FR26807E - Apparatus for producing sound, such as an electromagnetic telephone receiver or transmitter - Google Patents

Apparatus for producing sound, such as an electromagnetic telephone receiver or transmitter

Info

Publication number
FR26807E
FR26807E FR26807DA FR26807E FR 26807 E FR26807 E FR 26807E FR 26807D A FR26807D A FR 26807DA FR 26807 E FR26807 E FR 26807E
Authority
FR
France
Prior art keywords
transmitter
telephone receiver
producing sound
electromagnetic telephone
electromagnetic
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.)
Societe des Etablissements Gaumont
Original Assignee
Societe des Etablissements Gaumont
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 Societe des Etablissements Gaumont filed Critical Societe des Etablissements Gaumont
Application granted granted Critical
Publication of FR26807E publication Critical patent/FR26807E/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
    • H04R9/047—Construction in which the windings of the moving coil lay in the same plane
    • 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
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
FR26807D 1922-02-17 1922-07-05 Apparatus for producing sound, such as an electromagnetic telephone receiver or transmitter Expired FR26807E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR558037T 1922-02-17

Publications (1)

Publication Number Publication Date
FR26807E true FR26807E (en) 1924-03-15

Family

ID=31898014

Family Applications (2)

Application Number Title Priority Date Filing Date
FR558037D Expired FR558037A (en) 1922-02-17 1922-02-17 Apparatus for producing sound, such as an electromagnetic telephone receiver or transmitter
FR26807D Expired FR26807E (en) 1922-02-17 1922-07-05 Apparatus for producing sound, such as an electromagnetic telephone receiver or transmitter

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR558037D Expired FR558037A (en) 1922-02-17 1922-02-17 Apparatus for producing sound, such as an electromagnetic telephone receiver or transmitter

Country Status (5)

Country Link
US (2) US1523262A (en)
DE (2) DE394012C (en)
FR (2) FR558037A (en)
GB (2) GB193339A (en)
NL (1) NL12262C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3141071A (en) * 1960-07-18 1964-07-14 Rosen Alfred H Full range electroacoustic transducers
GB1563511A (en) * 1976-03-19 1980-03-26 Harwood H Diaphragms for electroacoustic transducers
NL8102572A (en) * 1981-05-26 1982-12-16 Philips Nv BAND TYPE ELECTROACOUSTIC CONVERTER WITH LOW DISTORTION AND IMPROVED SENSITIVITY.

Also Published As

Publication number Publication date
FR558037A (en) 1923-08-20
US1538319A (en) 1925-05-19
DE403728C (en) 1924-10-08
DE394012C (en) 1924-04-11
NL12262C (en) 1924-12-15
US1523262A (en) 1925-01-13
GB193339A (en) 1923-02-22
GB200490A (en) 1924-07-10

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