FR563687A - Optical barrier device for electric railway road crossings - Google Patents
Optical barrier device for electric railway road crossingsInfo
- Publication number
- FR563687A FR563687A FR563687DA FR563687A FR 563687 A FR563687 A FR 563687A FR 563687D A FR563687D A FR 563687DA FR 563687 A FR563687 A FR 563687A
- Authority
- FR
- France
- Prior art keywords
- barrier device
- electric railway
- optical barrier
- railway road
- road crossings
- 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
- B61L29/00—Safety means for rail/road crossing traffic
- B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
- B61L29/28—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated
- B61L29/286—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated using conductor circuits controlled by the vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH563687X | 1922-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR563687A true FR563687A (en) | 1923-12-11 |
Family
ID=4520467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR563687D Expired FR563687A (en) | 1922-03-18 | 1923-03-13 | Optical barrier device for electric railway road crossings |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR563687A (en) |
-
1923
- 1923-03-13 FR FR563687D patent/FR563687A/en not_active Expired
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