BE359759R - Perfectionnements aux haut-parleurs - Google Patents

Perfectionnements aux haut-parleurs

Info

Publication number
BE359759R
BE359759R BE359759A BE359759A BE359759R BE 359759 R BE359759 R BE 359759R BE 359759 A BE359759 A BE 359759A BE 359759 A BE359759 A BE 359759A BE 359759 R BE359759 R BE 359759R
Authority
BE
Belgium
Prior art keywords
enhancements
loudspeaker
loudspeaker enhancements
Prior art date
Application number
BE359759A
Other languages
English (en)
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 US154814A external-priority patent/US1713210A/en
Priority claimed from US164620A external-priority patent/US1689513A/en
Priority claimed from US269519A external-priority patent/US1754044A/en
Application filed filed Critical
Application granted granted Critical
Publication of BE359759R publication Critical patent/BE359759R/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00—Methods or devices for placing filling-up materials in underground workings
    • E21F15/06—Filling-up mechanically
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Mining & Mineral Resources (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
BE359759A 1926-12-14 1929-04-11 Perfectionnements aux haut-parleurs BE359759R (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US154814A US1713210A (en) 1926-12-14 1926-12-14 Cone-type loud-speaker
US164620A US1689513A (en) 1927-01-29 1927-01-29 Sound-reproducing device
US269519A US1754044A (en) 1928-04-12 1928-04-12 Sound-producing device

Publications (1)

Publication Number Publication Date
BE359759R true BE359759R (fr) 1929-05-31

Family

ID=27387645

Family Applications (1)

Application Number Title Priority Date Filing Date
BE359759A BE359759R (fr) 1926-12-14 1929-04-11 Perfectionnements aux haut-parleurs

Country Status (1)

Country Link
BE (1) BE359759R (fr)

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