GB1376414A - Electro acoustic-transducers - Google Patents

Electro acoustic-transducers

Info

Publication number
GB1376414A
GB1376414A GB996073A GB996073A GB1376414A GB 1376414 A GB1376414 A GB 1376414A GB 996073 A GB996073 A GB 996073A GB 996073 A GB996073 A GB 996073A GB 1376414 A GB1376414 A GB 1376414A
Authority
GB
United Kingdom
Prior art keywords
armature
rod
diaphragm
yoke
transducers
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
GB996073A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB996073A priority Critical patent/GB1376414A/en
Priority to ZA740476A priority patent/ZA74476B/en
Priority to IT49733/74A priority patent/IT1051573B/en
Publication of GB1376414A publication Critical patent/GB1376414A/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
    • 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)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

1376414 Pivoted armature transducers STANDARD TELEPHONES & CABLES Ltd 1 March 1973 9960/73 Heading H4J An eleotroacoustic transducer, e.g. a receiver or microphone, has a U-shaped yoke 1 (Fig. 2) of magnetically soft material. An armature 4 of magnetically soft material is pivoted about the free end of a leg 2. Leg 2 is a permanent magnet or other biasing magnetic flux source. A speech coil 3 is mounted on the yoke 1. An extension 8 on one side of the armature 4 carries a connecting rod 9. A diaphragm 10 is connected by the rod 9 to the armature 4 and is located on the opposite side of the yoke from that on which the armature is mounted. The armature pivot is formed by a ridge 7 or by two closely adjacent short ridges. The rod 9 is attached to the diaphragm 10 by forcing the rod end through the diaphragm 10 and then gluing or otherwise securing in place.
GB996073A 1973-03-01 1973-03-01 Electro acoustic-transducers Expired GB1376414A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB996073A GB1376414A (en) 1973-03-01 1973-03-01 Electro acoustic-transducers
ZA740476A ZA74476B (en) 1973-03-01 1974-01-23 Improvements in or relating to electric acoustic transducers
IT49733/74A IT1051573B (en) 1973-03-01 1974-03-27 IMPROVEMENT IN ELECTRO-ACOUSTIC TRANSDUCERS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB996073A GB1376414A (en) 1973-03-01 1973-03-01 Electro acoustic-transducers

Publications (1)

Publication Number Publication Date
GB1376414A true GB1376414A (en) 1974-12-04

Family

ID=9881960

Family Applications (1)

Application Number Title Priority Date Filing Date
GB996073A Expired GB1376414A (en) 1973-03-01 1973-03-01 Electro acoustic-transducers

Country Status (3)

Country Link
GB (1) GB1376414A (en)
IT (1) IT1051573B (en)
ZA (1) ZA74476B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2146521A1 (en) * 2008-07-18 2010-01-20 BYD Company Limited Earpiece for mobile communications with vibrating armature

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2146521A1 (en) * 2008-07-18 2010-01-20 BYD Company Limited Earpiece for mobile communications with vibrating armature
US8265331B2 (en) 2008-07-18 2012-09-11 Byd Company Limited Earpiece for communications

Also Published As

Publication number Publication date
ZA74476B (en) 1974-12-24
IT1051573B (en) 1981-05-20

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee