GB340219A - Improvements in electromagnetic devices for reproducing or recording sound - Google Patents

Improvements in electromagnetic devices for reproducing or recording sound

Info

Publication number
GB340219A
GB340219A GB28605/29A GB2860529A GB340219A GB 340219 A GB340219 A GB 340219A GB 28605/29 A GB28605/29 A GB 28605/29A GB 2860529 A GB2860529 A GB 2860529A GB 340219 A GB340219 A GB 340219A
Authority
GB
United Kingdom
Prior art keywords
pole pieces
diaphragm
armature
casing
class
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
GB28605/29A
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products 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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Publication of GB340219A publication Critical patent/GB340219A/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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/16—Mounting or connecting stylus to transducer with or without damping means
    • 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
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
GB28605/29A 1928-12-19 1929-09-20 Improvements in electromagnetic devices for reproducing or recording sound Expired GB340219A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US326941A US1816906A (en) 1928-12-19 1928-12-19 Electromagnetic device

Publications (1)

Publication Number Publication Date
GB340219A true GB340219A (en) 1930-12-22

Family

ID=23274434

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28605/29A Expired GB340219A (en) 1928-12-19 1929-09-20 Improvements in electromagnetic devices for reproducing or recording sound

Country Status (4)

Country Link
US (1) US1816906A (enrdf_load_stackoverflow)
FR (1) FR683390A (enrdf_load_stackoverflow)
GB (1) GB340219A (enrdf_load_stackoverflow)
NL (1) NL29139C (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2508783A (en) * 1945-02-16 1950-05-23 Lionel B Cornwell Electrical sound translating device

Also Published As

Publication number Publication date
NL29139C (enrdf_load_stackoverflow)
FR683390A (fr) 1930-06-11
US1816906A (en) 1931-08-04

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