FR847000A - Appareil téléphonique - Google Patents

Appareil téléphonique

Info

Publication number
FR847000A
FR847000A FR847000DA FR847000A FR 847000 A FR847000 A FR 847000A FR 847000D A FR847000D A FR 847000DA FR 847000 A FR847000 A FR 847000A
Authority
FR
France
Prior art keywords
telephone device
telephone
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
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.)
United States Instrument Corp
Original Assignee
United States Instrument 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.)
Filing date
Publication date
Application filed by United States Instrument Corp filed Critical United States Instrument Corp
Application granted granted Critical
Publication of FR847000A publication Critical patent/FR847000A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
FR847000D 1937-12-04 1938-12-03 Appareil téléphonique Expired FR847000A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US178150A US2245511A (en) 1937-12-04 1937-12-04 Telephone instrument

Publications (1)

Publication Number Publication Date
FR847000A true FR847000A (fr) 1939-09-28

Family

ID=22651402

Family Applications (1)

Application Number Title Priority Date Filing Date
FR847000D Expired FR847000A (fr) 1937-12-04 1938-12-03 Appareil téléphonique

Country Status (3)

Country Link
US (1) US2245511A (fr)
FR (1) FR847000A (fr)
GB (1) GB513895A (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433739A (en) * 1943-04-23 1947-12-30 Laurence H Collins Vibrator
US2443784A (en) * 1943-05-17 1948-06-22 Barber Coleman Company Relay
US2503857A (en) * 1945-11-07 1950-04-11 Us Instr Corp Polarized electromagnet for telephone instruments
US2523775A (en) * 1946-05-17 1950-09-26 Wheeler Insulated Wire Company Electromagnetic transducer
US2646518A (en) * 1948-02-28 1953-07-21 Eastman Kodak Co Facsimile recording apparatus
US2633488A (en) * 1948-04-16 1953-03-31 Honeywell Regulator Co Electromagnetic relay
US2692918A (en) * 1952-07-09 1954-10-26 Samuel I Berger Magnetic sound powered telephone
DE955245C (de) * 1955-02-26 1957-01-03 Lehner Fernsprech Signal Vierpoliges Antriebssystem fuer elektroakustische Wandler
US2912523A (en) * 1955-10-26 1959-11-10 Industrial Res Prod Inc Electro-acoustic transducer
NL238368A (fr) * 1958-04-22
US6778677B2 (en) * 2002-07-16 2004-08-17 C. Ronald Coffin Repairable electromagnetic linear motor for loudspeakers and the like
US10028062B2 (en) 2013-03-15 2018-07-17 Bose Corporation Driving plural armatures with a common stator
US9258648B2 (en) 2014-03-07 2016-02-09 Bose Corporation Levered loudspeakers
US9357279B2 (en) 2014-03-07 2016-05-31 Bose Corporation Elastomeric torsion bushings for levered loudspeakers
US9601969B2 (en) * 2014-03-07 2017-03-21 Bose Corporation Inhibiting rocking of loads driven by plural levers
US9497549B2 (en) 2014-03-07 2016-11-15 Bose Corporation Levered loudspeakers
US10154347B2 (en) 2015-10-23 2018-12-11 Bose Corporation Bushings constrained by compression in levered apparatus

Also Published As

Publication number Publication date
US2245511A (en) 1941-06-10
GB513895A (en) 1939-10-25

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