GB1350614A - Electromagnetic actuating device - Google Patents
Electromagnetic actuating deviceInfo
- Publication number
- GB1350614A GB1350614A GB4030371A GB4030371A GB1350614A GB 1350614 A GB1350614 A GB 1350614A GB 4030371 A GB4030371 A GB 4030371A GB 4030371 A GB4030371 A GB 4030371A GB 1350614 A GB1350614 A GB 1350614A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- operates
- polepiece
- permanent magnet
- soft iron
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/01—Relays in which the armature is maintained in one position by a permanent magnet and freed by energisation of a coil producing an opposing magnetic field
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
Abstract
1350614 Electromagnets PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 27 Aug 1971 [31 Aug 1970] 40303/71 Heading H1P A remanent electromagnetic actuating device has a permanent magnet armature 20 made of finely divided permanent magnetic material bonded in a resilient synthetic material. The armature has a soft iron strip 11 arranged for rotation. The remanent core 3 surrounded by an energizing coil has pole pieces 4, 5 bridged by the permanent magnet armature. The central portion of the permanent magnet armature 20 is polarized across its width in the opposite direction to the end 22 which co-operates by way of a soft iron insert 23 with polepiece 5. In Fig. 1 (not shown) the armature co-operates with identical L-shaped polepieces. In Fig. 2 (not shown) the construction is similar to Fig. 3 except that the permanent magnet of the armature co-operates with an L-shaped polepiece whilst the soft iron strip co-operates with a straight polepiece. Fig. 4 (not shown) is similar to Fig. 2 except for the provision of a permanent magnet between the polepieces. In Fig. 5 (not shown) the armature co-operates with a pot-shaped electromagnet, bridging a central polepiece and a surrounding annular polepiece. The device may be used for moving a rubber thrust roller which in the armature attracted position presses a magnetic recording tape against a capstan.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7012890A NL7012890A (en) | 1970-08-31 | 1970-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1350614A true GB1350614A (en) | 1974-04-18 |
Family
ID=19810915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4030371A Expired GB1350614A (en) | 1970-08-31 | 1971-08-27 | Electromagnetic actuating device |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3715695A (en) |
| AT (1) | AT314018B (en) |
| BE (1) | BE771966A (en) |
| DE (1) | DE2139405C3 (en) |
| FR (1) | FR2103649B1 (en) |
| GB (1) | GB1350614A (en) |
| NL (1) | NL7012890A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2194100A (en) * | 1986-08-08 | 1988-02-24 | Seiji Yamamoto | Magnetically operated actuator |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3068769D1 (en) * | 1979-04-05 | 1984-09-06 | Motor Magnetics Inc | Electric device or machine |
| FR2520152B1 (en) * | 1982-01-20 | 1986-02-28 | Telemecanique Electrique | ELECTRO-MAGNET WITH MOBILE EQUIPMENT WITH PERMANENT MAGNET WITH MONOSTABLE OPERATION |
| DE3225777C2 (en) * | 1982-07-09 | 1984-05-10 | Siemens AG, 1000 Berlin und 8000 München | Polarized relay |
| FR2554960B1 (en) * | 1983-11-16 | 1987-06-26 | Telemecanique Electrique | ELECTRO-MAGNET COMPRISING CYLINDER HEADS AND AN ARMATURE COMPRISING A PERMANENT MAGNET PROVIDED ON ITS POLAR FACES, OF POLAR PARTS EXTENDING THE AXIS OF THE MAGNET, THIS AXIS BEING PERPENDICULAR TO THE DIRECTION OF MOVEMENT |
| DE102007011050A1 (en) * | 2007-03-07 | 2008-09-11 | Robert Bosch Gmbh | Magnetic circuit for solenoid valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE57706C (en) * | Dr. H. HEYNE in Landsbut, Bayern | Dry process for glue and gelatin solutions | ||
| DE968353C (en) * | 1952-01-18 | 1958-02-06 | Siemens Ag | Arrangement to prevent contact bouncing and to reduce switching noise in electromagnetically operated switching devices |
-
1970
- 1970-08-31 NL NL7012890A patent/NL7012890A/xx unknown
-
1971
- 1971-08-06 DE DE2139405A patent/DE2139405C3/en not_active Expired
- 1971-08-25 US US00174731A patent/US3715695A/en not_active Expired - Lifetime
- 1971-08-27 AT AT751271A patent/AT314018B/en not_active IP Right Cessation
- 1971-08-27 GB GB4030371A patent/GB1350614A/en not_active Expired
- 1971-08-30 BE BE771966A patent/BE771966A/en not_active IP Right Cessation
- 1971-08-31 FR FR7131477A patent/FR2103649B1/fr not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2194100A (en) * | 1986-08-08 | 1988-02-24 | Seiji Yamamoto | Magnetically operated actuator |
| US4755782A (en) * | 1986-08-08 | 1988-07-05 | Seiji Yamamoto | Magnetically operated actuator having plural permanent magnet means |
| GB2194100B (en) * | 1986-08-08 | 1989-12-13 | Seiji Yamamoto | Magnetically operated actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| AT314018B (en) | 1974-03-11 |
| FR2103649A1 (en) | 1972-04-14 |
| BE771966A (en) | 1972-02-29 |
| US3715695A (en) | 1973-02-06 |
| DE2139405C3 (en) | 1978-11-30 |
| NL7012890A (en) | 1972-03-02 |
| DE2139405A1 (en) | 1973-08-30 |
| DE2139405B2 (en) | 1978-04-06 |
| FR2103649B1 (en) | 1976-09-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |