GB403685A - Improvements in acoustic diaphragms and method of making the same - Google Patents

Improvements in acoustic diaphragms and method of making the same

Info

Publication number
GB403685A
GB403685A GB11651/32A GB1165132A GB403685A GB 403685 A GB403685 A GB 403685A GB 11651/32 A GB11651/32 A GB 11651/32A GB 1165132 A GB1165132 A GB 1165132A GB 403685 A GB403685 A GB 403685A
Authority
GB
United Kingdom
Prior art keywords
former
diaphragm
fibres
cone
class
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
GB11651/32A
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
Priority to US231409A priority Critical patent/US1872081A/en
Application filed by Individual filed Critical Individual
Priority to GB11651/32A priority patent/GB403685A/en
Priority to FR736005D priority patent/FR736005A/en
Publication of GB403685A publication Critical patent/GB403685A/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)

Abstract

403,685. Diaphragms. HAWLEY, J. B., 200, East Batavia Road, Geneva, Illinois, U.S.A. April 22, 1932, No. 11651. [Class 40 (iv).] A seamless acoustic diaphragm is formed from fibrous material by submerging a porous contoured former in a water bath of suspended fibres, such as pulp fibres, the fibres being caused to acerete, interlace and integrate on the surface of the former by forcing the water through the pores or apertures in the former. After such deposition, the former is raised from the bath and the wet blank on it removed, dried and suitably treated. The Figures show suitable forms of diaphragm, those shown in Figs. 1, 3 and 8 being of uniform thickness or tapered in thickness from the apex to the periphery or vice versa. The diaphragm may also be flat and the outline instead of being circular may be polygonal, oval or elliptical. Different areas of the diaphragm may also be made of varying density. The surrounding annular flange portion is made flexible to afford freedom of movement of the cone or the juncture of the cone portion and the rim portion may be made thinner than the cone portion or in the form of a groove. Specification 293,912, [Class 87 (ii), Moulding plastic &c. substances], is referred to. Reference has been directed by the Comptroller to Specification 399,165.
GB11651/32A 1927-11-07 1932-04-22 Improvements in acoustic diaphragms and method of making the same Expired GB403685A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US231409A US1872081A (en) 1927-11-07 1927-11-07 Sound radiator
GB11651/32A GB403685A (en) 1927-11-07 1932-04-22 Improvements in acoustic diaphragms and method of making the same
FR736005D FR736005A (en) 1927-11-07 1932-04-27 Sound radiation device and method for its manufacture

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US231409A US1872081A (en) 1927-11-07 1927-11-07 Sound radiator
GB11651/32A GB403685A (en) 1927-11-07 1932-04-22 Improvements in acoustic diaphragms and method of making the same
FR736005T 1932-04-27

Publications (1)

Publication Number Publication Date
GB403685A true GB403685A (en) 1933-12-22

Family

ID=9990164

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11651/32A Expired GB403685A (en) 1927-11-07 1932-04-22 Improvements in acoustic diaphragms and method of making the same

Country Status (3)

Country Link
US (1) US1872081A (en)
FR (1) FR736005A (en)
GB (1) GB403685A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988000423A1 (en) * 1986-07-04 1988-01-14 Ant Nachrichtentechnik Gmbh Membrane system with flexion-resistant rotationally symmetric plate for use as a sound reflecting or receiving element

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124211A (en) * 1964-03-10 Multiple headed acoustic stethoscope
US2596645A (en) * 1947-01-10 1952-05-13 Joseph B Brennan Method of making acoustic diaphragms
US2549139A (en) * 1947-06-17 1951-04-17 Stevens Products Inc Cone diaphragm for loud-speakers
US3109508A (en) * 1960-02-11 1963-11-05 Taylor Instrument Co Acoustic stethoscope
US3136382A (en) * 1962-02-14 1964-06-09 Thaler Edward Acoustic transducer
US3221834A (en) * 1963-05-09 1965-12-07 Hawley Products Co Acoustic diaphragm
US3190389A (en) * 1963-06-20 1965-06-22 Gen Electric Loudspeaker construction
US3342286A (en) * 1966-06-22 1967-09-19 Motorola Inc Compliance activated multi-diaphragm
US3708035A (en) * 1967-11-30 1973-01-02 Nippon Musical Instruments Mfg Diaphragm for loudspeakers
CN102118672A (en) * 2011-03-28 2011-07-06 苏州上声电子有限公司 Speaker vibrating diaphragm and speaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988000423A1 (en) * 1986-07-04 1988-01-14 Ant Nachrichtentechnik Gmbh Membrane system with flexion-resistant rotationally symmetric plate for use as a sound reflecting or receiving element

Also Published As

Publication number Publication date
FR736005A (en) 1932-11-18
US1872081A (en) 1932-08-16

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