FR2243101B1 - - Google Patents
Info
- Publication number
- FR2243101B1 FR2243101B1 FR7430364A FR7430364A FR2243101B1 FR 2243101 B1 FR2243101 B1 FR 2243101B1 FR 7430364 A FR7430364 A FR 7430364A FR 7430364 A FR7430364 A FR 7430364A FR 2243101 B1 FR2243101 B1 FR 2243101B1
- Authority
- FR
- France
- 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
- B61L1/00—Devices along the route controlled by interaction with the vehicle or vehicle train, e.g. pedals
- B61L1/18—Railway track circuits
- B61L1/181—Details
- B61L1/187—Use of alternating current
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US395110A US3897921A (en) | 1973-09-07 | 1973-09-07 | Interlocking track circuits |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2243101A1 FR2243101A1 (fr) | 1975-04-04 |
| FR2243101B1 true FR2243101B1 (fr) | 1979-01-05 |
Family
ID=23561733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7430364A Expired FR2243101B1 (fr) | 1973-09-07 | 1974-09-06 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3897921A (fr) |
| JP (1) | JPS5072309A (fr) |
| CA (1) | CA1020263A (fr) |
| FR (1) | FR2243101B1 (fr) |
| GB (1) | GB1483642A (fr) |
| IT (1) | IT1021182B (fr) |
| NL (1) | NL7411317A (fr) |
| ZA (1) | ZA744946B (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4728063A (en) * | 1986-08-07 | 1988-03-01 | General Signal Corp. | Railway signalling system especially for broken rail detection |
| US4878638A (en) * | 1987-01-12 | 1989-11-07 | General Signal Corporation | Combination frequency loop coupling for railway track signalling |
| US9150228B2 (en) * | 2012-07-13 | 2015-10-06 | Grappone Technologies Inc. | Track circuit providing enhanced broken rail detection |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3328581A (en) * | 1966-06-16 | 1967-06-27 | Westinghouse Air Brake Co | Rapid transit speed control system |
| US3450874A (en) * | 1967-03-31 | 1969-06-17 | Gen Electric | Railway track circuit |
| US3526378A (en) * | 1967-08-23 | 1970-09-01 | Westinghouse Electric Corp | Signaling system for determining the presence of a train vehicle |
| US3524054A (en) * | 1968-01-08 | 1970-08-11 | Gen Signal Corp | High frequency track circuits for rail-roads interrelated at switches and crossovers |
| US3666217A (en) * | 1970-05-04 | 1972-05-30 | Gen Signal Corp | Track communication system for continuous rail |
-
1973
- 1973-09-07 US US395110A patent/US3897921A/en not_active Expired - Lifetime
-
1974
- 1974-07-22 CA CA205,334A patent/CA1020263A/en not_active Expired
- 1974-07-31 GB GB33803/74A patent/GB1483642A/en not_active Expired
- 1974-08-02 ZA ZA00744946A patent/ZA744946B/xx unknown
- 1974-08-26 NL NL7411317A patent/NL7411317A/xx not_active Application Discontinuation
- 1974-09-06 JP JP49102896A patent/JPS5072309A/ja active Pending
- 1974-09-06 FR FR7430364A patent/FR2243101B1/fr not_active Expired
- 1974-09-09 IT IT27063/74A patent/IT1021182B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2243101A1 (fr) | 1975-04-04 |
| NL7411317A (nl) | 1975-03-11 |
| ZA744946B (en) | 1975-08-27 |
| IT1021182B (it) | 1978-01-30 |
| CA1020263A (en) | 1977-11-01 |
| US3897921A (en) | 1975-08-05 |
| JPS5072309A (fr) | 1975-06-14 |
| GB1483642A (en) | 1977-08-24 |
| AU7283674A (en) | 1976-03-04 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |