GB233684A - Improvements in telephonic receivers, transmitters or the like - Google Patents

Improvements in telephonic receivers, transmitters or the like

Info

Publication number
GB233684A
GB233684A GB10750/25A GB1075025A GB233684A GB 233684 A GB233684 A GB 233684A GB 10750/25 A GB10750/25 A GB 10750/25A GB 1075025 A GB1075025 A GB 1075025A GB 233684 A GB233684 A GB 233684A
Authority
GB
United Kingdom
Prior art keywords
armature
diaphragm
attached
loud
pole
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
GB10750/25A
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.)
ALBERT MARIE MARQUER
Original Assignee
ALBERT MARIE MARQUER
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 ALBERT MARIE MARQUER filed Critical ALBERT MARIE MARQUER
Publication of GB233684A publication Critical patent/GB233684A/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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • 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)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Headphones And Earphones (AREA)

Abstract

233,684. Marquer, A. M. May 8, 1924, [Convention date]. Loud-speakers; earpieces; magneto-microphonic relays.-An armature 1, Fig. 1, is balanced between two pairs of pole-pieces 2, 3, 4, 5, polepieces of similar polarity being located in corresponding positions on opposite sides of the armature, and all the pole-pieces being provided with coils 7, 8, 9, 10 wound in such a manner that when the flux is increased on one side of the armature it is reduced on the other side. The diaphragm can be integral with the armature or attached thereto. In a loud-speaker, as shown in Fig. 2, the magnet is adjustable relatively to the armature 1 by means of a screw 11 in conjunction with a spring abutment 14. The diaphragm 15 attached to the armature 1 is conical and is arranged close to a slotted member 17 which communicates with the sound outlet 16. A similar slotted member may be used with a flat diaphragm. The armature 1 instead of being attached to a sound diaphragm may be connected to a pair of microphones 18, 19, Fig. 6.
GB10750/25A 1927-05-24 1925-04-24 Improvements in telephonic receivers, transmitters or the like Expired GB233684A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR33602T 1927-05-24

Publications (1)

Publication Number Publication Date
GB233684A true GB233684A (en) 1926-04-01

Family

ID=8671232

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10750/25A Expired GB233684A (en) 1927-05-24 1925-04-24 Improvements in telephonic receivers, transmitters or the like

Country Status (2)

Country Link
FR (3) FR594032A (en)
GB (1) GB233684A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10058274A1 (en) * 2000-11-23 2002-05-29 Alfa Laval Flow Gmbh Membrane is provided with a surface structure formed by two families of crossing grooves or beads oriented at angles within a specified range to the radii drawn through the respective crossing points

Also Published As

Publication number Publication date
FR34464E (en) 1929-06-19
FR33602E (en) 1928-11-29
FR594032A (en) 1925-09-04

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