filed Critical Kellenberger Karl
Publication of CH244640A publication Critical patent/CH244640A/en

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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B7/00—Instruments for auscultation
    • A61B7/02—Stethoscopes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
CH244640D 1943-11-23 1943-11-23 Eavesdropping device for lines, motors and machines flowing through. CH244640A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH244640T 1943-11-23

Publications (1)

Publication Number Publication Date
CH244640A true CH244640A (en) 1946-09-30

Family

ID=4464398

Family Applications (1)

Application Number Title Priority Date Filing Date
CH244640D CH244640A (en) 1943-11-23 1943-11-23 Eavesdropping device for lines, motors and machines flowing through.

Country Status (2)

Country Link
CH (1) CH244640A (en)
GB (1) GB590744A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670806A (en) * 1950-09-06 1954-03-02 Sebastiani Peter Instrument for locating defects in machinery, pipe lines, and the like
US2753948A (en) * 1952-09-29 1956-07-10 Int Research & Dev Co Ltd Filtering cell prod for vibratory pick-up devices
CN112461359B (en) * 2020-12-17 2022-02-01 安徽江淮汽车集团股份有限公司 Mounting structure and noise testing device

Also Published As

Publication number Publication date
GB590744A (en) 1947-07-28

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