GB263477A - Loud speakers - Google Patents

Loud speakers

Info

Publication number
GB263477A
GB263477A GB9732/26A GB973226A GB263477A GB 263477 A GB263477 A GB 263477A GB 9732/26 A GB9732/26 A GB 9732/26A GB 973226 A GB973226 A GB 973226A GB 263477 A GB263477 A GB 263477A
Authority
GB
United Kingdom
Prior art keywords
board
diaphragm
cone
base
sounding board
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
GB9732/26A
Other languages
English (en)
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.)
HOPKINS CORP
Original Assignee
HOPKINS CORP
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 HOPKINS CORP filed Critical HOPKINS CORP
Publication of GB263477A publication Critical patent/GB263477A/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
    • 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
GB9732/26A 1925-12-22 1926-04-13 Loud speakers Expired GB263477A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US263477XA 1925-12-22 1925-12-22

Publications (1)

Publication Number Publication Date
GB263477A true GB263477A (en) 1927-07-13

Family

ID=21831299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9732/26A Expired GB263477A (en) 1925-12-22 1926-04-13 Loud speakers

Country Status (5)

Country Link
US (1) US1730507A (fr)
BE (1) BE338782A (fr)
FR (1) FR616502A (fr)
GB (1) GB263477A (fr)
NL (1) NL20179C (fr)

Also Published As

Publication number Publication date
BE338782A (fr)
NL20179C (fr)
FR616502A (fr) 1927-02-03
US1730507A (en) 1929-10-08

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