BE351188R - Perfectionnements aux haut-parleurs - Google Patents

Perfectionnements aux haut-parleurs

Info

Publication number
BE351188R
BE351188R BE351188A BE351188A BE351188R BE 351188 R BE351188 R BE 351188R BE 351188 A BE351188 A BE 351188A BE 351188 A BE351188 A BE 351188A BE 351188 R BE351188 R BE 351188R
Authority
BE
Belgium
Prior art keywords
enhancements
loudspeaker
loudspeaker enhancements
Prior art date
Application number
BE351188A
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 US194181A external-priority patent/US1833758A/en
Application filed filed Critical
Application granted granted Critical
Publication of BE351188R publication Critical patent/BE351188R/fr

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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • 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; DEAF-AID SETS; 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Mining & Mineral Resources (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Multimedia (AREA)
BE351188A 1926-12-14 1928-05-09 Perfectionnements aux haut-parleurs BE351188R (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
US194181A US1833758A (en) 1927-05-25 1927-05-25 Device for producing sound

Publications (1)

Publication Number Publication Date
BE351188R true BE351188R (fr) 1928-06-30

Family

ID=27387643

Family Applications (1)

Application Number Title Priority Date Filing Date
BE351188A BE351188R (fr) 1926-12-14 1928-05-09 Perfectionnements aux haut-parleurs

Country Status (1)

Country Link
BE (1) BE351188R (fr)

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