GB355776A - Improvements in or relating to hollow cylinders pertaining to vibrating members of electro-dynamic loud-speakers or the like - Google Patents

Improvements in or relating to hollow cylinders pertaining to vibrating members of electro-dynamic loud-speakers or the like

Info

Publication number
GB355776A
GB355776A GB6116/30A GB611630A GB355776A GB 355776 A GB355776 A GB 355776A GB 6116/30 A GB6116/30 A GB 6116/30A GB 611630 A GB611630 A GB 611630A GB 355776 A GB355776 A GB 355776A
Authority
GB
United Kingdom
Prior art keywords
speakers
electro
relating
cylinder
hollow cylinders
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
GB6116/30A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB355776A publication Critical patent/GB355776A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
GB6116/30A 1929-03-02 1930-02-24 Improvements in or relating to hollow cylinders pertaining to vibrating members of electro-dynamic loud-speakers or the like Expired GB355776A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL355776X 1929-03-02

Publications (1)

Publication Number Publication Date
GB355776A true GB355776A (en) 1931-08-28

Family

ID=19785213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6116/30A Expired GB355776A (en) 1929-03-02 1930-02-24 Improvements in or relating to hollow cylinders pertaining to vibrating members of electro-dynamic loud-speakers or the like

Country Status (4)

Country Link
US (1) US2020814A (enrdf_load_stackoverflow)
BE (1) BE368021A (enrdf_load_stackoverflow)
FR (1) FR690512A (enrdf_load_stackoverflow)
GB (1) GB355776A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949115C3 (de) * 1979-12-06 1982-04-22 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Dynamischer Wandler mit einer Schwingspule in einem mit einer magnetischen Flüssigkeit gefüllten Luftspalt und Verfahren zum Einfüllen und/oder gleichmäßigen Verteilen dieser Flüssigkeit

Also Published As

Publication number Publication date
US2020814A (en) 1935-11-12
FR690512A (fr) 1930-09-23
BE368021A (enrdf_load_stackoverflow)

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