BE469578A - - Google Patents

Info

Publication number
BE469578A
BE469578A BE469578DA BE469578A BE 469578 A BE469578 A BE 469578A BE 469578D A BE469578D A BE 469578DA BE 469578 A BE469578 A BE 469578A
Authority
BE
Belgium
Application number
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.)
Publication of BE469578A publication Critical patent/BE469578A/xx

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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
BE469578D 1945-11-30 BE469578A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US632065A US2501032A (en) 1945-11-30 1945-11-30 Permanent magnet assembly for electrodynamic loud-speakers

Publications (1)

Publication Number Publication Date
BE469578A true BE469578A (fr)

Family

ID=24533932

Family Applications (1)

Application Number Title Priority Date Filing Date
BE469578D BE469578A (fr) 1945-11-30

Country Status (3)

Country Link
US (1) US2501032A (fr)
BE (1) BE469578A (fr)
ES (1) ES175452A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB625591A (en) * 1947-03-04 1949-06-30 Paul Gustavus Adolphus Helmuth Improvements in magnets
US2604551A (en) * 1947-10-02 1952-07-22 Magnavox Australia Pty Ltd Magnetic unit with magnetically positioned pole piece for loudspeakers
US2772381A (en) * 1951-06-25 1956-11-27 Swing A Way Mfg Company Magnetic lid lifter for can openers
US2761913A (en) * 1953-02-18 1956-09-04 Gen Dynamics Corp Loudspeaker
US2964597A (en) * 1954-12-10 1960-12-13 Rca Corp Loudspeaker magnetic field structure
US3092694A (en) * 1959-02-16 1963-06-04 Rca Corp Loudspeaker
US3106670A (en) * 1960-04-21 1963-10-08 Rca Corp Magnetic field structure for loudspeakers
US3801943A (en) * 1971-06-16 1974-04-02 J Bertagni Electoacoustic transducers and electromagnetic assembly therefor
US3874665A (en) * 1971-10-05 1975-04-01 Mcculloch Corp Ball putting cup and method of ejecting ball from same
USRE32785E (en) * 1983-10-19 1988-11-15 Sanden Corporation Audio-frequency electromechanical vibrator
US4635287A (en) * 1983-10-19 1987-01-06 Mutsuo Hirano Audio-frequency electromechanical vibrator
US4799266A (en) * 1986-11-25 1989-01-17 Kabushiki Kaisha Kenwood Electroacoustic converter
US7031490B2 (en) 2002-03-26 2006-04-18 T C Sounds Inc. Speaker driver with detachable motor and basket

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1811367A (en) * 1929-03-27 1931-06-23 Magnavox Co Loud speaker
US1864809A (en) * 1930-01-08 1932-06-28 Magnavox Co Loud speaker
USRE22017E (en) * 1931-01-05 1942-02-03 Acoustic device
GB372809A (en) * 1931-02-04 1932-05-04 Edgar Allen & Company Ltd Improvements in or relating to permanent magnets
US1847702A (en) * 1931-05-02 1932-03-01 Bell Telephone Labor Inc Sound translating device
GB389898A (en) * 1931-11-03 1933-03-30 Darwins Ltd Improvements in or relating to permanent magnets
GB397617A (en) * 1932-05-13 1933-08-31 Everett Ross Dempster Loud speakers
GB412552A (en) * 1932-12-21 1934-06-21 Everett Ross Dempster Improvements in or relating to loud speakers
BE414989A (fr) * 1935-04-13
FR827276A (fr) * 1937-01-07 1938-04-22 Perfectionnements aux haut-parleurs électrodynamiques
US2312238A (en) * 1938-01-27 1943-02-23 Rca Corp Dynamic loud-speaker
GB552328A (en) * 1941-12-04 1943-04-01 Reslo Sound Equipment Ltd Improvements in or relating to loud speakers and the like
US2395166A (en) * 1942-12-24 1946-02-19 Astatic Corp Transducer

Also Published As

Publication number Publication date
US2501032A (en) 1950-03-21
ES175452A1 (es) 1946-12-01

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