FR685304A - Support device for acoustic membranes - Google Patents

Support device for acoustic membranes

Info

Publication number
FR685304A
FR685304A FR685304DA FR685304A FR 685304 A FR685304 A FR 685304A FR 685304D A FR685304D A FR 685304DA FR 685304 A FR685304 A FR 685304A
Authority
FR
France
Prior art keywords
support device
acoustic membranes
membranes
acoustic
support
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.)
Parlophone Records Ltd
Original Assignee
Gramophone Co Ltd
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 Gramophone Co Ltd filed Critical Gramophone Co Ltd
Application granted granted Critical
Publication of FR685304A publication Critical patent/FR685304A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Electromagnets (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR685304D 1929-02-13 1929-11-21 Support device for acoustic membranes Expired FR685304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4882/29A GB324826A (en) 1929-02-13 1929-02-13 Supporting means for acoustic diaphragms

Publications (1)

Publication Number Publication Date
FR685304A true FR685304A (en) 1930-07-09

Family

ID=9785602

Family Applications (1)

Application Number Title Priority Date Filing Date
FR685304D Expired FR685304A (en) 1929-02-13 1929-11-21 Support device for acoustic membranes

Country Status (5)

Country Link
US (1) US1831235A (en)
DE (1) DE552016C (en)
FR (1) FR685304A (en)
GB (1) GB324826A (en)
NL (1) NL28294C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2469773A (en) * 1934-06-04 1949-05-10 Jensen Mfg Company Loud-speaker diaphragm support member
GB584354A (en) * 1944-12-08 1947-01-13 Harry Claude Willson Improvements relating to electro-dynamic reproducers or loud-speaking telephones of the moving coil type
DE1003265B (en) * 1952-11-07 1957-02-28 Walter Kirbach Centering and holding parts of loudspeaker diaphragms and similar acoustic diaphragms
US4102221A (en) * 1976-07-19 1978-07-25 General Electric Company Cross-ply composite flywheel
US4207778A (en) * 1976-07-19 1980-06-17 General Electric Company Reinforced cross-ply composite flywheel and method for making same
US6938726B1 (en) 2001-10-16 2005-09-06 Mitek Corporation Field rebuildable low frequency loudspeaker driver having a removable diaphragm assembly, parts kit and method for rebuilding a loudspeaker driver in the field

Also Published As

Publication number Publication date
US1831235A (en) 1931-11-10
DE552016C (en) 1932-06-08
NL28294C (en)
GB324826A (en) 1930-02-06

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