GB665181A - Improvements relating to thermal overload cut-outs for electrical apparatus - Google Patents
Improvements relating to thermal overload cut-outs for electrical apparatusInfo
- Publication number
- GB665181A GB665181A GB1411949A GB1411949A GB665181A GB 665181 A GB665181 A GB 665181A GB 1411949 A GB1411949 A GB 1411949A GB 1411949 A GB1411949 A GB 1411949A GB 665181 A GB665181 A GB 665181A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bimetal
- contacts
- outs
- electrical apparatus
- strip
- 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
- H01H81/00—Protective switches in which contacts are normally closed but are repeatedly opened and reclosed as long as a condition causing excess current persists, e.g. for current limiting
- H01H81/02—Protective switches in which contacts are normally closed but are repeatedly opened and reclosed as long as a condition causing excess current persists, e.g. for current limiting electrothermally operated
Landscapes
- Thermally Actuated Switches (AREA)
Abstract
665,181. Thermal switches; snap-action switches. HOOVER (ELECTRIC MOTORS), Ltd., and STARKEY, C. V. May 12, 1950. [May 26, 1949] No. 14119/49. Class 38 (v). A switch especially for opening the circuit of a motor on excessive temperature or high current, comprises a bimetal strip 10, heated by the current, and contacts 11, 12, the latter and the bimetal 10 being carried by overlapping metal strips 13, 14, which are rigidly connected together by rivets 15, 16, and are insulated from each other by washers 17 ... 20. The bimetal 10 is welded to a tongue 21 on strip 14 and carries a T-shaped member 28 supporting a trifurcated blade spring 22 carrying the contact 11, the opening movement of which is adjustable by a screw 32 so as to set the temperature at which the bimetal recloses the contacts. The contacts may, alternatively, be reclosed by a push-button. The strips 13, 14 are fixed to the casing 25 by lead-in terminals .24, and the fixed contact 12 is formed by the head of a screw received in rivet 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1411949A GB665181A (en) | 1949-05-26 | 1949-05-26 | Improvements relating to thermal overload cut-outs for electrical apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1411949A GB665181A (en) | 1949-05-26 | 1949-05-26 | Improvements relating to thermal overload cut-outs for electrical apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB665181A true GB665181A (en) | 1952-01-16 |
Family
ID=10035342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1411949A Expired GB665181A (en) | 1949-05-26 | 1949-05-26 | Improvements relating to thermal overload cut-outs for electrical apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB665181A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321014A (en) * | 2018-02-07 | 2018-07-24 | 佛山市顺德区汇控电器制造有限公司 | A kind of anti-reset temperature controller of dual fail-safe |
-
1949
- 1949-05-26 GB GB1411949A patent/GB665181A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321014A (en) * | 2018-02-07 | 2018-07-24 | 佛山市顺德区汇控电器制造有限公司 | A kind of anti-reset temperature controller of dual fail-safe |
| CN108321014B (en) * | 2018-02-07 | 2024-03-08 | 佛山市顺德区汇控电器制造有限公司 | Double-insurance reset-preventing temperature controller |
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