FR831675A - Safety device for railways - Google Patents
Safety device for railwaysInfo
- Publication number
- FR831675A FR831675A FR831675DA FR831675A FR 831675 A FR831675 A FR 831675A FR 831675D A FR831675D A FR 831675DA FR 831675 A FR831675 A FR 831675A
- Authority
- FR
- France
- Prior art keywords
- railways
- safety device
- safety
- 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 |
|---|---|---|---|
| FR831675T | 1937-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR831675A true FR831675A (en) | 1938-09-12 |
Family
ID=9293365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR831675D Expired FR831675A (en) | 1937-04-17 | 1937-04-17 | Safety device for railways |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR831675A (en) |
-
1937
- 1937-04-17 FR FR831675D patent/FR831675A/en not_active Expired
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