FR963471A - - Google Patents

Info

Publication number
FR963471A
FR963471A FR963471DA FR963471A FR 963471 A FR963471 A FR 963471A FR 963471D A FR963471D A FR 963471DA FR 963471 A FR963471 A FR 963471A
Authority
FR
France
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
French (fr)
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.)
Publication date
Application granted granted Critical
Publication of FR963471A publication Critical patent/FR963471A/fr
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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
FR963471D 1947-06-18 Expired FR963471A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US755397A US2506624A (en) 1947-06-18 1947-06-18 Electroacoustic transducer

Publications (1)

Publication Number Publication Date
FR963471A true FR963471A (en) 1950-07-11

Family

ID=25038963

Family Applications (1)

Application Number Title Priority Date Filing Date
FR963471D Expired FR963471A (en) 1947-06-18

Country Status (6)

Country Link
US (1) US2506624A (en)
BE (1) BE481098A (en)
DE (1) DE813164C (en)
FR (1) FR963471A (en)
GB (1) GB653923A (en)
NL (1) NL71197C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932849A (en) * 1987-12-18 1990-06-12 Firma Karl Scheffer-Klute GmbH & Co. Manual air pump for two wheel tires

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2535757A (en) * 1946-06-25 1950-12-26 John J Root Peripherally driven electroacoustical transducer
US2567365A (en) * 1948-08-04 1951-09-11 Bell Telephone Labor Inc Polarized operator for telephone receivers
US2717096A (en) * 1953-01-23 1955-09-06 Minnis W Henderson Magnet gas tank cap
US4075437A (en) * 1976-07-16 1978-02-21 Bell Telephone Laboratories, Incorporated Composition, processing and devices including magnetic alloy
US4174983A (en) * 1978-07-13 1979-11-20 Bell Telephone Laboratories, Incorporated Fe-Cr-Co magnetic alloy processing
US4258234A (en) * 1979-08-24 1981-03-24 Bell Telephone Laboratories, Incorporated Electroacoustic device
US4311537A (en) * 1980-04-22 1982-01-19 Bell Telephone Laboratories, Incorporated Low-cobalt Fe-Cr-Co permanent magnet alloy processing
US4443667A (en) * 1982-01-11 1984-04-17 Bell Telephone Laboratories, Incorporated Electromagnetic transducer
NL8602719A (en) * 1986-10-29 1988-05-16 Philips Nv VIBRATION MOTOR.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1228639A (en) * 1914-03-27 1917-06-05 Erik Christian Bayer Sound-producing device.
US1579605A (en) * 1925-10-17 1926-04-06 Gavin Percy Radio amplifying receiver
US1895071A (en) * 1928-09-25 1933-01-24 Herman J Fanger Dynamic loud speaker unit
BE386404A (en) * 1931-02-12
US2170571A (en) * 1936-08-12 1939-08-22 Bell Telephone Labor Inc Acoustic device
US2249160A (en) * 1939-05-19 1941-07-15 Bell Telephone Labor Inc Acoustic device
US2395166A (en) * 1942-12-24 1946-02-19 Astatic Corp Transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932849A (en) * 1987-12-18 1990-06-12 Firma Karl Scheffer-Klute GmbH & Co. Manual air pump for two wheel tires

Also Published As

Publication number Publication date
US2506624A (en) 1950-05-09
DE813164C (en) 1951-09-10
BE481098A (en)
NL71197C (en)
GB653923A (en) 1951-05-30

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