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.)
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 NVfiledCriticalPhilips Gloeilampenfabrieken NV
Application grantedgrantedCritical
Publication of FR715482ApublicationCriticalpatent/FR715482A/fr
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
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)
FR715482D1930-05-101931-04-15Dispositif électrodynamique destiné à transformer des oscillations électriques en vibrations sonores et inversement
ExpiredFR715482A
(fr)
Organe de support et de centrage de la bobine d'un dispositif électrodynamique, permettant de transformer des oscillations électriques en oscillations acoustiques ou inversement
Pièce servant à supporter et à centrer la partie mobile d'un dispositif destiné à transformer des oscillations électriquès en vibrations acoustiques ou inversement