GB394863A - An improved synchronous electric motor - Google Patents
An improved synchronous electric motorInfo
- Publication number
- GB394863A GB394863A GB30158/32A GB3015832A GB394863A GB 394863 A GB394863 A GB 394863A GB 30158/32 A GB30158/32 A GB 30158/32A GB 3015832 A GB3015832 A GB 3015832A GB 394863 A GB394863 A GB 394863A
- Authority
- GB
- United Kingdom
- Prior art keywords
- poles
- pole
- rotor
- stator
- motor
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
Abstract
394,863. Motors. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. Oct. 27, 1932, No. 30158. Convention date, Aug. 19. [Class 35.] Motors with unwound iron armatures.-Some of the stator poles of a synchronous motor particularly for clock driving are movable to produce an unsymmetrical pole distribution whereby the motor can be made either self-starting or non-self-starting. The stator comprises an iron core 1 having pole-pieces 2, 3 at its ends. The ends of the pieces 2, 3 are divided to form poles 4.. 11 which extend through holes in a copper ring 13. Alternate holes in the ring 13 are interrupted by slots 14 so that there is a complete copper circuit around the poles 4, 7, 8, 11 whereby a rotating field is produced when the coil 15 is energized. The rotor consists of a toothed steel disc 16 made by stamping, the teeth 17 being bent as shown in Fig. 1. Alternatively it may consist of a number of connected discs. The stator poles 8 .. 11 of the pole-piece 3 are connected to a lever 20 capable of being rocked against a spring 24; the displacement of these poles reduces the locking tendency of the stator poles on the rotor teeth so that the motor can start asychronously by reason of the production of eddy currents in the rotor. Movement of the polepiece 3 may be effected electrically.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH394863X | 1932-08-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB394863A true GB394863A (en) | 1933-07-06 |
Family
ID=4514043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30158/32A Expired GB394863A (en) | 1932-08-19 | 1932-10-27 | An improved synchronous electric motor |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB394863A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1369612A2 (en) * | 2002-06-06 | 2003-12-10 | Minebea Co., Ltd. | Toothed electromagnetic clutch-brake |
-
1932
- 1932-10-27 GB GB30158/32A patent/GB394863A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1369612A2 (en) * | 2002-06-06 | 2003-12-10 | Minebea Co., Ltd. | Toothed electromagnetic clutch-brake |
| EP1369612A3 (en) * | 2002-06-06 | 2005-04-27 | Minebea Co., Ltd. | Toothed electromagnetic clutch-brake |
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