NL7603180A - Tweevoudig spoorwegstelsel. - Google Patents
Tweevoudig spoorwegstelsel.Info
- Publication number
- NL7603180A NL7603180A NL7603180A NL7603180A NL7603180A NL 7603180 A NL7603180 A NL 7603180A NL 7603180 A NL7603180 A NL 7603180A NL 7603180 A NL7603180 A NL 7603180A NL 7603180 A NL7603180 A NL 7603180A
- Authority
- NL
- Netherlands
- Prior art keywords
- dual
- railway system
- railway
- dual railway
- Prior art date
Links
- 230000009977 dual effect Effects 0.000 title 1
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
- B61L3/16—Continuous control along the route
- B61L3/22—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation
- B61L3/225—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation using separate conductors along the route
-
- 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 train
- B61L1/18—Railway track circuits
- B61L1/181—Details
- B61L1/187—Use of alternating current
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/562,725 US3970271A (en) | 1975-03-27 | 1975-03-27 | Dual frequency track circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7603180A true NL7603180A (nl) | 1976-09-29 |
Family
ID=24247512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7603180A NL7603180A (nl) | 1975-03-27 | 1976-03-26 | Tweevoudig spoorwegstelsel. |
Country Status (7)
Country | Link |
---|---|
US (1) | US3970271A (nl) |
AU (1) | AU502047B2 (nl) |
CA (1) | CA1045238A (nl) |
GB (1) | GB1538156A (nl) |
IT (1) | IT1067745B (nl) |
NL (1) | NL7603180A (nl) |
ZA (1) | ZA761860B (nl) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2449575A1 (fr) * | 1978-12-22 | 1980-09-19 | Signaux Entr Electriques | Procede de codage de securite pour circuits de voie |
US4258312A (en) * | 1979-04-20 | 1981-03-24 | American Standard Inc. | Vital voltage regulator and phase shift circuit arrangement |
US4298179A (en) * | 1979-05-31 | 1981-11-03 | American Standard Inc. | Vital cross field transformer circuit arrangement for railroad signaling systems |
IT1151495B (it) * | 1980-04-18 | 1986-12-17 | Ansaldo Sa | Rilevatore di squilibrio della corrente armonica di trazione nei circuiti di binario |
US4723739A (en) * | 1985-07-16 | 1988-02-09 | American Standard Inc. | Synchronous rectification track circuit |
IT1225716B (it) * | 1988-10-26 | 1990-11-22 | Esacontrol Spa | Dispositivo per la protezione dei rele' di binario dai disturbi elettrici |
JP5364603B2 (ja) * | 2010-01-18 | 2013-12-11 | 株式会社日立製作所 | 列車検知装置 |
EP4045378A4 (en) | 2019-10-14 | 2024-04-24 | Athena Industrial Technologies INC. | BROKEN RAIL DETECTOR |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2076930A (en) * | 1935-04-13 | 1937-04-13 | Union Switch & Signal Co | Railway signaling system |
US3046454A (en) * | 1957-11-14 | 1962-07-24 | Westinghouse Air Brake Co | Code detecting apparatus |
-
1975
- 1975-03-27 US US05/562,725 patent/US3970271A/en not_active Expired - Lifetime
-
1976
- 1976-03-24 CA CA248,668A patent/CA1045238A/en not_active Expired
- 1976-03-25 GB GB12094/76A patent/GB1538156A/en not_active Expired
- 1976-03-26 ZA ZA761860A patent/ZA761860B/xx unknown
- 1976-03-26 NL NL7603180A patent/NL7603180A/nl not_active Application Discontinuation
- 1976-03-26 IT IT12550/76A patent/IT1067745B/it active
- 1976-03-29 AU AU12430/76A patent/AU502047B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3970271A (en) | 1976-07-20 |
IT1067745B (it) | 1985-03-16 |
GB1538156A (en) | 1979-01-10 |
ZA761860B (en) | 1977-03-30 |
AU1243076A (en) | 1977-10-06 |
AU502047B2 (en) | 1979-07-12 |
CA1045238A (en) | 1978-12-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BV | The patent application has lapsed |