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 (enrdf_load_stackoverflow
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 (enrdf_load_stackoverflow)

Priority Applications (1)

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

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=26215511

Family Applications (1)

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

Country Status (1)

Country Link
FR (1) FR2085287B1 (enrdf_load_stackoverflow)

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 (enrdf_load_stackoverflow) 1971-12-24

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Legal Events

Date Code Title Description
ST Notification of lapse