GB246099A - Improvements in sound reproducing devices - Google Patents

Improvements in sound reproducing devices

Info

Publication number
GB246099A
GB246099A GB22351/25A GB2235125A GB246099A GB 246099 A GB246099 A GB 246099A GB 22351/25 A GB22351/25 A GB 22351/25A GB 2235125 A GB2235125 A GB 2235125A GB 246099 A GB246099 A GB 246099A
Authority
GB
United Kingdom
Prior art keywords
membrane
secured
shows
sound reproducing
flexed
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
GB22351/25A
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
Application filed by Individual filed Critical Individual
Publication of GB246099A publication Critical patent/GB246099A/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

Landscapes

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

Abstract

246,099. Forest, L. de. Jan. 15, 1923. [Convention date]. Diaphragms; magnetic instruments; loudspeakers.-A sound-reproducing device consists of a substantially rigid curved or flexed membrane to one edge of which vibrations are imparted. Fig. 5 shows such a membrane 1 secured by a clamp 2, and vibrated by electromagnetic devices 4. The membrane may be rectangular or triangular, it may be flexed nearly circular in section, and it may be encased. Fig. 9 shows a motion-picture screen having on two edges such membranes 1 secured in a framer 13.
GB22351/25A 1925-01-15 1925-09-07 Improvements in sound reproducing devices Expired GB246099A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US246099XA 1925-01-15 1925-01-15

Publications (1)

Publication Number Publication Date
GB246099A true GB246099A (en) 1926-05-13

Family

ID=21821466

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22351/25A Expired GB246099A (en) 1925-01-15 1925-09-07 Improvements in sound reproducing devices

Country Status (1)

Country Link
GB (1) GB246099A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077228A2 (en) * 1981-09-17 1983-04-20 Tadashi Sawafuji Electroacoustic transducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077228A2 (en) * 1981-09-17 1983-04-20 Tadashi Sawafuji Electroacoustic transducer
EP0077228A3 (en) * 1981-09-17 1983-06-01 Tadashi Sawafuji Electroacoustic transducer

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