FR935544A - Railroad safety device - Google Patents
Railroad safety deviceInfo
- Publication number
- FR935544A FR935544A FR935544DA FR935544A FR 935544 A FR935544 A FR 935544A FR 935544D A FR935544D A FR 935544DA FR 935544 A FR935544 A FR 935544A
- Authority
- FR
- France
- Prior art keywords
- safety device
- railroad safety
- railroad
- 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
- B61L3/08—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 electrically
- B61L3/12—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 electrically using magnetic or electrostatic induction; using radio waves
- B61L3/125—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 electrically using magnetic or electrostatic induction; using radio waves using short-range radio transmission
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR935544T | 1946-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR935544A true FR935544A (en) | 1948-06-22 |
Family
ID=9456832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR935544D Expired FR935544A (en) | 1946-11-04 | 1946-11-04 | Railroad safety device |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR935544A (en) |
-
1946
- 1946-11-04 FR FR935544D patent/FR935544A/en not_active Expired
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