GB525154A - Improvements in and relating to dynamic sound-converting apparatus - Google Patents

Improvements in and relating to dynamic sound-converting apparatus

Info

Publication number
GB525154A
GB525154A GB4998/39A GB499839A GB525154A GB 525154 A GB525154 A GB 525154A GB 4998/39 A GB4998/39 A GB 4998/39A GB 499839 A GB499839 A GB 499839A GB 525154 A GB525154 A GB 525154A
Authority
GB
United Kingdom
Prior art keywords
relating
converting apparatus
dome
feb
diaphragm
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
GB4998/39A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB525154A publication Critical patent/GB525154A/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
    • H04R9/06—Loudspeakers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

525,154. Loud-speakers ; microphones. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 15, 1939, No. 4998. Convention date, Feb. 16, 1938. [Class 40 (iv)] In a moving-coil loud-speaker or microphone, the diaphragm has a domed central portion 6, an annular rim clamped at its periphery, and an intermediate part 5 curved in the opposite direction to the dome, the diameter of the coil 4 being smaller than that of the domed portion and equal to the radius of the free portion of the diaphragm. The radius of curvature of the recessed part 5 is preferably one-tenth that of the dome.
GB4998/39A 1938-02-16 1939-02-15 Improvements in and relating to dynamic sound-converting apparatus Expired GB525154A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE525154X 1938-02-16

Publications (1)

Publication Number Publication Date
GB525154A true GB525154A (en) 1940-08-22

Family

ID=6552512

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4998/39A Expired GB525154A (en) 1938-02-16 1939-02-15 Improvements in and relating to dynamic sound-converting apparatus

Country Status (2)

Country Link
FR (1) FR850393A (en)
GB (1) GB525154A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022377A (en) * 1956-10-29 1962-02-20 Philco Corp Sound reproducing system
EP0055841A1 (en) * 1980-12-27 1982-07-14 Licentia Patent-Verwaltungs-GmbH Electrodynamic loudspeaker with diaphragm in the form of a dome
FR2515468A1 (en) * 1981-10-26 1983-04-29 Sony Corp DYNAMIC HEADER

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022377A (en) * 1956-10-29 1962-02-20 Philco Corp Sound reproducing system
EP0055841A1 (en) * 1980-12-27 1982-07-14 Licentia Patent-Verwaltungs-GmbH Electrodynamic loudspeaker with diaphragm in the form of a dome
FR2515468A1 (en) * 1981-10-26 1983-04-29 Sony Corp DYNAMIC HEADER

Also Published As

Publication number Publication date
FR850393A (en) 1939-12-15

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