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GB684418A - Focused electromechanical transducing device - Google Patents

Focused electromechanical transducing device

Info

Publication number
GB684418A
GB684418A GB5573/50A GB557350A GB684418A GB 684418 A GB684418 A GB 684418A GB 5573/50 A GB5573/50 A GB 5573/50A GB 557350 A GB557350 A GB 557350A GB 684418 A GB684418 A GB 684418A
Authority
GB
United Kingdom
Prior art keywords
concentrated
energy
acoustic
pict
ultrasonic
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
GB5573/50A
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.)
Brush Development Co
Original Assignee
Brush Development Co
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 Brush Development Co filed Critical Brush Development Co
Publication of GB684418A publication Critical patent/GB684418A/en
Expired 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
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/32—Sound-focusing or directing, e.g. scanning characterised by the shape of the source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

<PICT:0684418/IV (a)/1> Thermo-setting material carried in moulds 91 is subjected to heat treatment by ultrasonic acoustic energy which is radiated by a cylindrical trough 81 of a polycrystalline dielectric transducing material (see Group XXXIX) and concentrated in the longitudinal axis, the moulds being wholly or partially immersed in a suitable acoustic conducting liquid 86 and moved along the axis by a conveyer 88.ALSO:<PICT:0684418/III/1> <PICT:0684418/III/2> Chemical reactions in a fluid may be accelerated by the application of ultrasonic acoustic energy which is concentrated at the common centre of curvative 41 of two polycrystalline dielectric transducers 44, 45 formed with concave spherical or cylindrical surfaces (see Group XXXIX). In an arrangement for degassing a liquid 109, Fig. 6, contained in an open-topped tube 108 provided with an exit pipe 111, the ultrasonic energy radiated by a transducer 101 to its centre of curvature is delimited by an acoustic lens comprising a shaped aluminium plate 107 which closes the lower end of tube 108. This arrangement avoids the violent reaction which may occur due to concentrated acoustic energy. In an alternative embodiment, Fig. 7 (not shown), the radiated energy is transmitted into the tube by an acoustic reflector.ALSO:The ageing of spirituous beverages is accelerated by the application of ultrasonic acoustic energy concentrated at the centre of curvature of a polycrystalline dielectric transducer having a concave spherical radiating surface (see Group XXXIX).
GB5573/50A 1949-04-21 1950-03-06 Focused electromechanical transducing device Expired GB684418A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US684418XA 1949-04-21 1949-04-21

Publications (1)

Publication Number Publication Date
GB684418A true GB684418A (en) 1952-12-17

Family

ID=22082604

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5573/50A Expired GB684418A (en) 1949-04-21 1950-03-06 Focused electromechanical transducing device

Country Status (1)

Country Link
GB (1) GB684418A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1067767B (en) * 1956-03-12 1959-10-29 Siemens Ag Arrangement for treating webs of fabric, e.g. B. for aging wet paper webs
DE1075875B (en) * 1954-08-14 1960-02-18 J U H Krautkraemer Ges Fuer El Device for damping electromechanical oscillators, especially for the ultrasonic echo method of material testing
DE2821573A1 (en) * 1977-05-17 1978-12-21 Nat Res Dev ACOUSTIC DEVICE
DE3439184A1 (en) * 1983-11-21 1985-05-30 Ultrasonic Power Corp., Freeport, Ill. ULTRASONIC CLEANING TANK AND METHOD FOR THE PRODUCTION THEREOF
GB2397992B (en) * 2001-11-05 2005-06-08 Beijing Yuande Biomedical Proj A focus ultrasonic wave source
RU2523152C2 (en) * 2010-04-02 2014-07-20 Чунцин Хайфу Медикал Текнолоджи Ко., Лтд. Ultrasonic transducer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075875B (en) * 1954-08-14 1960-02-18 J U H Krautkraemer Ges Fuer El Device for damping electromechanical oscillators, especially for the ultrasonic echo method of material testing
DE1067767B (en) * 1956-03-12 1959-10-29 Siemens Ag Arrangement for treating webs of fabric, e.g. B. for aging wet paper webs
DE2821573A1 (en) * 1977-05-17 1978-12-21 Nat Res Dev ACOUSTIC DEVICE
DE3439184A1 (en) * 1983-11-21 1985-05-30 Ultrasonic Power Corp., Freeport, Ill. ULTRASONIC CLEANING TANK AND METHOD FOR THE PRODUCTION THEREOF
GB2397992B (en) * 2001-11-05 2005-06-08 Beijing Yuande Biomedical Proj A focus ultrasonic wave source
RU2523152C2 (en) * 2010-04-02 2014-07-20 Чунцин Хайфу Медикал Текнолоджи Ко., Лтд. Ultrasonic transducer

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