GB450298A - Improvements in and relating to electric thermal relays - Google Patents
Improvements in and relating to electric thermal relaysInfo
- Publication number
- GB450298A GB450298A GB35977/35A GB3597735A GB450298A GB 450298 A GB450298 A GB 450298A GB 35977/35 A GB35977/35 A GB 35977/35A GB 3597735 A GB3597735 A GB 3597735A GB 450298 A GB450298 A GB 450298A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thermal
- dec
- oil
- plunger
- round
- 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
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Thermally Actuated Switches (AREA)
Abstract
450,298. Thermal switches. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Dec. 30, 1935, No. 35977. Convention date, Dec. 29, 1934. [Class 38 (v)] A thermal overload relay comprises a bimetallic or other thermal element 16 arranged in a slot in an iron core 13 which is surrounded by a cylindrical conductor 17 which may be heated by currents induced from a primary winding 33. The bimetallic strip 16 when heated moves upwards a plunger 23 to engage a spring 27 and move a contact 25 away from an adjustable fixed contact 24. The core and bimetallic strip are heat insulated by means of an insulating cylinder 21 and insulating members 10, 19. The whole device is adapted to be immersed in oil, some of which enters round the loosely fitting plunger 23 while air escapes round the loosely fitting parts 10, 19, 21 which form otherwise a closed container. The relatively small amount of oil in this container and its thermal insulation allows the thermal element to heat up quickly.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US450298XA | 1934-12-29 | 1934-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB450298A true GB450298A (en) | 1936-07-14 |
Family
ID=21935627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35977/35A Expired GB450298A (en) | 1934-12-29 | 1935-12-30 | Improvements in and relating to electric thermal relays |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB450298A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE747776C (en) * | 1939-04-13 | 1944-10-13 | Bimetal release heated by a transducer |
-
1935
- 1935-12-30 GB GB35977/35A patent/GB450298A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE747776C (en) * | 1939-04-13 | 1944-10-13 | Bimetal release heated by a transducer |
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