FR776417A - Loud speaker - Google Patents

Loud speaker

Info

Publication number
FR776417A
FR776417A FR776417DA FR776417A FR 776417 A FR776417 A FR 776417A FR 776417D A FR776417D A FR 776417DA FR 776417 A FR776417 A FR 776417A
Authority
FR
France
Prior art keywords
loud speaker
loud
speaker
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.)
ROLA Co
Original Assignee
ROLA Co
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 ROLA Co filed Critical ROLA Co
Application granted granted Critical
Publication of FR776417A publication Critical patent/FR776417A/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
    • H04R9/06—Loudspeakers
    • 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
    • H04R9/025—Magnetic circuit
FR776417D 1934-02-28 1934-07-24 Loud speaker Expired FR776417A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US713327A US2261110A (en) 1934-02-28 1934-02-28 Loud-speaker

Publications (1)

Publication Number Publication Date
FR776417A true FR776417A (en) 1935-01-25

Family

ID=24865702

Family Applications (1)

Application Number Title Priority Date Filing Date
FR776417D Expired FR776417A (en) 1934-02-28 1934-07-24 Loud speaker

Country Status (3)

Country Link
US (1) US2261110A (en)
FR (1) FR776417A (en)
GB (1) GB426846A (en)

Families Citing this family (14)

* 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
US2429470A (en) * 1934-06-04 1947-10-21 Jensen Mfg Company Loud-speaker with pressure-equalized chamber system enclosing flux gap
US2475516A (en) * 1944-07-10 1949-07-05 Quam Nichols Company Support clamp for electrodynamic loud-speakers
US2524780A (en) * 1945-07-07 1950-10-10 Rola Company Inc Pole piece centering arrangement for permanent magnet electrodynamic loudspeakers
US2590439A (en) * 1948-05-12 1952-03-25 Star Electronics Inc Push-pull resistance type phonograph pickup
GB2055015B (en) * 1979-06-30 1984-01-04 Pioneer Electronic Corp Voice coil bobbin for a planar diaphragm
US6330340B1 (en) 1995-12-29 2001-12-11 Jl Audio, Inc. Loudspeaker with a diaphragm having integral vent bores
CA2245351A1 (en) * 1998-09-08 2000-03-08 The Canadian Loudspeaker Corporation Forced air cooling system
US6243479B1 (en) 1999-12-08 2001-06-05 Lucio Proni Loudspeaker having pole piece with integral vent bores
US6535613B1 (en) 1999-12-28 2003-03-18 Jl Audio, Inc. Air flow control device for loudspeaker
US6865281B1 (en) * 2000-09-28 2005-03-08 Jeff B. Jordan Liquid cooled speaker
US7715584B2 (en) * 2006-01-03 2010-05-11 Jl Audio, Inc. Loudspeaker with air deflector
US7804976B1 (en) 2006-10-10 2010-09-28 Wayne Parham Radiant cooler for loudspeakers
USD776086S1 (en) * 2014-04-23 2017-01-10 Martin Audio Limited Loudspeaker

Also Published As

Publication number Publication date
US2261110A (en) 1941-11-04
GB426846A (en) 1935-04-10

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