BE477782A - - Google Patents
Info
- Publication number
- BE477782A BE477782A BE477782DA BE477782A BE 477782 A BE477782 A BE 477782A BE 477782D A BE477782D A BE 477782DA BE 477782 A BE477782 A BE 477782A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Food-Manufacturing Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US355793A US2300790A (en) | 1940-09-07 | 1940-09-07 | Electrical relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE477782A true BE477782A (en) |
Family
ID=23398871
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE477696D BE477696A (en) | 1940-09-07 | ||
| BE477782D BE477782A (en) | 1940-09-07 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE477696D BE477696A (en) | 1940-09-07 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2300790A (en) |
| BE (2) | BE477782A (en) |
| FR (2) | FR950558A (en) |
| GB (1) | GB546980A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2439248A (en) * | 1943-10-04 | 1948-04-06 | Gregory Motors Inc | Electromotor |
| US2485624A (en) * | 1944-08-29 | 1949-10-25 | Int Standard Electric Corp | Vibrator relay |
| DE851075C (en) * | 1949-12-18 | 1952-10-02 | Siemens Ag | Arrangement for relays in railway safety |
-
0
- BE BE477696D patent/BE477696A/xx unknown
- BE BE477782D patent/BE477782A/xx unknown
-
1940
- 1940-09-07 US US355793A patent/US2300790A/en not_active Expired - Lifetime
-
1941
- 1941-02-06 GB GB1595/41A patent/GB546980A/en not_active Expired
-
1947
- 1947-07-31 FR FR950558D patent/FR950558A/en not_active Expired
- 1947-08-04 FR FR62303D patent/FR62303E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2300790A (en) | 1942-11-03 |
| FR62303E (en) | 1955-06-13 |
| GB546980A (en) | 1942-08-07 |
| FR950558A (en) | 1949-09-30 |
| BE477696A (en) |