GB497692A - Improvements in and relating to diaphragms for loudspeakers - Google Patents

Improvements in and relating to diaphragms for loudspeakers

Info

Publication number
GB497692A
GB497692A GB26819/37A GB2681937A GB497692A GB 497692 A GB497692 A GB 497692A GB 26819/37 A GB26819/37 A GB 26819/37A GB 2681937 A GB2681937 A GB 2681937A GB 497692 A GB497692 A GB 497692A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
speech
coil
flange
diaphragm portion
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
GB26819/37A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB497692A publication Critical patent/GB497692A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

497,692. Diaphragms. MARGUERAT, R., and CHEVRIER, M. Oct. 4, 1937, No. 26819. Convention date, Oct. 8, 1936. [Class 40 (iv)] In a loud-speaker diaphragm comprising a diaphragm portion proper and a flange 2 for carrying a speech-coil moulded therewith, a shoulder 9 is provided between the diaphragm portion and the speech-coil flange to constitute an abutment for the location of a spider. The diaphragm has a flat peripheral portion 1 and a number of concentric corrugations 5 and is preferably made by the processes and apparatus described in Specifications 440,543 and 440,544, [both in Group V]. The Specification as open to inspection under Sect. 91 includes a construction, Fig. 3 (Cancelled), in which the centring spider 12 has an integral flange 11 carrying the speech-coil and a cylindrical portion 13 into which is fitted a cylindrical extension 2<1> of the diaphragm portion. The thickness of the diaphragm portion may decrease gradually from the apex to the periphery. This subject-matter does not appear in the Specification as accepted.
GB26819/37A 1936-10-08 1937-10-04 Improvements in and relating to diaphragms for loudspeakers Expired GB497692A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR497692X 1936-10-08

Publications (1)

Publication Number Publication Date
GB497692A true GB497692A (en) 1938-12-23

Family

ID=8904961

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26819/37A Expired GB497692A (en) 1936-10-08 1937-10-04 Improvements in and relating to diaphragms for loudspeakers

Country Status (1)

Country Link
GB (1) GB497692A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1159027B (en) * 1960-06-21 1963-12-12 Sennheiser Electronic Membrane for electroacoustic transducer
GB2425433A (en) * 2005-04-19 2006-10-25 Merry Electronics Co Ltd Power-tolerant assembly of sound ring and loudspeaker diaphragm

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1159027B (en) * 1960-06-21 1963-12-12 Sennheiser Electronic Membrane for electroacoustic transducer
GB2425433A (en) * 2005-04-19 2006-10-25 Merry Electronics Co Ltd Power-tolerant assembly of sound ring and loudspeaker diaphragm

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