GB394842A - Improvements in or relating to short-time electric switches especially for lighting staircases at night - Google Patents
Improvements in or relating to short-time electric switches especially for lighting staircases at nightInfo
- Publication number
- GB394842A GB394842A GB25985/32A GB2598532A GB394842A GB 394842 A GB394842 A GB 394842A GB 25985/32 A GB25985/32 A GB 25985/32A GB 2598532 A GB2598532 A GB 2598532A GB 394842 A GB394842 A GB 394842A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- circuit
- armature
- electromagnet
- lever
- 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
- 238000010438 heat treatment Methods 0.000 abstract 3
- 238000010276 construction Methods 0.000 abstract 1
- 238000013021 overheating Methods 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
- H01H43/30—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action
- H01H43/301—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action based on the expansion or contraction of a material
- H01H43/302—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action based on the expansion or contraction of a material of solid bodies
- H01H43/303—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action based on the expansion or contraction of a material of solid bodies of one single solid body, e.g. hot wire
Landscapes
- Switches With Compound Operations (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT394842X | 1931-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB394842A true GB394842A (en) | 1933-07-06 |
Family
ID=11246222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25985/32A Expired GB394842A (en) | 1931-09-19 | 1932-09-19 | Improvements in or relating to short-time electric switches especially for lighting staircases at night |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR744703A (enrdf_load_stackoverflow) |
| GB (1) | GB394842A (enrdf_load_stackoverflow) |
-
0
- FR FR744703D patent/FR744703A/fr not_active Expired
-
1932
- 1932-09-19 GB GB25985/32A patent/GB394842A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR744703A (enrdf_load_stackoverflow) | 1933-04-26 |
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