GB1321413A - Electromagnetic acoustic generators - Google Patents
Electromagnetic acoustic generatorsInfo
- Publication number
- GB1321413A GB1321413A GB4181171A GB4181171A GB1321413A GB 1321413 A GB1321413 A GB 1321413A GB 4181171 A GB4181171 A GB 4181171A GB 4181171 A GB4181171 A GB 4181171A GB 1321413 A GB1321413 A GB 1321413A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- sept
- electromagnetic acoustic
- sides
- stiffened
- 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K1/00—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs
- G10K1/06—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube
- G10K1/062—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated
- G10K1/063—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated the sounding member being a bell
- G10K1/064—Operating or striking mechanisms therefor
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Electromagnets (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
1321413 Electric bells SIEMENS AG 8 Sept 1971 [25 Sept 1970] 41811/71 Heading G5S The armature of a polarized electromagnetic acoustic generator is stiffened against bending in the direction of movement to prevent it acting as a microphone when the generator is used in a telephone set. The armature may be stiffened by means of longitudinal ribs or creases which extend over most of the length of the armature. Alternatively one, or both of the sides of the armature may be bent up at right angles to produce the required stiffness. Part of the sides may remain in the plane of the armature for ease of location. An armature 6, Fig. 8, of rectangular tubular crosssection material may also be used and the central region can be removed so as to accommodate the coils in order to keep magnetic stray flux losses at a minimum.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702047304 DE2047304B2 (en) | 1970-09-25 | 1970-09-25 | ELECTROMAGNETIC SOUND GENERATOR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1321413A true GB1321413A (en) | 1973-06-27 |
Family
ID=5783416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4181171A Expired GB1321413A (en) | 1970-09-25 | 1971-09-08 | Electromagnetic acoustic generators |
Country Status (12)
| Country | Link |
|---|---|
| AT (1) | AT311431B (en) |
| BE (1) | BE773028A (en) |
| CH (1) | CH536588A (en) |
| DE (1) | DE2047304B2 (en) |
| FI (1) | FI56760C (en) |
| FR (1) | FR2108324A5 (en) |
| GB (1) | GB1321413A (en) |
| IT (1) | IT938794B (en) |
| LU (1) | LU63947A1 (en) |
| NL (1) | NL7112904A (en) |
| SE (1) | SE368468B (en) |
| ZA (1) | ZA716203B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114285246A (en) * | 2021-12-16 | 2022-04-05 | 金陵科技学院 | Special-shaped iron core for reciprocating linear motion generator |
-
1970
- 1970-09-25 DE DE19702047304 patent/DE2047304B2/en active Granted
-
1971
- 1971-08-27 CH CH1257171A patent/CH536588A/en not_active IP Right Cessation
- 1971-09-08 GB GB4181171A patent/GB1321413A/en not_active Expired
- 1971-09-16 ZA ZA716203A patent/ZA716203B/en unknown
- 1971-09-16 AT AT806771A patent/AT311431B/en not_active IP Right Cessation
- 1971-09-20 NL NL7112904A patent/NL7112904A/xx not_active Application Discontinuation
- 1971-09-21 FR FR7133853A patent/FR2108324A5/fr not_active Expired
- 1971-09-22 IT IT28913/71A patent/IT938794B/en active
- 1971-09-23 LU LU63947D patent/LU63947A1/xx unknown
- 1971-09-24 SE SE12132/71A patent/SE368468B/xx unknown
- 1971-09-24 FI FI2671/71A patent/FI56760C/en active
- 1971-09-24 BE BE773028A patent/BE773028A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2108324A5 (en) | 1972-05-19 |
| DE2047304B2 (en) | 1972-11-30 |
| AT311431B (en) | 1973-11-12 |
| DE2047304A1 (en) | 1972-03-30 |
| NL7112904A (en) | 1972-03-28 |
| ZA716203B (en) | 1972-05-31 |
| CH536588A (en) | 1973-04-30 |
| IT938794B (en) | 1973-02-10 |
| LU63947A1 (en) | 1972-03-01 |
| FI56760C (en) | 1980-03-10 |
| BE773028A (en) | 1972-03-24 |
| FI56760B (en) | 1979-11-30 |
| SE368468B (en) | 1974-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |