NL7603180A - Tweevoudig spoorwegstelsel. - Google Patents

Tweevoudig spoorwegstelsel.

Info

Publication number: NL7603180A
Authority: NL; Netherlands
Prior art keywords: dual; railway system; railway; dual railway
Prior art date: 1975-03-27

Application number

NL7603180A

Other languages

English (en)

Dutch (nl)

Original Assignee

Gen Signal Corp

Priority date (The priority date 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 date listed.)

1975-03-27

Filing date

1976-03-26

Publication date

1976-09-29

1976-03-26 Application filed by Gen Signal Corp filed Critical Gen Signal Corp

1976-09-29 Publication of NL7603180A publication Critical patent/NL7603180A/xx

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
- B61L3/16—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)
Physics & Mathematics (AREA)
Electromagnetism (AREA)
Automation & Control Theory (AREA)
Train Traffic Observation, Control, And Security (AREA)

NL7603180A 1975-03-27 1976-03-26 Tweevoudig spoorwegstelsel. NL7603180A (nl)

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 (it)
AU (1)	AU502047B2 (it)
CA (1)	CA1045238A (it)
GB (1)	GB1538156A (it)
IT (1)	IT1067745B (it)
NL (1)	NL7603180A (it)
ZA (1)	ZA761860B (it)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
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
US12459551B2 (en)	2019-10-14	2025-11-04	Athena Industrial Technologies Inc.	Broken rail detector
EP4045378A4 (en)	2019-10-14	2024-04-24	Athena Industrial Technologies INC.	BROKEN RAIL DETECTOR

Family Cites Families (2)

* Cited by examiner, † Cited by third party
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 NL NL7603180A patent/NL7603180A/xx not_active Application Discontinuation
- 1976-03-26 ZA ZA761860A patent/ZA761860B/xx unknown
- 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
AU1243076A (en)	1977-10-06
GB1538156A (en)	1979-01-10
AU502047B2 (en)	1979-07-12
US3970271A (en)	1976-07-20
IT1067745B (it)	1985-03-16
ZA761860B (en)	1977-03-30
CA1045238A (en)	1978-12-26

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Legal Events

Date	Code	Title	Description
1981-11-02	BV	The patent application has lapsed