FR2085287B1 - - Google Patents

Info

Publication number
FR2085287B1
FR2085287B1 FR7012431A FR7012431A FR2085287B1 FR 2085287 B1 FR2085287 B1 FR 2085287B1 FR 7012431 A FR7012431 A FR 7012431A FR 7012431 A FR7012431 A FR 7012431A FR 2085287 B1 FR2085287 B1 FR 2085287B1
Authority
FR
France
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
FR7012431A
Other languages
French (fr)
Other versions
FR2085287A1 (xx
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
Priority claimed from FR7002431A external-priority patent/FR2029455B1/fr
Application filed filed Critical
Priority to FR7012431A priority Critical patent/FR2085287B1/fr
Publication of FR2085287A1 publication Critical patent/FR2085287A1/fr
Application granted granted Critical
Publication of FR2085287B1 publication Critical patent/FR2085287B1/fr
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
    • 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
    • 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
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR7012431A 1970-01-23 1970-04-06 Expired FR2085287B1 (xx)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7012431A FR2085287B1 (xx) 1970-01-23 1970-04-06

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7002431A FR2029455B1 (xx) 1969-01-27 1970-01-23
FR7012431A FR2085287B1 (xx) 1970-01-23 1970-04-06

Publications (2)

Publication Number Publication Date
FR2085287A1 FR2085287A1 (xx) 1971-12-24
FR2085287B1 true FR2085287B1 (xx) 1977-01-21

Family

ID=26215511

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7012431A Expired FR2085287B1 (xx) 1970-01-23 1970-04-06

Country Status (1)

Country Link
FR (1) FR2085287B1 (xx)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983337A (en) * 1973-06-21 1976-09-28 Babbco, Ltd. Broad-band acoustic speaker
AU2342177A (en) * 1976-03-22 1978-09-21 Babbco Ltd Loudspeaker. ribbed cone and bearing supported voice coil

Also Published As

Publication number Publication date
FR2085287A1 (xx) 1971-12-24

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Legal Events

Date Code Title Description
ST Notification of lapse