GB1018165A - Improvements in or relating to permanent magnet moving coil loudspeakers - Google Patents
Improvements in or relating to permanent magnet moving coil loudspeakersInfo
- Publication number
- GB1018165A GB1018165A GB4648463A GB4648463A GB1018165A GB 1018165 A GB1018165 A GB 1018165A GB 4648463 A GB4648463 A GB 4648463A GB 4648463 A GB4648463 A GB 4648463A GB 1018165 A GB1018165 A GB 1018165A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- magnet
- pole tip
- moving coil
- recess
- 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
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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
Landscapes
- Physics & Mathematics (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)
Abstract
1,018,165. Magnet system for moving coil transducers. ROLA CELESTION Ltd. Nov. 3, 1964 [Nov. 25, 1963], No. 46484/63. Heading H4J. A magnet system for a moving coil loudspeaker or microphone comprises a tubular yoke 10 having the outer surface 12 of the voice coil gap formed at one end and a recessed seating for a closure disc 15 formed at the other, a permanent magnet 17 being located on the closure disc and provided with a pole tip 18 defining the inner surface 19 of the voice coil gap. The intermediate portion of the yoke is undercut at 11. The closure disc 15 may be fixed in the recess 14 by upsetting the metal around the recess or by spot welding and the magnet 17 and pole tip 18 may be retained by the non-magnetic ring member 22 which, during the fixing of disc 15, is deformed to clamp the pole tip 18 to the magnet 17 and the magnet to the disc 15 in their proper aligned positions. Alternatively, Fig. 2 (not shown), the disc 15 may be secured in the recess and the magnet, pole tip, and disc, secured together by a heat sensitive adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4648463A GB1018165A (en) | 1963-11-25 | 1963-11-25 | Improvements in or relating to permanent magnet moving coil loudspeakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4648463A GB1018165A (en) | 1963-11-25 | 1963-11-25 | Improvements in or relating to permanent magnet moving coil loudspeakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1018165A true GB1018165A (en) | 1966-01-26 |
Family
ID=10441451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4648463A Expired GB1018165A (en) | 1963-11-25 | 1963-11-25 | Improvements in or relating to permanent magnet moving coil loudspeakers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1018165A (en) |
-
1963
- 1963-11-25 GB GB4648463A patent/GB1018165A/en not_active Expired
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