GB939159A - Improvements in high frequency loudspeakers - Google Patents

Improvements in high frequency loudspeakers

Info

Publication number
GB939159A
GB939159A GB12453/60A GB1245360A GB939159A GB 939159 A GB939159 A GB 939159A GB 12453/60 A GB12453/60 A GB 12453/60A GB 1245360 A GB1245360 A GB 1245360A GB 939159 A GB939159 A GB 939159A
Authority
GB
United Kingdom
Prior art keywords
coil
loud
pieces
elastic material
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
GB12453/60A
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.)
A R Inc
Original Assignee
A R Inc
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 A R Inc filed Critical A R Inc
Publication of GB939159A publication Critical patent/GB939159A/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
    • 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

Landscapes

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

Abstract

939,159. Loud-speakers; diaphragms. A.R. Inc. April 7, 1960 [May 1, 1959], No. 12453/60. Class 40 (4). In a moving coil loud-speaker for high frequency reproduction, the coil 17, to which a dome shaped diaphragm 16 is attached, is suspended in the air gap 18 of the magnet structure by elastic material adhesively secured to the coil and to the structure. Spaced notches 21 in the rim 12a of a top plate 12 are filled with pieces 22 of elastic foam material. The material may be initially uncured and adhesion is effected by heating the material to about 300‹ F. when it foams and adheres to the coil 17 and top plate 12; for pre-cured material a cement may be used as the adhesive. The pieces of elastic material 22 may be dispensed with (Fig. 3, not shown) and the air gap filled completely with a highly elastic material e.g. butyl rubber, or butyl rubber 27 (Fig. 4) may be used to supplement the pieces of elastic material 22. Pads 23, 24 of sound absorbent material e.g. glass wool, may fill the spaces inside the magnet structure. The diaphragm 16 may be made of two layers of cloth bonded together with their weaves at 45 degrees to one another. Dimensions of, and some results obtained with, the loud-speaker are given in the Specification.
GB12453/60A 1959-05-01 1960-04-07 Improvements in high frequency loudspeakers Expired GB939159A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US810421A US3033945A (en) 1959-05-01 1959-05-01 Voice coil and diaphragm support for high frequency loud-speaker

Publications (1)

Publication Number Publication Date
GB939159A true GB939159A (en) 1963-10-09

Family

ID=25203811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12453/60A Expired GB939159A (en) 1959-05-01 1960-04-07 Improvements in high frequency loudspeakers

Country Status (2)

Country Link
US (1) US3033945A (en)
GB (1) GB939159A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50100535U (en) * 1974-01-18 1975-08-20
US12114144B2 (en) 2020-03-20 2024-10-08 Pss Belgium Nv Loudspeaker

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258543A (en) * 1962-10-01 1966-06-28 Electro Voice Dynamic microphone
USRE31228E (en) * 1967-12-04 1983-05-03 Bose Corporation Loudspeaker system
US3496307A (en) * 1967-12-30 1970-02-17 Nippon Musical Instruments Mfg Loudspeaker
GB1380914A (en) * 1971-01-04 1975-01-15 Rola Celestion Ltd Diaphragm assemblies for electro-acoustic transducers
US4010334A (en) * 1975-01-27 1977-03-01 Demeter James K Moving magnet contact acoustic transducer
US4410768A (en) * 1980-07-23 1983-10-18 Nippon Gakki Seizo Kabushiki Kaisha Electro-acoustic transducer
DE3147145C2 (en) * 1981-11-27 1983-10-13 Siemens AG, 1000 Berlin und 8000 München Method for generating a speed-proportional voltage and circuit arrangement for carrying out the method
US4727583A (en) * 1986-10-28 1988-02-23 Motorola, Inc. Telephone transducer with improved frequency response
US4914750A (en) * 1987-07-13 1990-04-03 Avm Hess, Inc. Sound transducer
WO1994016536A1 (en) * 1993-01-06 1994-07-21 Velodyne Acoustics, Inc. Speaker containing dual coil
JP3140895B2 (en) * 1993-10-08 2001-03-05 パイオニア株式会社 Speaker device
US9560452B2 (en) * 2007-07-25 2017-01-31 Lars Goller Cone tweeter membrane
WO2009142091A1 (en) * 2008-05-21 2009-11-26 ジーナスオーディオ株式会社 Speaker
USD865030S1 (en) 2010-04-09 2019-10-29 Sony Corporation Camera
USD666458S1 (en) * 2010-09-10 2012-09-04 Seana L. Montgomery Bowl with utensil retention feature
US8695838B1 (en) 2012-06-06 2014-04-15 Seana L. Montgomery Bowl with utensil holder
USD917413S1 (en) * 2019-08-16 2021-04-27 Phinge Corporation Voice assisted digital interface device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT106394B (en) * 1924-08-01 1927-05-10 Siemens Ag Electrodynamic telephone.
GB271407A (en) * 1926-05-22 1927-12-15 Ets Lissements Gaumont Soc D Improvements in loud-speaking telephones
US1846351A (en) * 1930-06-13 1932-02-23 Murkham Leonard Walter Electrodynamic sound-reproducing device
US1962012A (en) * 1932-04-09 1934-06-05 Grassmann Peter Electrodynamic loud speaker
GB465795A (en) * 1935-11-08 1937-05-10 Cinaudagraph Corp Improvements in electro-acoustical reproducers
US2235654A (en) * 1937-12-31 1941-03-18 Rca Corp Sound transducer
US2238741A (en) * 1938-02-22 1941-04-15 Gen Electric Electrodynamic transducer
FR1126904A (en) * 1949-10-11 1956-12-04 O S A E Improvements in the construction of loudspeakers
DE899674C (en) * 1951-08-28 1953-12-14 Siemens Ag Electrodynamic sound generator, preferably for high frequencies

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50100535U (en) * 1974-01-18 1975-08-20
JPS5530075Y2 (en) * 1974-01-18 1980-07-17
US12114144B2 (en) 2020-03-20 2024-10-08 Pss Belgium Nv Loudspeaker

Also Published As

Publication number Publication date
US3033945A (en) 1962-05-08

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