HUT51438A - Electroacoustic transducers and manufacturing process of those - Google Patents
Electroacoustic transducers and manufacturing process of thoseInfo
- Publication number
- HUT51438A HUT51438A HU128687A HU128687A HUT51438A HU T51438 A HUT51438 A HU T51438A HU 128687 A HU128687 A HU 128687A HU 128687 A HU128687 A HU 128687A HU T51438 A HUT51438 A HU T51438A
- Authority
- HU
- Hungary
- Prior art keywords
- those
- manufacturing process
- shoe
- electroacoustic transducers
- units
- Prior art date
Links
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The transducer, e.g. for a telephone earpiece or microphone, has a centre pole shoe (2), front shoe (1), rear shoe (3), a permanent magnet (4) and a coil (13). - The assembly is held together by forming a plastics material or soft metal (7) around the centre pole shoe and the outer periphery of the units. ADVANTAGE - Simplified mfr. of units and thus costs. (First major country equivalent to HU-051438) (5pp Dwg.No.1/2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU871286A HU202342B (en) | 1987-03-24 | 1987-03-24 | Magnetic circuit of electroacoustic converter with magnetic centre moving-part |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU871286A HU202342B (en) | 1987-03-24 | 1987-03-24 | Magnetic circuit of electroacoustic converter with magnetic centre moving-part |
Publications (2)
Publication Number | Publication Date |
---|---|
HUT51438A true HUT51438A (en) | 1990-04-28 |
HU202342B HU202342B (en) | 1991-02-28 |
Family
ID=10953702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HU871286A HU202342B (en) | 1987-03-24 | 1987-03-24 | Magnetic circuit of electroacoustic converter with magnetic centre moving-part |
Country Status (1)
Country | Link |
---|---|
HU (1) | HU202342B (en) |
-
1987
- 1987-03-24 HU HU871286A patent/HU202342B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
HU202342B (en) | 1991-02-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
HMM4 | Cancellation of final prot. due to non-payment of fee |