GB631970A - Improvements in or relating to acoustic diaphragms - Google Patents

Improvements in or relating to acoustic diaphragms

Info

Publication number
GB631970A
GB631970A GB2131/47A GB213147A GB631970A GB 631970 A GB631970 A GB 631970A GB 2131/47 A GB2131/47 A GB 2131/47A GB 213147 A GB213147 A GB 213147A GB 631970 A GB631970 A GB 631970A
Authority
GB
United Kingdom
Prior art keywords
hub
relating
teeth
ring
closed
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
GB2131/47A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 BE482597D priority Critical patent/BE482597A/xx
Priority claimed from GB15574/44A external-priority patent/GB594082A/en
Priority to GB15574/44A priority patent/GB594082A/en
Priority to GB21942/45A priority patent/GB616158A/en
Priority claimed from GB21942/45A external-priority patent/GB616158A/en
Priority to US627945A priority patent/US2521744A/en
Priority to FR939111D priority patent/FR939111A/fr
Priority to CH271258D priority patent/CH271258A/fr
Priority to US704965A priority patent/US2539488A/en
Priority to GB2131/47A priority patent/GB631970A/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to ES177004A priority patent/ES177004A1/es
Priority to BE477474D priority patent/BE477474A/xx
Priority to FR57814D priority patent/FR57814E/fr
Priority to BE478254D priority patent/BE478254A/xx
Priority to FR58186D priority patent/FR58186E/fr
Priority to CH263325D priority patent/CH263325A/de
Publication of GB631970A publication Critical patent/GB631970A/en
Priority to DEST2548A priority patent/DE940654C/de
Priority to DEST2537A priority patent/DE873103C/de
Priority to DEST2523A priority patent/DE862768C/de
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
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/021—Microphones with granular resistance material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Toys (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
GB2131/47A 1944-08-15 1947-01-23 Improvements in or relating to acoustic diaphragms Expired GB631970A (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
BE482597D BE482597A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1944-08-15
GB15574/44A GB594082A (en) 1945-08-27 1944-08-15 Improvements in or relating to microphones
GB21942/45A GB616158A (en) 1944-08-15 1945-08-27 Improvements in or relating to electro-acoustic devices
US627945A US2521744A (en) 1944-08-15 1945-11-10 Moistureproof microphone
FR939111D FR939111A (fr) 1944-08-15 1946-04-03 Améliorations apportées aux microphones
CH271258D CH271258A (fr) 1944-08-15 1946-08-10 Microphone du type à résistance variable.
US704965A US2539488A (en) 1944-08-15 1946-10-22 Electroacoustic diaphragm coupling
GB2131/47A GB631970A (en) 1944-08-15 1947-01-23 Improvements in or relating to acoustic diaphragms
ES177004A ES177004A1 (es) 1944-08-15 1947-02-28 Mejoras en o relativas a dispositivos electroacústicos
BE477474D BE477474A (fr) 1944-08-15 1947-11-20 Ameliorations apportees aux microphones
FR57814D FR57814E (fr) 1944-08-15 1947-12-02 Améliorations apportées aux microphones
BE478254D BE478254A (fr) 1944-08-15 1947-12-17 Appareils electro-acoustiques
FR58186D FR58186E (fr) 1944-08-15 1948-01-22 Améliorations apportées aux microphones
CH263325D CH263325A (de) 1944-08-15 1948-01-23 Akustische Membran für elektroakustische Wandler.
DEST2548A DE940654C (de) 1944-08-15 1950-10-01 Koernermikrophon
DEST2537A DE873103C (de) 1944-08-15 1950-10-01 Akustische Membran fuer elektroakustische Wandler
DEST2523A DE862768C (de) 1944-08-15 1950-10-31 Elektroakustischer Wandler

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB15574/44A GB594082A (en) 1945-08-27 1944-08-15 Improvements in or relating to microphones
GB21942/45A GB616158A (en) 1944-08-15 1945-08-27 Improvements in or relating to electro-acoustic devices
GB2131/47A GB631970A (en) 1944-08-15 1947-01-23 Improvements in or relating to acoustic diaphragms

Publications (1)

Publication Number Publication Date
GB631970A true GB631970A (en) 1949-11-14

Family

ID=36952628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2131/47A Expired GB631970A (en) 1944-08-15 1947-01-23 Improvements in or relating to acoustic diaphragms

Country Status (6)

Country Link
US (2) US2521744A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (3) BE477474A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (2) CH271258A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (3) DE940654C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (3) FR939111A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB631970A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012220006A1 (de) * 2012-11-02 2014-05-08 Robert Bosch Gmbh Bauelement mit einer mikromechanischen Mikrofonstruktur
USD966235S1 (en) * 2019-08-23 2022-10-11 Tymphany Acoustic Technology Limited Waveguide

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1141107A (en) * 1902-01-27 1915-06-01 Kellogg Switchboard & Supply Telephone-transmitter.
AU107204B (en) * 1904-07-15 1905-06-27 And Improvements inthe wheels of steam or gas turbines
US1226886A (en) * 1913-05-13 1917-05-22 New Jersey Patent Co Telephone-transmitter.
US1352939A (en) * 1917-02-24 1920-09-14 Western Electric Co Telephone-transmitter
US1869230A (en) * 1929-08-16 1932-07-26 Philadelphia Storage Battery Electrical element
US1848433A (en) * 1929-09-09 1932-03-08 Magnavox Co Loud speaker element
US1846351A (en) * 1930-06-13 1932-02-23 Murkham Leonard Walter Electrodynamic sound-reproducing device
US1943425A (en) * 1931-12-26 1934-01-16 Kellogg Switchboard & Supply Diaphragm
US2069242A (en) * 1933-01-19 1937-02-02 George A Graham Electroacoustic energy converting system
US1930328A (en) * 1933-01-25 1933-10-10 Tichenor Sound reproducing diaphragm
BE402491A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1933-05-11
GB425558A (en) * 1933-10-26 1935-03-18 Alfred Graham & Co Ltd Improvements relating to telephones
GB425186A (en) * 1933-11-24 1935-03-08 Alfred Graham & Co Ltd Improvements relating to telephones
US2043833A (en) * 1934-11-12 1936-06-09 Abraham I Klotz Protecting framing for brief cases
US2191992A (en) * 1937-03-31 1940-02-27 Int Standard Electric Corp Telephone transmitter
US2293078A (en) * 1939-12-05 1942-08-18 B A Proctor Company Inc Microphone
CH220358A (de) * 1940-10-26 1942-03-31 Fides Gmbh Kapselmikrofon.

Also Published As

Publication number Publication date
FR57814E (fr) 1953-09-17
DE873103C (de) 1953-04-09
CH263325A (de) 1949-08-31
FR939111A (fr) 1948-11-04
BE482597A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE940654C (de) 1956-03-22
DE862768C (de) 1953-01-12
BE477474A (fr) 1948-05-20
US2521744A (en) 1950-09-12
FR58186E (fr) 1953-09-29
BE478254A (fr) 1948-05-17
CH271258A (fr) 1950-10-15
US2539488A (en) 1951-01-30

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