GB819376A - Improvements in electro-magnetic overload units for electrical apparatus - Google Patents
Improvements in electro-magnetic overload units for electrical apparatusInfo
- Publication number
- GB819376A GB819376A GB3202356A GB3202356A GB819376A GB 819376 A GB819376 A GB 819376A GB 3202356 A GB3202356 A GB 3202356A GB 3202356 A GB3202356 A GB 3202356A GB 819376 A GB819376 A GB 819376A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- dashpot
- washer
- collar
- relation
- 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
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/06—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electromagnetic opening
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
819,376. Electromagnetic switches. COLNE SWITCHGEAR (K. & W.) Ltd. Oct. 21, 1957 [Oct. 20, 1956], No. 32023/56. Class 38 (5). A time-lag overload device has separate adjustment for armature position in relation to the operating coil, and for a dashpot in relation to a piston attached to the armature. A magnetic casing B encloses the coil C and supports a non-magnetic member D by means of a screw D<SP>2</SP> and adjusting nut D<SP>3</SP> with compression spring D<SP>4</SP>. A tubular part D<SP>1</SP> extends into the core and encloses the armature A which has an extension rod A<SP>1</SP> and collar A<SP>2</SP> with a washer A<SP>3</SP> movable between the collar A<SP>2</SP> and a circlip A4. When the armature is attracted the collar A<SP>2</SP> and washer A<SP>3</SP> form a piston in the smallerdiameter part of the dashpot H screwed into the member D. The current setting is adjusted by means of the nut D<SP>3</SP> moving the member D and with it the armature A in relation to the coil C. The time-lag is adjusted by screwing the dashpot H into or out of the member D and thereby altering the amount of travel of the washer in the smaller-diameter part of the dashpot. The armature, when attracted, strikes a pin E which opens spring-biased contacts F<SP>1</SP>. In Figs. 2 and 3 (not shown), three units are described having calibrated scales for current and time-lag settings form a three-phase device with their pins E acting on a common pivoted plate which operates tripping contacts and has a latch to retain it in the operated position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3202356A GB819376A (en) | 1956-10-20 | 1956-10-20 | Improvements in electro-magnetic overload units for electrical apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3202356A GB819376A (en) | 1956-10-20 | 1956-10-20 | Improvements in electro-magnetic overload units for electrical apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB819376A true GB819376A (en) | 1959-09-02 |
Family
ID=10331898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3202356A Expired GB819376A (en) | 1956-10-20 | 1956-10-20 | Improvements in electro-magnetic overload units for electrical apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB819376A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5663700A (en) * | 1995-08-25 | 1997-09-02 | Trombetta Corporation | Sound dampening solenoid |
WO2010043977A2 (en) | 2008-10-13 | 2010-04-22 | Institute For Research In Biomedicine | Dengue virus neutralizing antibodies and uses thereof |
WO2013011347A1 (en) | 2011-07-18 | 2013-01-24 | Institute For Research In Biomedicine | Neutralizing anti-influenza a virus antibodies and uses thereof |
US9368266B2 (en) | 2014-07-18 | 2016-06-14 | Trumpet Holdings, Inc. | Electric solenoid structure having elastomeric biasing member |
-
1956
- 1956-10-20 GB GB3202356A patent/GB819376A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5663700A (en) * | 1995-08-25 | 1997-09-02 | Trombetta Corporation | Sound dampening solenoid |
WO2010043977A2 (en) | 2008-10-13 | 2010-04-22 | Institute For Research In Biomedicine | Dengue virus neutralizing antibodies and uses thereof |
WO2013011347A1 (en) | 2011-07-18 | 2013-01-24 | Institute For Research In Biomedicine | Neutralizing anti-influenza a virus antibodies and uses thereof |
US9368266B2 (en) | 2014-07-18 | 2016-06-14 | Trumpet Holdings, Inc. | Electric solenoid structure having elastomeric biasing member |
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