GB1311842A - Electromagnetic actuator - Google Patents
Electromagnetic actuatorInfo
- Publication number
- GB1311842A GB1311842A GB1311842DA GB1311842A GB 1311842 A GB1311842 A GB 1311842A GB 1311842D A GB1311842D A GB 1311842DA GB 1311842 A GB1311842 A GB 1311842A
- Authority
- GB
- United Kingdom
- Prior art keywords
- members
- magnetic
- polarities
- maintained
- housing
- 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
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
- H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
- H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
- H01F7/124—Guiding or setting position of armatures, e.g. retaining armatures in their end position by mechanical latch, e.g. detent
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
Abstract
1311842 Electromagnets W N ELWOOD 28 April 1970 [26 Jan 1969] 58636/68 Heading H1P An electromagnetic actuator comprises cylindrical magnetic members 1, 2, 3 coaxially mounted in a housing 4; fixed members 1, 3 comprising MS pots (Fig. 2, not shown) containing cylindrical permanent magnets of lesser diameter and a solenoid in each annular gap; the open ends being closed by non- magnetic spacers. Movable member 3 comprises two similar pots and magnets mounted backto-back and fixed to a plunger 5 traversing bores of members 1, 3 and slidable in the end walls of the housing. With polarities shown member 2 is attracted by 1 and repelled by 2 in the position of Fig. 3A, and on current pulsing of the coils to reverse the magnetic polarities of members 1, 3 the member 2 moves to the position of Fig. 3C, extending plunger 5. Reversion to the original magnetic polarities restores the position of Fig. 3A. Alternatively the polarities of members 1, 3 may be maintained and that of member 2 reversed. The members whose polarity is maintained may have a coil or coils adapted to sustain polarity against demagnetization by proximity to the members whose field is reversible. The magnetic material of the members may be ferrite.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5863668 | 1969-01-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1311842A true GB1311842A (en) | 1973-03-28 |
Family
ID=10482068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1311842D Expired GB1311842A (en) | 1969-01-28 | 1969-01-28 | Electromagnetic actuator |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1311842A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2319184A2 (en) * | 1975-07-25 | 1977-02-18 | Renault | Electromagnetic actuator for hydraulic servo-contactor - has annular induction coil in air gap between case and concentric armature magnet |
| GB2169144A (en) * | 1984-12-15 | 1986-07-02 | Diesel Kiki Co | Electromagnetic actuator |
| GB2243723A (en) * | 1990-05-04 | 1991-11-06 | Teppei Kumada | Electromagnetic actuating device |
-
1969
- 1969-01-28 GB GB1311842D patent/GB1311842A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2319184A2 (en) * | 1975-07-25 | 1977-02-18 | Renault | Electromagnetic actuator for hydraulic servo-contactor - has annular induction coil in air gap between case and concentric armature magnet |
| GB2169144A (en) * | 1984-12-15 | 1986-07-02 | Diesel Kiki Co | Electromagnetic actuator |
| GB2243723A (en) * | 1990-05-04 | 1991-11-06 | Teppei Kumada | Electromagnetic actuating device |
| GB2243723B (en) * | 1990-05-04 | 1994-08-24 | Teppei Kumada | Electromagnetic actuating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |