FR698408A - Part used to support and center the moving part of a device intended to transform electric oscillations into acoustic vibrations or vice versa - Google Patents

Part used to support and center the moving part of a device intended to transform electric oscillations into acoustic vibrations or vice versa

Info

Publication number
FR698408A
FR698408A FR698408DA FR698408A FR 698408 A FR698408 A FR 698408A FR 698408D A FR698408D A FR 698408DA FR 698408 A FR698408 A FR 698408A
Authority
FR
France
Prior art keywords
center
support
vice versa
device intended
acoustic vibrations
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
Other languages
French (fr)
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
Application granted granted Critical
Publication of FR698408A publication Critical patent/FR698408A/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
FR698408D 1929-09-03 1930-07-04 Part used to support and center the moving part of a device intended to transform electric oscillations into acoustic vibrations or vice versa Expired FR698408A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1906066X 1929-09-03

Publications (1)

Publication Number Publication Date
FR698408A true FR698408A (en) 1931-01-30

Family

ID=19873278

Family Applications (1)

Application Number Title Priority Date Filing Date
FR698408D Expired FR698408A (en) 1929-09-03 1930-07-04 Part used to support and center the moving part of a device intended to transform electric oscillations into acoustic vibrations or vice versa

Country Status (2)

Country Link
US (1) US1906066A (en)
FR (1) FR698408A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556816A (en) * 1946-12-04 1951-06-12 Technicon Cardiograph Corp Polarized electromagnetic operator with damped coil armature
US2533249A (en) * 1947-02-04 1950-12-12 Sun Oil Co Seismic detector
US2712943A (en) * 1951-03-27 1955-07-12 Vm Corp Phonograph record adaptor
DE1192480B (en) * 1961-09-20 1965-05-06 Siemens Ag Coupling of two gear shafts, which can be engaged and disengaged, in a time relay driven by a synchronous motor with electromagnetic device for actuating the clutch
WO1995026616A1 (en) 1994-03-29 1995-10-05 Harman International Industries, Incorporated Method of manufacturing a loudspeaker spider

Also Published As

Publication number Publication date
US1906066A (en) 1933-04-25

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