FR653609A - Improvements to sound-producing devices - Google Patents

Improvements to sound-producing devices

Info

Publication number
FR653609A
FR653609A FR653609DA FR653609A FR 653609 A FR653609 A FR 653609A FR 653609D A FR653609D A FR 653609DA FR 653609 A FR653609 A FR 653609A
Authority
FR
France
Prior art keywords
sound
producing devices
producing
devices
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR653609A publication Critical patent/FR653609A/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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Diaphragms And Bellows (AREA)
FR653609D 1927-05-18 1928-04-30 Improvements to sound-producing devices Expired FR653609A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US192469A US1722213A (en) 1927-05-18 1927-05-18 Sound-producing apparatus

Publications (1)

Publication Number Publication Date
FR653609A true FR653609A (en) 1929-03-23

Family

ID=22709797

Family Applications (1)

Application Number Title Priority Date Filing Date
FR653609D Expired FR653609A (en) 1927-05-18 1928-04-30 Improvements to sound-producing devices

Country Status (3)

Country Link
US (1) US1722213A (en)
FR (1) FR653609A (en)
GB (1) GB290635A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116684797B (en) * 2023-08-03 2023-11-21 深圳市瀚宏数码科技有限公司 Pressure relief structure of micro loudspeaker box

Also Published As

Publication number Publication date
GB290635A (en) 1928-11-22
US1722213A (en) 1929-07-23

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