EP0339746A3 - Support en forme de corne de Wood pour un transducteur acoustique - Google Patents

Support en forme de corne de Wood pour un transducteur acoustique Download PDF

Info

Publication number
EP0339746A3
EP0339746A3 EP19890201068 EP89201068A EP0339746A3 EP 0339746 A3 EP0339746 A3 EP 0339746A3 EP 19890201068 EP19890201068 EP 19890201068 EP 89201068 A EP89201068 A EP 89201068A EP 0339746 A3 EP0339746 A3 EP 0339746A3
Authority
EP
European Patent Office
Prior art keywords
horn
wood
shape
acoustic transducer
transducer backing
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.)
Withdrawn
Application number
EP19890201068
Other languages
German (de)
English (en)
Other versions
EP0339746A2 (fr
Inventor
Frederick Henry Kreisler Rambow
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of EP0339746A2 publication Critical patent/EP0339746A2/fr
Publication of EP0339746A3 publication Critical patent/EP0339746A3/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Geophysics And Detection Of Objects (AREA)
EP19890201068 1988-04-29 1989-04-25 Support en forme de corne de Wood pour un transducteur acoustique Withdrawn EP0339746A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18775488A 1988-04-29 1988-04-29
US187754 1988-04-29

Publications (2)

Publication Number Publication Date
EP0339746A2 EP0339746A2 (fr) 1989-11-02
EP0339746A3 true EP0339746A3 (fr) 1991-07-03

Family

ID=22690329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890201068 Withdrawn EP0339746A3 (fr) 1988-04-29 1989-04-25 Support en forme de corne de Wood pour un transducteur acoustique

Country Status (2)

Country Link
EP (1) EP0339746A3 (fr)
NO (1) NO891761L (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2743653A1 (fr) * 2012-12-13 2014-06-18 Sick Ag Transducteur ultrasonore et procédé d'excitation et/ou de détection de signaux utrasoniques
WO2016108841A1 (fr) * 2014-12-30 2016-07-07 Halliburton Energy Services, Inc. Transducteurs acoustiques ajustables pour un outil de fond de trou
US20240118446A1 (en) * 2022-10-07 2024-04-11 Halliburton Energy Services, Inc. Wedge-Cut Backing Of Acoustic Transducer For Improved Attenuation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB705080A (en) * 1951-06-06 1954-03-10 Marconi Wireless Telegraph Co Improvements in or relating to ultra-sonic wave absorption apparatus
GB869582A (en) * 1957-08-19 1961-05-31 Chirana Praha Mechanical damping member for an electroacoustic transducer
US3403271A (en) * 1966-02-09 1968-09-24 Hewlett Packard Co Ultrasonic transducer with absorptive load

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB705080A (en) * 1951-06-06 1954-03-10 Marconi Wireless Telegraph Co Improvements in or relating to ultra-sonic wave absorption apparatus
GB869582A (en) * 1957-08-19 1961-05-31 Chirana Praha Mechanical damping member for an electroacoustic transducer
US3403271A (en) * 1966-02-09 1968-09-24 Hewlett Packard Co Ultrasonic transducer with absorptive load

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE TRANS. ON SONICS AND ULTRASONICS, vol. SU-26, no. 2, March 1979, pages 140-142, New York, US; R.G. SWARTZ et al.: "An improved wedge-type backing for piezoelectric transducers" *

Also Published As

Publication number Publication date
NO891761D0 (no) 1989-04-27
NO891761L (no) 1989-10-30
EP0339746A2 (fr) 1989-11-02

Similar Documents

Publication Publication Date Title
DE3571887D1 (en) Porous matching layer in an ultrasonic applicator
AU6365890A (en) Electro-acoustic transducer and sound reproducing system
NZ225001A (en) Loudspeaker: reflected sound waves absorbed
EP0342874A3 (fr) Transducteur à ultrasons pour un dispositif d'imagerie médical
AU9114391A (en) Ultrasonic energy detector with frequency and amplitude indications and background noise reduction
DE3478357D1 (en) Ultrasonic transducers having improved acoustic impedance matching layers
CA2064608A1 (fr) Bout pour une appareil de phacoemulsification tissulaire
EP0697257A3 (fr) Arrangement de transducteurs piézoélectriques composite ayant une impédance acoustique et électrique améliorée
DE2960263D1 (en) Piezoelectric transducers with mechanical amplification for very low frequencies and acoustic antennas
EP0375360A3 (en) Higher order transverse mode suppression in surface acoustic wave resonators
IL140655A0 (en) Acoustic device using bending wave modes
GB2247593B (en) A process and an electro-acoustic transducer for transmitting low-frequency acoustic waves into a liquid
JPS5698651A (en) Sound converter
EP0421613A3 (en) Sound generating transducer
AU2781689A (en) An acoustic emission transducer and an electrical oscillator
EP0339746A3 (fr) Support en forme de corne de Wood pour un transducteur acoustique
CA2260787A1 (fr) Transducteur de son a plaque de flexion a basse frequence de resonance
USD249509S (en) Acoustical transformer for coupling sound waves from the diaphragm to the throat of a horn-type loudspeaker
JPS56126397A (en) Speaker system
USD281623S (en) Hand held ultrasonic transducer for patient monitoring use
GB2218292B (en) Surface acoustic wave device
鲍善惠 Dynamic matching for a piezoelectric transducer
AU2928889A (en) Ultrasonic transducer
JPS5772494A (en) Ultrasonic probe
沙家正 et al. STUDY ON THE ACOUSTICAL MECHANISM OF ACTIVE ABSORBER

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB NL

17P Request for examination filed

Effective date: 19911206

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19931103