GB757415A - Electromagnetic switches - Google Patents
Electromagnetic switchesInfo
- Publication number
- GB757415A GB757415A GB46354A GB46354A GB757415A GB 757415 A GB757415 A GB 757415A GB 46354 A GB46354 A GB 46354A GB 46354 A GB46354 A GB 46354A GB 757415 A GB757415 A GB 757415A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cores
- magnetic circuit
- magnetic
- armature
- jan
- 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
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1054—Means for avoiding unauthorised release
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/02—Non-polarised relays
- H01H51/20—Non-polarised relays with two or more independent 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
- H01H71/34—Electromagnetic mechanisms having two or more armatures controlled by a common winding
- H01H71/345—Electromagnetic mechanisms having two or more armatures controlled by a common winding having a delayed movable core and a movable armature
-
- 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
- H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay
- H01H71/443—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay with dash-pot
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
757,415. Electromagnetic switches. ROTAX, Ltd. Jan. 6, 1955 [Jan. 7, 1954], No. 463/54. Class 38(5) A switch responsive to sustained but not transient overload and insensitive to acceleration, comprises a winding a on a non-magnetic bush b serving as a dashpot cylinder for two magnetic cores d, pole pieces c and an armature e completing the magnetic circuit. Springs f, g normally hold the cores in the position shown. A sufficient current in the winding a causes the cores to move towards each other with a delay produced by the dashpot action, the increased inductance of the magnetic circuit causing pivoting of the armature e against its spring j to close contacts h, i. An acceleration causes movement of the cores in the same direction and thus no change occurs in the magnetic circuit inductance.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB46354A GB757415A (en) | 1954-01-07 | 1954-01-07 | Electromagnetic switches |
US489659A US2878338A (en) | 1954-01-07 | 1955-02-21 | Electric switches |
FR1156763D FR1156763A (en) | 1954-01-07 | 1956-09-14 | Electromagnetic switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB46354A GB757415A (en) | 1954-01-07 | 1954-01-07 | Electromagnetic switches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB757415A true GB757415A (en) | 1956-09-19 |
Family
ID=9704788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB46354A Expired GB757415A (en) | 1954-01-07 | 1954-01-07 | Electromagnetic switches |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1156763A (en) |
GB (1) | GB757415A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009024176A1 (en) * | 2007-08-21 | 2009-02-26 | Siemens Aktiengesellschaft | Magnetic/hydraulic trip unit for molded case circuit breakers (mccbs) |
-
1954
- 1954-01-07 GB GB46354A patent/GB757415A/en not_active Expired
-
1956
- 1956-09-14 FR FR1156763D patent/FR1156763A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009024176A1 (en) * | 2007-08-21 | 2009-02-26 | Siemens Aktiengesellschaft | Magnetic/hydraulic trip unit for molded case circuit breakers (mccbs) |
Also Published As
Publication number | Publication date |
---|---|
FR1156763A (en) | 1958-05-21 |
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