GB1123082A - Improvements in or relating to moving coil type loudspeakers - Google Patents
Improvements in or relating to moving coil type loudspeakersInfo
- Publication number
- GB1123082A GB1123082A GB1790966A GB1790966A GB1123082A GB 1123082 A GB1123082 A GB 1123082A GB 1790966 A GB1790966 A GB 1790966A GB 1790966 A GB1790966 A GB 1790966A GB 1123082 A GB1123082 A GB 1123082A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cup
- pole
- pot
- front plate
- magnet
- 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)
Abstract
1,123,082. Loud-speakers. GOODMANS LOUDSPEAKERS Ltd. 19 April, 1967 [25 April, 1966], No. 17909/66. Heading H4J. In a method of making a moving coil loudspeaker, a non-ferrous ring or cup 8 is interposed between a centre pole 4 and a magnet pot 1. The cup 8 has spaced lugs 10 around its periphery clamped between a front plate 5 and the pot 1. Axial pressure is applied to the assembly to cause the lugs 10 to be embedded in the front plate 5 and the pot 1 with distortion of these members 1, 5 to lock the components together (Fig. 2 not shown). Loss of magnetic path between the members 1, 5 is at a minimum. The cup 8 may include an inwardly-directed flange 8a received upon an annular shoulder 9 on the centre pole 4 during the pressing operation. A flanged ring or cup (13), Fig. 4 (not shown), may assist in centring the pole 4 and a cylindrical magnet 2. Alternatively the locating cup 8 may have a downwardly facing lip (12), Fig. 3 (not shown), which bears upon the rim of a shoulder of the pole 4. The assembly may be permanently fastened together by a swaging, staking, screwing or welding operation. Thus a rib 14 may be subjected to staking to deform it into locking engagement with a chassis (16, Fig. 2 (not shown), and with the front plate 5. A sleeve 3 of cardboard or plastics centres the magnet 2. Prior to pressing, a steel tube 11 is inserted to maintain the air gap 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1790966A GB1123082A (en) | 1966-04-25 | 1966-04-25 | Improvements in or relating to moving coil type loudspeakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1790966A GB1123082A (en) | 1966-04-25 | 1966-04-25 | Improvements in or relating to moving coil type loudspeakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1123082A true GB1123082A (en) | 1968-08-14 |
Family
ID=10103387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1790966A Expired GB1123082A (en) | 1966-04-25 | 1966-04-25 | Improvements in or relating to moving coil type loudspeakers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1123082A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4465905A (en) * | 1982-04-28 | 1984-08-14 | International Jensen Incorporated | Loudspeaker assembly |
| US4565905A (en) * | 1982-04-28 | 1986-01-21 | International Jensen Incoporated | Loudspeaker construction |
-
1966
- 1966-04-25 GB GB1790966A patent/GB1123082A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4465905A (en) * | 1982-04-28 | 1984-08-14 | International Jensen Incorporated | Loudspeaker assembly |
| US4565905A (en) * | 1982-04-28 | 1986-01-21 | International Jensen Incoporated | Loudspeaker construction |
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