GB266675A - Improvements in acoustic devices - Google Patents

Improvements in acoustic devices

Info

Publication number
GB266675A
GB266675A GB30580/26A GB3058026A GB266675A GB 266675 A GB266675 A GB 266675A GB 30580/26 A GB30580/26 A GB 30580/26A GB 3058026 A GB3058026 A GB 3058026A GB 266675 A GB266675 A GB 266675A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
attached
supports
periphery
reeds
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
GB30580/26A
Other languages
English (en)
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB266675A publication Critical patent/GB266675A/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)
  • Details Of Audible-Bandwidth Transducers (AREA)
GB30580/26A 1926-02-24 1926-12-02 Improvements in acoustic devices Expired GB266675A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US90297A US1678833A (en) 1926-02-24 1926-02-24 Acoustic device

Publications (1)

Publication Number Publication Date
GB266675A true GB266675A (en) 1928-03-02

Family

ID=22222163

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30580/26A Expired GB266675A (en) 1926-02-24 1926-12-02 Improvements in acoustic devices

Country Status (4)

Country Link
US (1) US1678833A (instruction)
FR (1) FR626679A (instruction)
GB (1) GB266675A (instruction)
NL (1) NL21660C (instruction)

Also Published As

Publication number Publication date
NL21660C (instruction)
FR626679A (fr) 1927-09-16
US1678833A (en) 1928-07-31

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