GB653844A - Improvement in electromagnetic devices - Google Patents

Improvement in electromagnetic devices

Info

Publication number
GB653844A
GB653844A GB6069/48A GB606948A GB653844A GB 653844 A GB653844 A GB 653844A GB 6069/48 A GB6069/48 A GB 6069/48A GB 606948 A GB606948 A GB 606948A GB 653844 A GB653844 A GB 653844A
Authority
GB
United Kingdom
Prior art keywords
per cent
nickel
improvement
iron
electromagnetic devices
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
GB6069/48A
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.)
AT&T Corp
Original Assignee
Western Electric Co 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
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB653844A publication Critical patent/GB653844A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
GB6069/48A 1939-09-27 1948-02-27 Improvement in electromagnetic devices Expired GB653844A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US296823A US2267808A (en) 1939-09-27 1939-09-27 Electromagnetic device

Publications (1)

Publication Number Publication Date
GB653844A true GB653844A (en) 1951-05-30

Family

ID=23143722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6069/48A Expired GB653844A (en) 1939-09-27 1948-02-27 Improvement in electromagnetic devices

Country Status (3)

Country Link
US (1) US2267808A (enExample)
FR (1) FR960440A (enExample)
GB (1) GB653844A (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2443784A (en) * 1943-05-17 1948-06-22 Barber Coleman Company Relay
US2454973A (en) * 1944-12-01 1948-11-30 Gen Electric Polarized electromagnetic control device
US2912523A (en) * 1955-10-26 1959-11-10 Industrial Res Prod Inc Electro-acoustic transducer
US3222796A (en) * 1962-06-11 1965-12-14 Cryodry Corp Method of freeze-drying foods by direct gas injection

Also Published As

Publication number Publication date
US2267808A (en) 1941-12-30
FR960440A (enExample) 1950-04-18

Similar Documents

Publication Publication Date Title
GB522798A (en) Improvements in or relating to electromagnetically operated electric switches
GB487998A (en) Improvements in cathode ray tubes
GB541448A (en) Improvements in or relating to electro-acoustic devices
GB491444A (en) Improvements in short-wave radio transmitters embodying magnetron oscillators
GB653844A (en) Improvement in electromagnetic devices
GB535593A (en) Improvements in or relating to dial mechanisms for automatic telephony
GB217192A (en) Improvements in and relating to electrodynamic telephones
GB606670A (en) Improvements in and relating to the control of electric motors
GB445935A (en) An improved sound reproducing device
GB406086A (en) Improvements in or relating to permanent magnets
GB499033A (en) Selecting and printing apparatus for use in telegraph circuits
GB1061458A (en) Electromagnetic transducer
GB450974A (en) Improvements in or relating to ringers adapted for use in telephone sets
GB534175A (en) Improvements in or relating to magneto generators
GB518825A (en) Improvements in or relating to magnetic structures
GB481351A (en) Improvements in or relating to telephone receivers
GB321439A (en) Improved method of supporting the armatures of electro-magnetic devices such as loud speakers
GB434437A (en) Improvements in or relating to combined induction coils and ringers adapted for use in telephone sets
GB297938A (en) Magnetic alloys
GB376728A (en) Improvements in or relating to the mounting of permanent magnets
GB560769A (en) Arc quenching device for use with current collectors
GB551056A (en) Improvements in and relating to magnetic systems for laterally guiding a rotating shaft
GB236264A (en) Improvements in or relating to telegraphic relays
GB522493A (en) Improvements in or relating to ringers such as may be used in telephone subsets
GB295668A (en) Telephone receivers