BE477674A - - Google Patents
Info
- Publication number
- BE477674A BE477674A BE477674DA BE477674A BE 477674 A BE477674 A BE 477674A BE 477674D A BE477674D A BE 477674DA BE 477674 A BE477674 A BE 477674A
- Authority
- BE
- Belgium
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/08—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only
- B61L23/12—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only partly operated by train
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/32—Latching movable parts mechanically
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/30—Electromagnetic relays specially adapted for actuation by ac
- H01H51/32—Frequency relays; Mechanically-tuned relays
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electromagnets (AREA)
- Braking Arrangements (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US304811A US2285890A (en) | 1939-11-16 | 1939-11-16 | Stationary contact |
| US431399A US2318738A (en) | 1939-11-16 | 1942-02-18 | Holding means for instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE477674A true BE477674A (en) |
Family
ID=26974245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE477674D BE477674A (en) | 1939-11-16 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2318738A (en) |
| BE (1) | BE477674A (en) |
| FR (1) | FR951344A (en) |
| GB (1) | GB560079A (en) |
-
0
- BE BE477674D patent/BE477674A/xx unknown
-
1940
- 1940-10-08 GB GB14999/40A patent/GB560079A/en not_active Expired
-
1942
- 1942-02-18 US US431399A patent/US2318738A/en not_active Expired - Lifetime
-
1947
- 1947-08-06 FR FR951344D patent/FR951344A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB560079A (en) | 1944-03-20 |
| US2318738A (en) | 1943-05-11 |
| FR951344A (en) | 1949-10-21 |