GB527026A - Improvements in or relating to loud-speakers - Google Patents

Improvements in or relating to loud-speakers

Info

Publication number
GB527026A
GB527026A GB968939A GB968939A GB527026A GB 527026 A GB527026 A GB 527026A GB 968939 A GB968939 A GB 968939A GB 968939 A GB968939 A GB 968939A GB 527026 A GB527026 A GB 527026A
Authority
GB
United Kingdom
Prior art keywords
loud
diaphragm
speakers
relating
fixed
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
GB968939A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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
Priority to BE441017D priority Critical patent/BE441017A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB968939A priority patent/GB527026A/en
Publication of GB527026A publication Critical patent/GB527026A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers

Abstract

527,026. Loud-speakers. STANDARD TELEPHONES & CABLES, Ltd. (Visschers, P. A. J.). March 28, 1939, No. 9689. [Class 40 (iv)] A moving-coil loud-speaker has a small, stiff, dust-excluding diaphragm 5 flexibly fixed to the main diaphragm on its concave side. The diaphragm 5 has an annular corrugation 6 and a peripheral annulus 7 by which it is fixed to the main diaphragm.
GB968939A 1939-03-28 1939-03-28 Improvements in or relating to loud-speakers Expired GB527026A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE441017D BE441017A (en) 1939-03-28
GB968939A GB527026A (en) 1939-03-28 1939-03-28 Improvements in or relating to loud-speakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB968939A GB527026A (en) 1939-03-28 1939-03-28 Improvements in or relating to loud-speakers

Publications (1)

Publication Number Publication Date
GB527026A true GB527026A (en) 1940-10-01

Family

ID=9876857

Family Applications (1)

Application Number Title Priority Date Filing Date
GB968939A Expired GB527026A (en) 1939-03-28 1939-03-28 Improvements in or relating to loud-speakers

Country Status (2)

Country Link
BE (1) BE441017A (en)
GB (1) GB527026A (en)

Also Published As

Publication number Publication date
BE441017A (en)

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