FR21948E - Device devices for preventing train collisions - Google Patents
Device devices for preventing train collisionsInfo
- Publication number
- FR21948E FR21948E FR21948A FR21948DA FR21948E FR 21948 E FR21948 E FR 21948E FR 21948 A FR21948 A FR 21948A FR 21948D A FR21948D A FR 21948DA FR 21948 E FR21948 E FR 21948E
- Authority
- FR
- France
- Prior art keywords
- device devices
- preventing train
- train collisions
- collisions
- preventing
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
- B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
- B61L3/04—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling mechanically
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR21948T | 1919-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR21948E true FR21948E (en) | 1921-04-09 |
Family
ID=8660900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR21948A Expired FR21948E (en) | 1919-11-28 | 1919-11-28 | Device devices for preventing train collisions |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR21948E (en) |
-
1919
- 1919-11-28 FR FR21948A patent/FR21948E/en not_active Expired
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