GB787391A - Improvements in or relating to electro-mechanical transducers, particularly electro-magnetic relays - Google Patents
Improvements in or relating to electro-mechanical transducers, particularly electro-magnetic relaysInfo
- Publication number
- GB787391A GB787391A GB2884154A GB2884154A GB787391A GB 787391 A GB787391 A GB 787391A GB 2884154 A GB2884154 A GB 2884154A GB 2884154 A GB2884154 A GB 2884154A GB 787391 A GB787391 A GB 787391A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rod
- winding
- contacts
- electro
- magnetic
- 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
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
- H01H50/42—Auxiliary magnetic circuits, e.g. for maintaining armature in, or returning armature to, position of rest, for damping or accelerating movement
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
787,391. Electromagnetic relays. SMITH & SONS (ENGLAND), Ltd., S. Oct. 10, 1955 [Oct. 6, 1954], No. 28841/54. Class 38 (5). A relay comprises a winding 11 on an aluminium former 6 mounted on a rod 7, the winding being positioned in an annular air gap 4 formed between an annular permanent magnet 1 and a magnetic plate 3 whereby on energization of the winding the winding assembly moves upwards and the upper end of the rod closes a pair of contacts 18, 19. A magnetic case 2 connects the parts 1, 3. The rod 7 is slidable in bearings 8 within the magnet 1 and the lower end normally abuts a set screw 10 adjustable to vary the relay operating current. The rod 7 carries a magnetic cross-bar 14 having its ends adjacent adjustable polepieces 15 mounted on the plate 3 whereby leakage flux produces a restraint on the initial movement of the rod until the bar moves out of alignment with the polepieces and the contacts 18, 19 then close with a snap action. A transparent cover 21 encloses the contacts. The relay is relatively insensitive to vibration owing to the clamping effect produced by eddy currents generated in the conducting former 6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2884154A GB787391A (en) | 1954-10-06 | 1954-10-06 | Improvements in or relating to electro-mechanical transducers, particularly electro-magnetic relays |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2884154A GB787391A (en) | 1954-10-06 | 1954-10-06 | Improvements in or relating to electro-mechanical transducers, particularly electro-magnetic relays |
Publications (1)
Publication Number | Publication Date |
---|---|
GB787391A true GB787391A (en) | 1957-12-04 |
Family
ID=10282019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2884154A Expired GB787391A (en) | 1954-10-06 | 1954-10-06 | Improvements in or relating to electro-mechanical transducers, particularly electro-magnetic relays |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB787391A (en) |
-
1954
- 1954-10-06 GB GB2884154A patent/GB787391A/en not_active Expired
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