GB460064A - Electro-dynamic devices for interconverting electrical oscillations and sound waves - Google Patents

Electro-dynamic devices for interconverting electrical oscillations and sound waves

Info

Publication number
GB460064A
GB460064A GB3470235A GB3470235A GB460064A GB 460064 A GB460064 A GB 460064A GB 3470235 A GB3470235 A GB 3470235A GB 3470235 A GB3470235 A GB 3470235A GB 460064 A GB460064 A GB 460064A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
rings
cylindrical portion
cylindrical
secured
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
GB3470235A
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
Priority to BE413120D priority Critical patent/BE413120A/xx
Application filed by Individual filed Critical Individual
Priority to GB3470235A priority patent/GB460064A/en
Priority to FR800171D priority patent/FR800171A/en
Publication of GB460064A publication Critical patent/GB460064A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

460,064. Loud-speakers; microphones. YOUNG, L., and YOUNG, A., (trading as VITAVOX ACOUSTICS). Dec. 13,1935, No. 34702. [Class 40 (iv)] In a moving coil loud-speaker or microphone the vibratory diaphragm is formed wholly of metal and includes a cylindrical metal portion, on which the speech coil is carried, of openwork structure to prevent the circulation of eddy currents in the cylindrical portion. The diaphragm, which may be made in one piece, has a cylindrical portion 2 provided with staggered perforations 4 and an integral radial flange 3 to which are secured supporting rings 16, 17 for mounting the diaphragm on the magnet structure. A strip of rice paper may be secured around the cylindrical portion 2 to prevent the circulation of air through the perforations 4. The diaphragm is mounted and the coil centred in the air gap 15 by means of a circumferential rim 20 formed on the outer pole-plate 12 and co-operating with the rings 16, 17. In a modification, Fig. 4 (not shown), in which the plane of the circumferential flange is disposed near the upper end of the cylindrical flange, the diaphragm is centred by a circular recess formed in the upper surface of the outer pole-plate in association with rings such as 16, 17, Fig. 1, secured to the diaphragm.
GB3470235A 1935-12-13 1935-12-13 Electro-dynamic devices for interconverting electrical oscillations and sound waves Expired GB460064A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE413120D BE413120A (en) 1935-12-13
GB3470235A GB460064A (en) 1935-12-13 1935-12-13 Electro-dynamic devices for interconverting electrical oscillations and sound waves
FR800171D FR800171A (en) 1935-12-13 1935-12-31 Electro-dynamic devices for transforming electric waves into sound waves and vice versa

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3470235A GB460064A (en) 1935-12-13 1935-12-13 Electro-dynamic devices for interconverting electrical oscillations and sound waves

Publications (1)

Publication Number Publication Date
GB460064A true GB460064A (en) 1937-01-20

Family

ID=10368896

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3470235A Expired GB460064A (en) 1935-12-13 1935-12-13 Electro-dynamic devices for interconverting electrical oscillations and sound waves

Country Status (3)

Country Link
BE (1) BE413120A (en)
FR (1) FR800171A (en)
GB (1) GB460064A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2553150A (en) * 1949-10-28 1951-05-15 Edison Inc Thomas A Permanent magnet electrodynamic transducer
US2638509A (en) * 1947-08-27 1953-05-12 Magnavox Australia Pty Ltd Diaphragm unit for loud-speakers
US3991286A (en) * 1975-06-02 1976-11-09 Altec Corporation Heat dissipating device for loudspeaker voice coil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638509A (en) * 1947-08-27 1953-05-12 Magnavox Australia Pty Ltd Diaphragm unit for loud-speakers
US2553150A (en) * 1949-10-28 1951-05-15 Edison Inc Thomas A Permanent magnet electrodynamic transducer
US3991286A (en) * 1975-06-02 1976-11-09 Altec Corporation Heat dissipating device for loudspeaker voice coil

Also Published As

Publication number Publication date
FR800171A (en) 1936-06-29
BE413120A (en)

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