US1876858A - Acoustic device - Google Patents

Acoustic device Download PDF

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Publication number
US1876858A
US1876858A US359823A US35982329A US1876858A US 1876858 A US1876858 A US 1876858A US 359823 A US359823 A US 359823A US 35982329 A US35982329 A US 35982329A US 1876858 A US1876858 A US 1876858A
Authority
US
United States
Prior art keywords
band
acoustic device
diaphragm
supporting
tympana
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 - Lifetime
Application number
US359823A
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English (en)
Inventor
Chireix Henri
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
Application granted granted Critical
Publication of US1876858A publication Critical patent/US1876858A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • 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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Definitions

  • This invention relates to acoustic devices. More particularly it relates to the means for supporting the diaphragm of such a device.
  • the object of the present invention is to disclose a number of improved methods of supporting the diaphragm of an acoustic device such as a sound reproducer.
  • a supporting band or strip made from "flexible material is placed underneath the edge of the sound reproducer diaphragm so as to form a flange of circular shape tending and adapted to counteract slipping of the base of the cone diaphragm in its plane.
  • This supporting band is folded or curved back or thickened or reinforced, as shown.
  • Figures 2 to 5 illustrate modifications thereof, and Figure 6 illustrates a modification having a pair of tympana.
  • A designates the band of soft material which the periphery of the tympanum E engages.
  • B is the groove in which the band A is lodged.
  • Figure 1 shows a solution in which the band A is bent back so as to form aflange or collar.
  • the two thicknesses of the material may be preferably held in their respective positions by sewing with thread, gluing or cementing, clips, or the like.
  • the band A comprises a portion raised at a right angle along the peripheral border or edge of the groove B.
  • Figure 3 comprises a band A of two superposed thicknesses, the inside diameter of the second thickness or layer being larger than that of the tympanum.
  • Figures 4 and 5 show two other modifications in which the band A is held by the aid of a circular spring F which is preferably in the form of a metallic reed.
  • the band A is folded or bent back all around in the groove B.
  • Figure 6 shows a modification in which two tympana of different diameters are arranged so that they oppose each other at their apices. The edges of the tympana are supported as in the other modifications.
  • Acoustic apparatus comprising two supports of diaphragms, a supporting element lodged in each support, each element supporting the border of a conical diaphragm and presentlng a concave surface 1n the neighborhood of the line of support of this border, a portion of said concave surface situated outside the periphery of the diaphragm forming an angle with the plane of the base of the cone which is much larger than the angle between the generatrix of the cone and the plane of its base, the two diaphragms being united at their apices and one having a diameter considerably smaller than that of the other.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
US359823A 1928-05-03 1929-05-02 Acoustic device Expired - Lifetime US1876858A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1876858X 1928-05-03

Publications (1)

Publication Number Publication Date
US1876858A true US1876858A (en) 1932-09-13

Family

ID=9681873

Family Applications (1)

Application Number Title Priority Date Filing Date
US359823A Expired - Lifetime US1876858A (en) 1928-05-03 1929-05-02 Acoustic device

Country Status (2)

Country Link
US (1) US1876858A (xx)
BE (2) BE349532A (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439666A (en) * 1944-01-31 1948-04-13 Rca Corp Loudspeaker diaphragm support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439666A (en) * 1944-01-31 1948-04-13 Rca Corp Loudspeaker diaphragm support

Also Published As

Publication number Publication date
BE349532A (xx)
BE360319A (xx)

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