GB1124830A - Improvements in or relating to electro-acoustic transducers such as telephone receivers - Google Patents

Improvements in or relating to electro-acoustic transducers such as telephone receivers

Info

Publication number
GB1124830A
GB1124830A GB2210666A GB2210666A GB1124830A GB 1124830 A GB1124830 A GB 1124830A GB 2210666 A GB2210666 A GB 2210666A GB 2210666 A GB2210666 A GB 2210666A GB 1124830 A GB1124830 A GB 1124830A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
armature
diaphragm
lever
casing
coupled
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
GB2210666A
Inventor
Ronald Ernest Charles Brown
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.)
Associated Electrical Ind Ltd
Original Assignee
Associated Electrical Ind Ltd
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

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00Transducers of moving-armature or moving-core type

Abstract

1,124,830. Moving armature transducers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 12 May, 1967 [18 May, 1966], No. 22106/66. Heading H4J. In a receiver " inset " or other electroacoustic transducer, an armature 11 (Fig. 3), associated with a permanent magnet 8 and a polepiece 9, is mounted in cantilever fashion and vibrates by flexing, and is coupled to a diaphragm 12 by a lever 13 that has the armature 11 and diaphragm 12 coupled to it on opposite sides of a fulcrum 14 about which it pivots or rocks. Preferably almost the whole of the total stiffness of the moving system is provided by the armature 11, the diaphragm 12 being extremely compliant. A thin, floating diaphragm 12 may be used but, as shown, the diaphragm 12 is secured to a casing 15 by the turned-over part of a centre-perforated guardplate 19. A clamping strap 17 and clamping screws 16 secure the magnet 8 and armature 11 to the casing 15. Alternatives.-The lever 6 (Fig. 2) extands away from the permanent magnet 1. Compliant armature 11A (Fig. 6) has at its unclamped end a right-angled portion in which is a V-shaped groove with which a pointed end of the lever 13A, on a pivot 20, operatively registers.
GB2210666A 1966-05-18 1966-05-18 Improvements in or relating to electro-acoustic transducers such as telephone receivers Expired GB1124830A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2210666A GB1124830A (en) 1966-05-18 1966-05-18 Improvements in or relating to electro-acoustic transducers such as telephone receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2210666A GB1124830A (en) 1966-05-18 1966-05-18 Improvements in or relating to electro-acoustic transducers such as telephone receivers

Publications (1)

Publication Number Publication Date
GB1124830A true true GB1124830A (en) 1968-08-21

Family

ID=10174000

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2210666A Expired GB1124830A (en) 1966-05-18 1966-05-18 Improvements in or relating to electro-acoustic transducers such as telephone receivers

Country Status (1)

Country Link
GB (1) GB1124830A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015134586A1 (en) * 2014-03-07 2015-09-11 Bose Corporation Levered loudspeakers
US9258648B2 (en) 2014-03-07 2016-02-09 Bose Corporation Levered loudspeakers
US9357279B2 (en) 2014-03-07 2016-05-31 Bose Corporation Elastomeric torsion bushings for levered loudspeakers
US9601969B2 (en) 2014-03-07 2017-03-21 Bose Corporation Inhibiting rocking of loads driven by plural levers
US9763013B2 (en) 2013-03-15 2017-09-12 Bose Corporation Moving magnet motors

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10028062B2 (en) 2013-03-15 2018-07-17 Bose Corporation Driving plural armatures with a common stator
US9763013B2 (en) 2013-03-15 2017-09-12 Bose Corporation Moving magnet motors
US9258648B2 (en) 2014-03-07 2016-02-09 Bose Corporation Levered loudspeakers
US9357279B2 (en) 2014-03-07 2016-05-31 Bose Corporation Elastomeric torsion bushings for levered loudspeakers
US9497549B2 (en) 2014-03-07 2016-11-15 Bose Corporation Levered loudspeakers
US9601969B2 (en) 2014-03-07 2017-03-21 Bose Corporation Inhibiting rocking of loads driven by plural levers
WO2015134586A1 (en) * 2014-03-07 2015-09-11 Bose Corporation Levered loudspeakers

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