FR600923A - Improvements in loudspeaker construction - Google Patents

Improvements in loudspeaker construction

Info

Publication number
FR600923A
FR600923A FR600923DA FR600923A FR 600923 A FR600923 A FR 600923A FR 600923D A FR600923D A FR 600923DA FR 600923 A FR600923 A FR 600923A
Authority
FR
France
Prior art keywords
loudspeaker construction
loudspeaker
construction
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR600923A publication Critical patent/FR600923A/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
    • 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
    • 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
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR600923D 1924-07-30 1925-07-20 Improvements in loudspeaker construction Expired FR600923A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US729009A US1913451A (en) 1924-07-30 1924-07-30 Acoustic apparatus

Publications (1)

Publication Number Publication Date
FR600923A true FR600923A (en) 1926-02-18

Family

ID=24929199

Family Applications (1)

Application Number Title Priority Date Filing Date
FR600923D Expired FR600923A (en) 1924-07-30 1925-07-20 Improvements in loudspeaker construction

Country Status (5)

Country Link
US (1) US1913451A (en)
DE (1) DE556082C (en)
FR (1) FR600923A (en)
GB (1) GB237878A (en)
NL (1) NL18435C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2662606A (en) * 1950-01-31 1953-12-15 Rca Corp Elliptical conoidal sound reproducing diaphragm

Also Published As

Publication number Publication date
DE556082C (en) 1932-08-04
GB237878A (en) 1926-07-22
NL18435C (en) 1928-08-15
US1913451A (en) 1933-06-13

Similar Documents

Publication Publication Date Title
FR584424A (en) Improvements in locknuts
FR567695A (en) Improvements in hearing devices
FR600923A (en) Improvements in loudspeaker construction
FR616685A (en) Improvements in shoe making
FR594985A (en) Improvements in loudspeakers
FR594986A (en) Improvements in loudspeakers
FR560799A (en) Improvements in locknuts
FR592895A (en) Frame
FR597450A (en) Improvements in shoe making
FR570719A (en) Improvements in winches
ES91153A1 (en) Improvements in speakers.
FR589458A (en) Improvements in the construction of desks
FR575269A (en) Improvements in compressors
FR580767A (en) Improvements in electromagnets
FR613224A (en) Improvements in welding
FR605648A (en) Improvements in shipbuilding
FR591102A (en) Improvements in talking machines
FR584952A (en) Improvements in the construction of propellers
FR605854A (en) Improvements in the construction of banjos
FR583869A (en) Frame
FR604889A (en) Improvements in secateurs
FR587123A (en) Improvements in bras
ES91462A1 (en) Improvements in espadrilles.
FR594146A (en) Improvements in soap making
FR582585A (en) Improvements made in the construction of coolers