[go: up one dir, main page]

GB1164307A - Magnets. - Google Patents

Magnets.

Info

Publication number
GB1164307A
GB1164307A GB52085/66A GB5208566A GB1164307A GB 1164307 A GB1164307 A GB 1164307A GB 52085/66 A GB52085/66 A GB 52085/66A GB 5208566 A GB5208566 A GB 5208566A GB 1164307 A GB1164307 A GB 1164307A
Authority
GB
United Kingdom
Prior art keywords
return path
division
moving coil
magnet
coil
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
GB52085/66A
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
Publication of GB1164307A publication Critical patent/GB1164307A/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
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/003—Methods and devices for magnetising permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0273—Magnetic circuits with PM for magnetic field generation
    • H01F7/0289—Transducers, loudspeakers, moving coil arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

1,164,307. Moving coil loudspeakers. GENERAL ELECTRIC CO. 21 Nov., 1966 [21 Dec., 1965], No. 52085/66. Heading H4J. [Also in Division H1] A moving coil loudspeaker, Fig. 3, comprises a cylindrical magnet 1 having its poles encircling the opposite ends of its curved surface (see Division H1) mounted with its lower pole in contact with a magnetic return path 12 which is formed as an integral part of the basket 11. The coil 15 is suspended in the air gap between the upper pole of magnet 1 and the return path 12.
GB52085/66A 1965-12-21 1966-11-21 Magnets. Expired GB1164307A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51540165A 1965-12-21 1965-12-21

Publications (1)

Publication Number Publication Date
GB1164307A true GB1164307A (en) 1969-09-17

Family

ID=24051207

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52085/66A Expired GB1164307A (en) 1965-12-21 1966-11-21 Magnets.

Country Status (6)

Country Link
US (1) US3440364A (en)
BE (1) BE691586A (en)
DE (1) DE1272374C2 (en)
FR (1) FR1505923A (en)
GB (1) GB1164307A (en)
NL (1) NL147566B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2218879A (en) * 1988-05-18 1989-11-22 Wang Shen Ting A yoke in a cone speaker
WO2004012068A1 (en) * 2002-07-25 2004-02-05 Sonion Horsens A/S Mobile handset and assembly having multi-loudspeaker system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5235294B2 (en) * 1971-12-17 1977-09-08
US3971054A (en) * 1974-07-12 1976-07-20 Motorola, Inc. Method and apparatus for magnetizing permanent magnet in magnetic structure
DE2744333A1 (en) * 1977-10-01 1979-04-05 Krupp Gmbh MAGNETIC CORE
RU2741475C1 (en) * 2020-02-03 2021-01-26 Андрей Викторович Новгородов Stepped structure of upper mounting part of basket for medium-frequency and low-frequency loudspeakers with cone shaped diffuser

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2188091A (en) * 1934-07-11 1940-01-23 Jr Max Baermann Process for making permanent magnets and products thereof
US2224954A (en) * 1936-04-09 1940-12-17 Eisele Albert Magnet
US3183398A (en) * 1960-08-04 1965-05-11 Raytheon Co Beam focusing magnet
US3276922A (en) * 1964-04-28 1966-10-04 Robert S Sery Method of producing magnetic cores by using electron irradiation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2218879A (en) * 1988-05-18 1989-11-22 Wang Shen Ting A yoke in a cone speaker
WO2004012068A1 (en) * 2002-07-25 2004-02-05 Sonion Horsens A/S Mobile handset and assembly having multi-loudspeaker system

Also Published As

Publication number Publication date
DE1272374B (en) 1968-07-11
DE1272374C2 (en) 1973-12-20
NL147566B (en) 1975-10-15
FR1505923A (en) 1967-12-15
NL6616888A (en) 1967-06-22
BE691586A (en) 1967-06-21
US3440364A (en) 1969-04-22

Similar Documents

Publication Publication Date Title
ES252608A1 (en) Magnet system having little stray
ES409986A1 (en) Electro-acoustic armature transducer
GB1314197A (en) Dual output ac transducer
GB1178079A (en) Improvements in or relating to Electromagnetic Separators
GB1164307A (en) Magnets.
GB1460744A (en) Loud speakers of the moving coil type
GB1409789A (en) Magnet assembly
JPS5226498A (en) Permanent magnet and its manufactured process
GB1468313A (en) Electromagnetically operable switch arrangement
FR2267649A1 (en) Permanent magnet electric machines - has pole pieces with parts having different remanence and coercive fields
GB672467A (en) Improvements in and relating to sound reproducing devices
GB894184A (en) An electrical contact device
JPS5634298A (en) Magnetic circuit for speaker
GB1256336A (en) Electrical relay
JPS524228A (en) Non-directional dynamic type electric sound convertor
GB1057780A (en) Electromagnetic relays
GB1219450A (en) Permanent magnetic mounting device
GB964409A (en) Improvements in or relating to electromagnetic switches
GB1418444A (en) Loudspeaker assembly
JPS5799714A (en) Polarized electromagnet
JPS5723396A (en) Field system device
GB1145865A (en) Improvements in or relating to gramophone pick-up arms
GB1213962A (en) Turn-off permanent magnet
GB1002128A (en) Improvements in and relating to electric-acoustic transducers
GB923537A (en) Improvements in and relating to permanent magnets

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees