GB1278089A - Improvements in or relating to electromagnetic holding devices - Google Patents
Improvements in or relating to electromagnetic holding devicesInfo
- Publication number
- GB1278089A GB1278089A GB48633/69A GB4863369A GB1278089A GB 1278089 A GB1278089 A GB 1278089A GB 48633/69 A GB48633/69 A GB 48633/69A GB 4863369 A GB4863369 A GB 4863369A GB 1278089 A GB1278089 A GB 1278089A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- yoke
- limb
- permanent magnet
- flux
- 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
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/02—Non-polarised relays
- H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
- H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
- H01H51/10—Contacts retained open or closed by a latch which is controlled by an electromagnet
-
- 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
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/32—Electromagnetic mechanisms having permanently magnetised part
- H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
- H01H71/323—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with rotatable armature
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
- Breakers (AREA)
Abstract
1278089 Magnetic switch details SOC D APPAREILLAGE ELECTRIQUE SAPAREL 3 Oct 1969 [6 Jan 1969] 48633/69 Heading H1N An electromagnetic holding device with a spring-biased armature releasable to trip a circuit-breaker has a U-shaped yoke 1 with a release coil 4 on one limb 3 and a permanent magnet 5 adjacent the second limb 2 on the free end of which the armature is rockable on two relatively narrow spaced projections 11 which are between spaced rounded projections 8 of a non-magnetic member 6 which fits over the limb 2 and above the permanent magnet 5. The end of the first limb 3 has a relatively narrow tooth 22 for engagement by the armature in its attracted position and a flux collector 41, 43 is mounted on the member 6 to convey flux from the permanent magnet to the armature. A flux diverting regulating screw 25 is threaded into the yoke 1 and is engaged by an edge 26 of the thermoplastic coil former to restrain the screw in a set position. The surface of the armature which rocks on the yoke may be highly polished and the co-operating yoke parts may be given a matt finish by cold hammering. The base of the yoke 1 is cut away at 21 to increase its reluctance and it is provided with bosses 18 on which the permanent magnet 5 rests. The flux collector 41, 43 may be made of a material such that the effects of temperature change or its reluctance compensates for the effect of temperature change on the other components.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT1027368A AT278954B (en) | 1968-10-22 | 1968-10-22 | Magnetic trigger |
FR6900052A FR2028606A5 (en) | 1968-10-22 | 1969-01-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1278089A true GB1278089A (en) | 1972-06-14 |
Family
ID=25605953
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB48633/69A Expired GB1278089A (en) | 1968-10-22 | 1969-10-03 | Improvements in or relating to electromagnetic holding devices |
GB1232725D Expired GB1232725A (en) | 1968-10-22 | 1969-10-21 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1232725D Expired GB1232725A (en) | 1968-10-22 | 1969-10-21 |
Country Status (6)
Country | Link |
---|---|
US (1) | US3614689A (en) |
BE (1) | BE735809A (en) |
CH (1) | CH489877A (en) |
DE (1) | DE1942273C3 (en) |
FR (2) | FR2028606A5 (en) |
GB (2) | GB1278089A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2119592C3 (en) * | 1971-04-22 | 1975-02-20 | Union Special Maschinenfabrik Gmbh, 7000 Stuttgart | Controlled thread tensioner for sewing machines |
DE2630955C3 (en) * | 1976-07-07 | 1983-12-22 | Paul & Siedler Gmbh & Co Kg, 1000 Berlin | Arrangement for fastening the magnetic yoke of an electrical relay to the carrier made of insulating material |
FR2596577B1 (en) * | 1986-03-28 | 1993-04-30 | Serd Soc Et Realisa Disjonct | POLARIZED TRIGGER |
FR2618249B1 (en) * | 1987-07-16 | 1989-11-17 | Telemecanique Electrique | ELECTRO-MAGNET WITH PERMANENT MAGNET HELD BY A CAGE. |
ZA936741B (en) * | 1992-09-14 | 1994-04-05 | Circuit Breaker Ind | A shunt trip device |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1743494A (en) * | 1927-10-12 | 1930-01-14 | Joseph W Snyder | Pole-changer transmitter |
US2580123A (en) * | 1945-07-04 | 1951-12-25 | Bell Telephone Labor Inc | Relay |
US2991395A (en) * | 1956-10-04 | 1961-07-04 | Stewart Warner Corp | Speed responsive control device |
NL275584A (en) * | 1961-03-06 | 1900-01-01 | ||
US3340520A (en) * | 1964-05-14 | 1967-09-05 | Gen Motors Corp | Battery charge indicator |
US3317871A (en) * | 1965-09-20 | 1967-05-02 | Leach Corp | Magnetically operated actuator |
FR1479460A (en) * | 1966-03-22 | 1967-05-05 | Ind Electr De La Seine L | Sensitive electromagnetic release with reset |
US3475708A (en) * | 1966-05-27 | 1969-10-28 | Fuchs Electrical Ind Proprieta | Relay having a permanent magnetic shunt circuit |
-
1969
- 1969-01-06 FR FR6900052A patent/FR2028606A5/fr not_active Expired
- 1969-05-28 CH CH808469A patent/CH489877A/en not_active IP Right Cessation
- 1969-06-25 FR FR6921356A patent/FR2021190A1/fr not_active Withdrawn
- 1969-07-08 BE BE735809D patent/BE735809A/xx not_active IP Right Cessation
- 1969-08-20 DE DE1942273A patent/DE1942273C3/en not_active Expired
- 1969-10-03 GB GB48633/69A patent/GB1278089A/en not_active Expired
- 1969-10-21 GB GB1232725D patent/GB1232725A/en not_active Expired
- 1969-11-07 US US875214A patent/US3614689A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CH489877A (en) | 1970-04-30 |
GB1232725A (en) | 1971-05-19 |
US3614689A (en) | 1971-10-19 |
DE1942273C3 (en) | 1978-11-02 |
DE1942273B2 (en) | 1978-03-16 |
DE1942273A1 (en) | 1970-07-16 |
FR2021190A1 (en) | 1970-07-17 |
BE735809A (en) | 1969-12-16 |
FR2028606A5 (en) | 1970-10-09 |
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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 |