FR57814E - Améliorations apportées aux microphones - Google Patents

Améliorations apportées aux microphones

Info

Publication number: FR57814E
Authority: FR; France
Prior art keywords: microphone; microphone improvements
Prior art date: 1944-08-15
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

Other languages

Inventor

Dennis Edward Skelton

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.)

International Standard Electric Corp

Original Assignee

International Standard Electric 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.)

1944-08-15

Filing date

1947-12-02

Publication date

1953-09-17

1944-08-15 Priority claimed from GB15574/44A external-priority patent/GB594082A/en

1945-08-27 Priority claimed from GB21942/45A external-priority patent/GB616158A/en

1947-12-02 Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp

1953-09-17 Application granted granted Critical

1953-09-17 Publication of FR57814E publication Critical patent/FR57814E/fr

Status Expired legal-status Critical Current

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)
Details Of Audible-Bandwidth Transducers (AREA)
Piezo-Electric Transducers For Audible Bands (AREA)
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Toys (AREA)

FR57814D 1944-08-15 1947-12-02 Améliorations apportées aux microphones Expired FR57814E (fr)

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
FR57814E true FR57814E (fr)	1953-09-17

Family

ID=36952628

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
FR939111D Expired FR939111A (fr)	1944-08-15	1946-04-03	Améliorations apportées aux microphones
FR57814D Expired FR57814E (fr)	1944-08-15	1947-12-02	Améliorations apportées aux microphones
FR58186D Expired FR58186E (fr)	1944-08-15	1948-01-22	Améliorations apportées aux microphones

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
FR939111D Expired FR939111A (fr)	1944-08-15	1946-04-03	Améliorations apportées aux microphones

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
FR58186D Expired FR58186E (fr)	1944-08-15	1948-01-22	Améliorations apportées aux microphones

Country Status (6)

Country	Link
US (2)	US2521744A (fr)
BE (3)	BE477474A (fr)
CH (2)	CH271258A (fr)
DE (3)	DE940654C (fr)
FR (3)	FR939111A (fr)
GB (1)	GB631970A (fr)

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 (16)

* 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.
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 (fr) *	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.

0
- BE BE482597D patent/BE482597A/xx unknown
1945
- 1945-11-10 US US627945A patent/US2521744A/en not_active Expired - Lifetime
1946
- 1946-04-03 FR FR939111D patent/FR939111A/fr not_active Expired
- 1946-08-10 CH CH271258D patent/CH271258A/fr unknown
- 1946-10-22 US US704965A patent/US2539488A/en not_active Expired - Lifetime
1947
- 1947-01-23 GB GB2131/47A patent/GB631970A/en not_active Expired
- 1947-11-20 BE BE477474D patent/BE477474A/fr unknown
- 1947-12-02 FR FR57814D patent/FR57814E/fr not_active Expired
- 1947-12-17 BE BE478254D patent/BE478254A/fr unknown
1948
- 1948-01-22 FR FR58186D patent/FR58186E/fr not_active Expired
- 1948-01-23 CH CH263325D patent/CH263325A/de unknown
1950
- 1950-10-01 DE DEST2548A patent/DE940654C/de not_active Expired
- 1950-10-01 DE DEST2537A patent/DE873103C/de not_active Expired
- 1950-10-31 DE DEST2523A patent/DE862768C/de not_active Expired

Also Published As

Publication number	Publication date
FR58186E (fr)	1953-09-29
FR939111A (fr)	1948-11-04
BE478254A (fr)	1948-05-17
BE477474A (fr)	1948-05-20
BE482597A (fr)
US2521744A (en)	1950-09-12
US2539488A (en)	1951-01-30
DE940654C (de)	1956-03-22
GB631970A (en)	1949-11-14
DE873103C (de)	1953-04-09
CH263325A (de)	1949-08-31
DE862768C (de)	1953-01-12
CH271258A (fr)	1950-10-15

Publication	Publication Date	Title
FR908631A (fr)	1946-04-15	Perfectionnements aux aéro-moteurs
FR939369A (fr)	1948-11-12	Perfectionnements aux microphones directionnels
FR933989A (fr)	1948-05-07	Perfectionnements aux microphones
FR57814E (fr)	1953-09-17	Améliorations apportées aux microphones
FR988897A (fr)	1951-09-03	Capsule microphonique
FR55621E (fr)	1952-09-02	Perfectionnements aux freins
FR994075A (fr)	1951-11-12	Microphone
FR56979E (fr)	1952-10-10	Microphones différentiels
FR939127A (fr)	1948-11-04	Microphones
FR977486A (fr)	1951-04-02	Perfectionnements aux microphones
FR928854A (fr)	1947-12-10	Perfectionnements apportés aux haut-parleurs ou microphones électrodynamiques
FR992956A (fr)	1951-10-25	Microphone
FR942982A (fr)	1949-02-23	Perfectionnements aux casques téléphoniques
FR907948A (fr)	1946-03-26	Haut-parleur
FR56275E (fr)	1952-09-22	Microphone à perle-amplificateur
FR899711A (fr)	1945-06-08	Perfectionnements aux diaphragmes de haut-parleurs
FR916659A (fr)	1946-12-12	Perfectionnements aux compresseurs
FR928977A (fr)	1947-12-12	Perfectionnements aux pulvérisateurs
FR935591A (fr)	1948-06-23	Perfectionnements aux sondeurs acoustiques
FR929296A (fr)	1947-12-22	Perfectionnements aux projecteurs cinématographiques sonores
FR909225A (fr)	1946-05-02	Perfectionnements aux haut-parleurs
FR907363A (fr)	1946-03-11	Perfectionnement aux jouets
FR916610A (fr)	1946-12-11	Perfectionnements aux freins
FR910621A (fr)	1946-06-13	Haut-parleur électrodynamique
ES168299A1 (es)	1945-03-01	Microfono incorrosible