GB637161A - Improvements in or relating to electro-magnetic vibratory devices - Google Patents
Improvements in or relating to electro-magnetic vibratory devicesInfo
- Publication number
- GB637161A GB637161A GB1167046A GB1167046A GB637161A GB 637161 A GB637161 A GB 637161A GB 1167046 A GB1167046 A GB 1167046A GB 1167046 A GB1167046 A GB 1167046A GB 637161 A GB637161 A GB 637161A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- polepieces
- flux
- permanent magnet
- reed
- 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
- 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)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
637,161. Reciprocating motors. STANDARD TELEPHONES & CABLES, Ltd., and ROBERTSON, J. S. P. April 16, 1946, No. 11670. [Class 35] [Also in Group XXXIX] An electromagnetic vibrator comprises a permanent magnet 4, polepieces 12, an armature 6 and alternating current coils 5 and 5A, the armature comprising a block of magnetic material mounted on a vibratable arm which forms no part of the magnetic circuits, and the block being positioned between polepieces of the same polarity and adjacent a third polepiece of opposite polarity, the A.C. flux circuits being independent of the permanent magnet. In the construction shown, the flux from the permanent magnet which forms the third polepiece runs through the yoke 2 and 3 to the polepieces on each side of the armature. The flux from the alternating coils runs through the yoke from one pole on one side of the armature to that on the other side. The supporting reed for the armature comprises two L-shaped pieces slotted to facilitate vibration. The diaphragm 9 is driven by a rod 8 which may be joined to the reed between its point of support and the armature as shown, or it may be joined to the reed on the other side of the armature. Specifications 481,740, [Group XXXIX], 584,934 and 637,013, [both in Group XXII], are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1167046A GB637161A (en) | 1946-04-16 | 1946-04-16 | Improvements in or relating to electro-magnetic vibratory devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1167046A GB637161A (en) | 1946-04-16 | 1946-04-16 | Improvements in or relating to electro-magnetic vibratory devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB637161A true GB637161A (en) | 1950-05-17 |
Family
ID=9990524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1167046A Expired GB637161A (en) | 1946-04-16 | 1946-04-16 | Improvements in or relating to electro-magnetic vibratory devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB637161A (en) |
-
1946
- 1946-04-16 GB GB1167046A patent/GB637161A/en not_active Expired
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