GB283211A - Loud speaker - Google Patents

Loud speaker

Info

Publication number
GB283211A
GB283211A GB32/28A GB3228A GB283211A GB 283211 A GB283211 A GB 283211A GB 32/28 A GB32/28 A GB 32/28A GB 3228 A GB3228 A GB 3228A GB 283211 A GB283211 A GB 283211A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
sound
board
hopkins
diaphragms
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
GB32/28A
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 GB283211A publication Critical patent/GB283211A/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
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
GB32/28A 1927-01-07 1928-01-02 Loud speaker Expired GB283211A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US159554A US1763054A (en) 1927-01-07 1927-01-07 Loud-speaker

Publications (1)

Publication Number Publication Date
GB283211A true GB283211A (en) 1928-06-28

Family

ID=22573035

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32/28A Expired GB283211A (en) 1927-01-07 1928-01-02 Loud speaker

Country Status (4)

Country Link
US (1) US1763054A (en:Method)
BE (1) BE347740A (en:Method)
FR (1) FR646684A (en:Method)
GB (1) GB283211A (en:Method)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114429A (en) * 1961-01-16 1963-12-17 Hoffman Electronics Corp Loudspeaker

Also Published As

Publication number Publication date
BE347740A (en:Method)
US1763054A (en) 1930-06-10
FR646684A (fr) 1928-11-14

Similar Documents

Publication Publication Date Title
GB283211A (en) Loud speaker
GB284343A (en) Improvements in or connected with souud reproducing devices
US1811638A (en) Earphone transmitter
GB290299A (en) Improved diaphragm for loudspeakers
GB303837A (en) Improvements in or connected with sound reproducing devices
GB283210A (en) Loud speaker
GB283212A (en) Loud speaker
GB239245A (en) Improvements in or relating to sound reproducing devices
US1773605A (en) Loud-speaker
GB293414A (en) Improvements relating to loud-speakers
US1661006A (en) Telephone transmitter
GB271059A (en) Improvements in or relating to vibrating members for loud speakers
US1046554A (en) Telephone-receiver.
GB303189A (en) Improvements in or relating to acoustic instruments
GB611329A (en) Improvements in or relating to acoustic instruments such as loud speakers and directional microphones
GB421012A (en) Improvements relating to sound amplifying devices
GB237878A (en) Improvements in diaphragms for acoustic apparatus
GB261426A (en) Cone type loud speaker
GB263477A (en) Loud speakers
GB304888A (en) Improvements in diaphragms for use in connection with gramophone sound boxes, loud speaking telephone receivers and for like purposes
GB497692A (en) Improvements in and relating to diaphragms for loudspeakers
GB276310A (en:Method)
GB248845A (en) Improvements in and relating to loud speakers for wireless telephony, and the like
GB256963A (en) Improvements in or relating to acoustic devices
GB384270A (en) Improvements in or relating to diaphragms for loud speakers, microphones, and the lik