GB274957A - Improvements in or relating to telephone apparatus - Google Patents

Improvements in or relating to telephone apparatus

Info

Publication number
GB274957A
GB274957A GB1119126A GB1119126A GB274957A GB 274957 A GB274957 A GB 274957A GB 1119126 A GB1119126 A GB 1119126A GB 1119126 A GB1119126 A GB 1119126A GB 274957 A GB274957 A GB 274957A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
piles
armature
magnetic material
thin washers
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
GB1119126A
Other languages
English (en)
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Priority to GB1119126A priority Critical patent/GB274957A/en
Priority to FR618120D priority patent/FR618120A/fr
Publication of GB274957A publication Critical patent/GB274957A/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
    • H04R7/26—Damping by means acting directly on free portion of diaphragm or cone
    • 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
    • H04R7/22—Clamping rim of diaphragm or cone against seating

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Telephone Set Structure (AREA)
GB1119126A 1926-04-28 1926-04-28 Improvements in or relating to telephone apparatus Expired GB274957A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1119126A GB274957A (en) 1926-04-28 1926-04-28 Improvements in or relating to telephone apparatus
FR618120D FR618120A (fr) 1926-04-28 1926-06-25 Perfectionnements aux récepteurs téléphoniques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1119126A GB274957A (en) 1926-04-28 1926-04-28 Improvements in or relating to telephone apparatus

Publications (1)

Publication Number Publication Date
GB274957A true GB274957A (en) 1927-07-28

Family

ID=9981680

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1119126A Expired GB274957A (en) 1926-04-28 1926-04-28 Improvements in or relating to telephone apparatus

Country Status (2)

Country Link
FR (1) FR618120A (fr)
GB (1) GB274957A (fr)

Also Published As

Publication number Publication date
FR618120A (fr) 1927-03-03

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