NO116791B - - Google Patents

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Info

Publication number
NO116791B
NO116791B NO146748A NO14674862A NO116791B NO 116791 B NO116791 B NO 116791B NO 146748 A NO146748 A NO 146748A NO 14674862 A NO14674862 A NO 14674862A NO 116791 B NO116791 B NO 116791B
Authority
NO
Norway
Prior art keywords
filament
lamp
filling
wound
nitrogen
Prior art date
Application number
NO146748A
Other languages
English (en)
Norwegian (no)
Inventor
W Pakala
J Thompson
R Lester
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of NO116791B publication Critical patent/NO116791B/no

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/802—Systems for determining direction or deviation from predetermined direction
    • G01S3/805—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristics of a transducer or transducer system to give a desired condition of signal derived from that transducer or transducer system, e.g. to give a maximum or minimum signal
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Locating Faults (AREA)
  • Discharge Lamp (AREA)
NO146748A 1961-12-15 1962-12-08 NO116791B (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US159688A US3253457A (en) 1961-12-15 1961-12-15 Apparatus for locating trouble sources which generate ultrasonic vibrations

Publications (1)

Publication Number Publication Date
NO116791B true NO116791B (da) 1969-05-19

Family

ID=22573576

Family Applications (1)

Application Number Title Priority Date Filing Date
NO146748A NO116791B (da) 1961-12-15 1962-12-08

Country Status (4)

Country Link
US (1) US3253457A (da)
JP (1) JPS3823701B1 (da)
GB (1) GB956211A (da)
NO (1) NO116791B (da)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500676A (en) * 1968-03-15 1970-03-17 Gulf Research Development Co Methods and apparatus for detecting leaks
US3592967A (en) * 1968-05-20 1971-07-13 George A Harris Ultrasonic detector
US3681750A (en) * 1970-07-02 1972-08-01 Gte Laboratories Inc Object detection apparatus
GB1372724A (en) * 1971-02-05 1974-11-06 Ici Ltd Detection of velocities of fluids in conduits
GB1604399A (en) 1977-12-13 1981-12-09 Nat Res Dev Methods for monitoring electrical discharge machining and apparatus for such machining
US4287581A (en) * 1980-02-19 1981-09-01 Neale Sr Dory J Ultrasonic fluid leak detector
US4583405A (en) * 1984-06-04 1986-04-22 Simmons Levy M Testing device
FI77347C (fi) * 1987-04-23 1989-02-10 Uuden Teknologian Keskus Oy Anordning foer att goera laettare samtidigt tittande och lyssnande pao ett avlaegset objekt.
US5089997A (en) * 1990-11-02 1992-02-18 Pasar, Inc. Ultrasonic energy detector with frequency and amplitude indications and background noise reduction
GB2337117B (en) 1998-05-04 2001-04-04 Csi Technology Inc Digital ultrasonic monitoring system and method
WO2004045088A2 (en) * 2002-11-12 2004-05-27 U-E Systems, Inc. System and method for heterodyning an ultrasonic signal
US7293454B2 (en) * 2003-12-12 2007-11-13 Avl North America Inc. Anti-aliasing acoustic filter in the presence of pulsating flow
US9557365B2 (en) 2013-03-14 2017-01-31 Hubbell Incorporated Apparatuses, systems and methods for detecting corona
CN119400018B (zh) * 2024-09-19 2025-09-30 广东职业技术学院 汽车故障的仿真实训方法及系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE576165C (de) * 1933-05-08 Universum Film Akt Ges Einrichtung zur Tonaufnahme mit Mikrophon, insbesondere zu Tonfilmzwecken
US1886914A (en) * 1928-11-20 1932-11-08 Mason Slichter & Gauld Inc Locating leaks in reservoirs
US2031919A (en) * 1931-04-25 1936-02-25 Bell Telephone Labor Inc Amplifying system
US2447333A (en) * 1931-12-30 1948-08-17 Us Navy Ultra-audible sound reception
US2414695A (en) * 1939-10-31 1947-01-21 Rca Corp Apparatus for locating sound sources
US2459162A (en) * 1940-11-16 1949-01-18 Harvey C Hayes Acoustical sound locating device
US2324305A (en) * 1941-01-30 1943-07-13 Gen Electric Sound stroboscope
US2460316A (en) * 1944-07-31 1949-02-01 Horace M Trent Echo ranging and listening gear
LU31360A1 (da) * 1951-04-25
US3016457A (en) * 1957-09-30 1962-01-09 Gen Railway Signal Co Detection means for improperly lubricated journals
US3019637A (en) * 1959-03-24 1962-02-06 Curtiss Wright Corp Ultrasonic testing arrangement
US3192516A (en) * 1961-11-14 1965-06-29 Hewlett Packard Co Vibration detector

Also Published As

Publication number Publication date
US3253457A (en) 1966-05-31
GB956211A (en) 1964-04-22
JPS3823701B1 (da) 1963-11-07

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