CA1029465A - Loudspeaker - Google Patents

Loudspeaker

Info

Publication number
CA1029465A
CA1029465A CA218,712A CA218712A CA1029465A CA 1029465 A CA1029465 A CA 1029465A CA 218712 A CA218712 A CA 218712A CA 1029465 A CA1029465 A CA 1029465A
Authority
CA
Canada
Prior art keywords
loudspeaker
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
CA218,712A
Other languages
French (fr)
Other versions
CA218712S (en
Inventor
Rollin J. Parker
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of CA1029465A publication Critical patent/CA1029465A/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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
CA218,712A 1974-03-15 1975-01-27 Loudspeaker Expired CA1029465A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US451482A US3917914A (en) 1974-03-15 1974-03-15 Loudspeaker

Publications (1)

Publication Number Publication Date
CA1029465A true CA1029465A (en) 1978-04-11

Family

ID=23792395

Family Applications (1)

Application Number Title Priority Date Filing Date
CA218,712A Expired CA1029465A (en) 1974-03-15 1975-01-27 Loudspeaker

Country Status (2)

Country Link
US (1) US3917914A (en)
CA (1) CA1029465A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356882A (en) * 1981-01-15 1982-11-02 Allen James C Device for enlarging the effective volume of a loudspeaker enclosure
JP2701279B2 (en) * 1987-12-28 1998-01-21 ヤマハ株式会社 Sound equipment
JP2605321B2 (en) * 1987-12-28 1997-04-30 ヤマハ株式会社 Sound equipment
US5548657A (en) * 1988-05-09 1996-08-20 Kef Audio (Uk) Limited Compound loudspeaker drive unit
GB2259222A (en) * 1991-08-30 1993-03-03 Marconi Gec Ltd Underwater acoustic projector
US5390257A (en) * 1992-06-05 1995-02-14 Oslac; Michael J. Light-weight speaker system
BE1008080A3 (en) * 1994-02-22 1996-01-09 Fabrilec Naamloze Vennootschap Device for the reflection of at least one spoken message
US6647122B1 (en) 1998-09-28 2003-11-11 Pioneer Electronics Technology, Inc. Loudspeaker drive unit
CN1158896C (en) * 1999-03-10 2004-07-21 皇家菲利浦电子有限公司 Apparatus including an electroacoustic transducer having terminal contacts which extend in the direction of the transducer axis and including a printed circuit board having mating contacts
CN1225076C (en) * 1999-04-13 2005-10-26 松下电器产业株式会社 Linear motor
US6738490B2 (en) 2000-01-11 2004-05-18 Eugene P. Brandt Loudspeaker with independent magnetic dampening and excursion control
TW588222B (en) * 2000-02-10 2004-05-21 Asml Netherlands Bv Cooling of voice coil motors in lithographic projection apparatus
WO2005027570A1 (en) * 2003-09-16 2005-03-24 Koninklijke Philips Electronics N.V. High efficiency audio transducer
IT1399082B1 (en) 2010-03-25 2013-04-05 Claudio Lastrucci MOBILE MAGNETIC ELECTRO-MECHANICAL CONVERSION SYSTEM; ACOUSTIC DIFFUSER INCLUDING THIS SYSTEM AND A MOBILE ORGAN GENERATING ACOUSTIC WAVES.
IT201800003406A1 (en) * 2018-03-09 2019-09-09 Powersoft S P A Platform vibration control system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2110153A (en) * 1934-10-19 1938-03-08 Philips Nv Magnetic system
US2537723A (en) * 1946-11-22 1951-01-09 Truvox Engineering Company Ltd Electromagnetic transducer
US2951190A (en) * 1954-10-28 1960-08-30 Baermann Max Electro-mechanical transformer

Also Published As

Publication number Publication date
US3917914A (en) 1975-11-04

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