GB575823A - Improvements in and relating to electric switches with electrodynamically-reinforcedcontact - Google Patents
Improvements in and relating to electric switches with electrodynamically-reinforcedcontactInfo
- Publication number
- GB575823A GB575823A GB6805/44A GB680544A GB575823A GB 575823 A GB575823 A GB 575823A GB 6805/44 A GB6805/44 A GB 6805/44A GB 680544 A GB680544 A GB 680544A GB 575823 A GB575823 A GB 575823A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blade
- contact
- april
- conductor
- displaced position
- 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
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
Landscapes
- Thermally Actuated Switches (AREA)
Abstract
575,823. Electromagnetic switches; thermal switches. BRITISH THOMSON-HOUSTON CO., Ltd. April 13, 1944, No. 6805. Convention date, April 16, 1943. [Class 38 (v)] A thermal switch consists of a contact 13 mounted on a blade 14 fixed to block 15 and biased towards contact 12. A conductor 16 is mounted alongside the blade 14 and connected in series therewith. Their currents are in the same direction and the resultant electromagnetic attraction holds the contacts together until the pressure from rod 21 on a bimetallic strip 19 acting on the blade causes them to separate with a snap action. In Fig. 2 (not shown) a second fixed contact and conductor are arranged on the opposite side of the blade, whereby the latter is held electromagnetically in the displaced position and an alternative connection to the outside circuit is thereby made. The conductors are of different resistances so that when the contact is in the displaced position there is a reduction in the current passing to the heater.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US575823XA | 1943-04-16 | 1943-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB575823A true GB575823A (en) | 1946-03-06 |
Family
ID=22011496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6805/44A Expired GB575823A (en) | 1943-04-16 | 1944-04-13 | Improvements in and relating to electric switches with electrodynamically-reinforcedcontact |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB575823A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3162743A (en) * | 1961-09-19 | 1964-12-22 | Nettie R Mcilvaine | Thermally actuated switch compensated for ambient temperature variations |
| EP0471893A2 (en) * | 1990-08-21 | 1992-02-26 | Siemens Aktiengesellschaft | Contact spring set for high electrical currents |
| EP1061542A1 (en) * | 1999-06-18 | 2000-12-20 | Schneider Electric Industries SA | Electromagnetic multipolar switch |
-
1944
- 1944-04-13 GB GB6805/44A patent/GB575823A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3162743A (en) * | 1961-09-19 | 1964-12-22 | Nettie R Mcilvaine | Thermally actuated switch compensated for ambient temperature variations |
| EP0471893A2 (en) * | 1990-08-21 | 1992-02-26 | Siemens Aktiengesellschaft | Contact spring set for high electrical currents |
| EP0471893A3 (en) * | 1990-08-21 | 1992-08-05 | Siemens Aktiengesellschaft | Contact spring set for high electrical currents |
| EP1061542A1 (en) * | 1999-06-18 | 2000-12-20 | Schneider Electric Industries SA | Electromagnetic multipolar switch |
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