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US1763054A - Loud-speaker - Google Patents

Loud-speaker Download PDF

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Publication number
US1763054A
US1763054A US159554A US15955427A US1763054A US 1763054 A US1763054 A US 1763054A US 159554 A US159554 A US 159554A US 15955427 A US15955427 A US 15955427A US 1763054 A US1763054 A US 1763054A
Authority
US
United States
Prior art keywords
diaphragm
cone
sound
conical
secured
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
US159554A
Other languages
English (en)
Inventor
Marcus C Hopkins
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.)
TITANAFRAM Corp
Original Assignee
TITANAFRAM 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
Priority to BE347740D priority Critical patent/BE347740A/xx
Application filed by TITANAFRAM CORP filed Critical TITANAFRAM CORP
Priority to US159554A priority patent/US1763054A/en
Priority to GB32/28A priority patent/GB283211A/en
Priority to FR646684D priority patent/FR646684A/fr
Application granted granted Critical
Publication of US1763054A publication Critical patent/US1763054A/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
    • H04R7/02—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

Definitions

  • the object of the present invention is to so construct the diaphragm as to eliminate any distortion at the places above mentioned. This is accomplished by securing to the diaphragm, near the outer edge thereof, one or more ring like members which act as annular stiffening ribs, each forming a continuous circumferential contact with the face of the diaphragm, and thereby maintaining the diaphragm in true and accurate form.
  • these stiffening ribs may be made in a simple, inexpensive and practical way by forming them of relatively thin strip material and securing edgewise against the face of the diaphragm. When so made they fully answer the purposes above set forth. I
  • FIG. 1- is a rear view illustrating the diaphragm in assembled relation with the sound-' ing board of a loud speaker unit
  • Fig.2 is an enlarged sectional view thereof.
  • Fig. 3 is a sectional view of the modification.
  • the improved device comprises a conical diaphragm or tympanum 1, constructed of relatively light and stiff cover paper, being secured around its outer edge, by a flexible connection 2, to a sound board or resonator 3.
  • a conical diaphragm or tympanum 1 constructed of relatively light and stiff cover paper, being secured around its outer edge, by a flexible connection 2, to a sound board or resonator 3.
  • This is to that used for the construction of the diaphragm 1, and are secured edgewise against the inner-faceof the diaphragm 1 and preferably at right angles thereto as shown in the drawing.
  • the invention has been described in connection with a conical diaphragm but is equally applicable to any type of substantially conical or flat diaphragm where the same defeet, as above outlined, is apparent and sought to be overcome.
  • the preferred construction as illustrated also shows only two ring-like or annular members 4 but itis within the scope of the present invention to provide any number, more or less, of these members a as the occasion may demand.
  • annular reinforcing memhers 4 may be secured to the convex side of the cone as shown in Fig 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
US159554A 1927-01-07 1927-01-07 Loud-speaker Expired - Lifetime US1763054A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE347740D BE347740A (es) 1927-01-07
US159554A US1763054A (en) 1927-01-07 1927-01-07 Loud-speaker
GB32/28A GB283211A (en) 1927-01-07 1928-01-02 Loud speaker
FR646684D FR646684A (fr) 1927-01-07 1928-01-03 Reproduction de sons

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
US1763054A true US1763054A (en) 1930-06-10

Family

ID=22573035

Family Applications (1)

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

Country Status (4)

Country Link
US (1) US1763054A (es)
BE (1) BE347740A (es)
FR (1) FR646684A (es)
GB (1) GB283211A (es)

Cited By (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

Cited By (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 (es)
FR646684A (fr) 1928-11-14
GB283211A (en) 1928-06-28

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