DE217729C - - Google Patents
Info
- Publication number
- DE217729C DE217729C DENDAT217729D DE217729DA DE217729C DE 217729 C DE217729 C DE 217729C DE NDAT217729 D DENDAT217729 D DE NDAT217729D DE 217729D A DE217729D A DE 217729DA DE 217729 C DE217729 C DE 217729C
- Authority
- DE
- Germany
- Prior art keywords
- barrier
- closed
- paper strip
- rail contacts
- switching mechanism
- 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.)
- Active
Links
- 230000004888 barrier function Effects 0.000 claims description 13
- 238000013459 approach Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 description 1
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
- B61L29/30—Supervision, e.g. monitoring arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Recording Measured Values (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE217729C true DE217729C (cs) |
Family
ID=479016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT217729D Active DE217729C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE217729C (cs) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480939A (en) * | 1982-12-27 | 1984-11-06 | Garthop Upton | Soap holding and dispensing means |
-
0
- DE DENDAT217729D patent/DE217729C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480939A (en) * | 1982-12-27 | 1984-11-06 | Garthop Upton | Soap holding and dispensing means |
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