GB381803A - Improvements in or relating to the actuating members of electrodynamic loudspeakers,microphones and the like and the method of manufacturing such members - Google Patents

Improvements in or relating to the actuating members of electrodynamic loudspeakers,microphones and the like and the method of manufacturing such members

Info

Publication number
GB381803A
GB381803A GB1801/32A GB180132A GB381803A GB 381803 A GB381803 A GB 381803A GB 1801/32 A GB1801/32 A GB 1801/32A GB 180132 A GB180132 A GB 180132A GB 381803 A GB381803 A GB 381803A
Authority
GB
United Kingdom
Prior art keywords
layers
coil
silk
wire
mandrel
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
GB1801/32A
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 GB381803A publication Critical patent/GB381803A/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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
GB1801/32A 1931-03-07 1932-01-20 Improvements in or relating to the actuating members of electrodynamic loudspeakers,microphones and the like and the method of manufacturing such members Expired GB381803A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL381803X 1931-03-07

Publications (1)

Publication Number Publication Date
GB381803A true GB381803A (en) 1932-10-13

Family

ID=19785660

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1801/32A Expired GB381803A (en) 1931-03-07 1932-01-20 Improvements in or relating to the actuating members of electrodynamic loudspeakers,microphones and the like and the method of manufacturing such members

Country Status (4)

Country Link
BE (1) BE385854A (enrdf_load_stackoverflow)
FR (1) FR730280A (enrdf_load_stackoverflow)
GB (1) GB381803A (enrdf_load_stackoverflow)
NL (1) NL34769C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963882A (en) * 1975-03-14 1976-06-15 Control Data Corporation Boron or graphite reinforced voice coil and manufacturing process
GB2366474A (en) * 2000-09-01 2002-03-06 Schlumberger Ltd A geophone with a magnet and a coil concentrically arranged around a central pole

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963882A (en) * 1975-03-14 1976-06-15 Control Data Corporation Boron or graphite reinforced voice coil and manufacturing process
GB2366474A (en) * 2000-09-01 2002-03-06 Schlumberger Ltd A geophone with a magnet and a coil concentrically arranged around a central pole
GB2366474B (en) * 2000-09-01 2005-02-16 Schlumberger Ltd Geophones
AU2001280015B2 (en) * 2000-09-01 2006-02-02 Schlumberger Technology B.V. Vibration Sensor and Method of Seismic Surveying
US7099235B2 (en) 2000-09-01 2006-08-29 Schlumberger Technology Corporation Geophone and method of manufacturing a geophone

Also Published As

Publication number Publication date
FR730280A (fr) 1932-08-10
BE385854A (enrdf_load_stackoverflow)
NL34769C (enrdf_load_stackoverflow)

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