US2042822A - Telephone transmitter - Google Patents

Telephone transmitter Download PDF

Info

Publication number
US2042822A
US2042822A US670406A US67040633A US2042822A US 2042822 A US2042822 A US 2042822A US 670406 A US670406 A US 670406A US 67040633 A US67040633 A US 67040633A US 2042822 A US2042822 A US 2042822A
Authority
US
United States
Prior art keywords
electrode
diaphragm
support
transmitter
annular
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
US670406A
Other languages
English (en)
Inventor
Arthur F Bennett
William L Tuffnell
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
Bell Telephone Laboratories 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
Priority to BE402491D priority Critical patent/BE402491A/xx
Application filed by Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Priority to US670406A priority patent/US2042822A/en
Priority to GB8348/34A priority patent/GB435130A/en
Priority to FR771454D priority patent/FR771454A/fr
Priority to DEI49678D priority patent/DE642693C/de
Application granted granted Critical
Publication of US2042822A publication Critical patent/US2042822A/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
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/021—Microphones with granular resistance material

Definitions

  • a flexible metallic spider such as of annealed copper, having an annular flanged portion 3I extending through the aperture in the diaphragm adjacent the shoulder 29 and a plurality of radially extending arms 32 is held in position on the flange 29 by the tabs 28 which are bent over the flange 3
  • the closure member 30 and the arms 32 are also clamped to an inwardly extending annular flange 33 on the frame or support l6 by an annular insulating member 34, which may be of a ceramic material, the arms '32 forming an electrical connection between the electrode 26 and the frame I6.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Telephone Set Structure (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
US670406A 1933-05-11 1933-05-11 Telephone transmitter Expired - Lifetime US2042822A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE402491D BE402491A (fr) 1933-05-11
US670406A US2042822A (en) 1933-05-11 1933-05-11 Telephone transmitter
GB8348/34A GB435130A (en) 1933-05-11 1934-03-16 Improvements in or relating to microphones
FR771454D FR771454A (fr) 1933-05-11 1934-04-09 Perfectionnements aux microphones
DEI49678D DE642693C (de) 1933-05-11 1934-05-12 Koernermikrophon, bei dem die Koernerkammer besondere Vorratsraeume enthaelt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US670406A US2042822A (en) 1933-05-11 1933-05-11 Telephone transmitter

Publications (1)

Publication Number Publication Date
US2042822A true US2042822A (en) 1936-06-02

Family

ID=24690278

Family Applications (1)

Application Number Title Priority Date Filing Date
US670406A Expired - Lifetime US2042822A (en) 1933-05-11 1933-05-11 Telephone transmitter

Country Status (5)

Country Link
US (1) US2042822A (fr)
BE (1) BE402491A (fr)
DE (1) DE642693C (fr)
FR (1) FR771454A (fr)
GB (1) GB435130A (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429988A (en) * 1943-12-28 1947-11-04 Bell Telephone Labor Inc Temperature compensated microphone
US2431022A (en) * 1942-12-21 1947-11-18 Kellogg Switchboard & Supply Telephone transmitter
US2494704A (en) * 1945-09-01 1950-01-17 Bell Telephone Labor Inc Microphone with fuse
US2521744A (en) * 1944-08-15 1950-09-12 Int Standard Electric Corp Moistureproof microphone
US2527159A (en) * 1947-04-26 1950-10-24 Bell Telephone Labor Inc Telephone transmitter with radial slots in the carbon chamber
US2532694A (en) * 1947-10-31 1950-12-05 Bell Telephone Labor Inc Telephone transmitter having frustoconical back electrode
US2532741A (en) * 1947-10-31 1950-12-05 Bell Telephone Labor Inc Microphone with opposite electrodes being of varying and constant curvature
US2538026A (en) * 1946-05-07 1951-01-16 Univ Loudspeakers Inc Electroacoustic transducer for actuating loud speakers
US2585052A (en) * 1948-04-23 1952-02-12 Int Standard Electric Corp Granule type acoustic transducer
US2609458A (en) * 1948-01-16 1952-09-02 Vigren Sten Daniel Telephone apparatus
DE757629C (de) * 1938-09-09 1953-01-19 Lorenz C Ag Querstrommikrofon
US2819351A (en) * 1955-07-21 1958-01-07 Robin Hood Co Microphone

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740642C (de) * 1941-01-25 1943-10-25 Kabelindustrie Ag Kapselmikrofon mit einem aus Isolierstoff bestehenden Kapselgehaeuse

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757629C (de) * 1938-09-09 1953-01-19 Lorenz C Ag Querstrommikrofon
US2431022A (en) * 1942-12-21 1947-11-18 Kellogg Switchboard & Supply Telephone transmitter
US2429988A (en) * 1943-12-28 1947-11-04 Bell Telephone Labor Inc Temperature compensated microphone
US2521744A (en) * 1944-08-15 1950-09-12 Int Standard Electric Corp Moistureproof microphone
US2494704A (en) * 1945-09-01 1950-01-17 Bell Telephone Labor Inc Microphone with fuse
US2538026A (en) * 1946-05-07 1951-01-16 Univ Loudspeakers Inc Electroacoustic transducer for actuating loud speakers
US2527159A (en) * 1947-04-26 1950-10-24 Bell Telephone Labor Inc Telephone transmitter with radial slots in the carbon chamber
US2532694A (en) * 1947-10-31 1950-12-05 Bell Telephone Labor Inc Telephone transmitter having frustoconical back electrode
US2532741A (en) * 1947-10-31 1950-12-05 Bell Telephone Labor Inc Microphone with opposite electrodes being of varying and constant curvature
US2609458A (en) * 1948-01-16 1952-09-02 Vigren Sten Daniel Telephone apparatus
US2585052A (en) * 1948-04-23 1952-02-12 Int Standard Electric Corp Granule type acoustic transducer
US2819351A (en) * 1955-07-21 1958-01-07 Robin Hood Co Microphone

Also Published As

Publication number Publication date
GB435130A (en) 1935-09-16
DE642693C (de) 1937-03-12
BE402491A (fr)
FR771454A (fr) 1934-10-09

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