ZA743701B - Improvements in electrical detective circuits - Google Patents

Improvements in electrical detective circuits

Info

Publication number
ZA743701B
ZA743701B ZA00743701A ZA743701A ZA743701B ZA 743701 B ZA743701 B ZA 743701B ZA 00743701 A ZA00743701 A ZA 00743701A ZA 743701 A ZA743701 A ZA 743701A ZA 743701 B ZA743701 B ZA 743701B
Authority
ZA
South Africa
Prior art keywords
electrical
detective
circuits
detective circuits
electrical detective
Prior art date
Application number
ZA00743701A
Other languages
English (en)
Inventor
D Vermeulen
Original Assignee
Western Industries Pty
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.)
Filing date
Publication date
Application filed by Western Industries Pty filed Critical Western Industries Pty
Priority to ZA00743701A priority Critical patent/ZA743701B/xx
Priority to US05/508,167 priority patent/US3952977A/en
Priority to FR7434829A priority patent/FR2274488A1/fr
Priority to GB4655574A priority patent/GB1457193A/en
Priority to AU75359/74A priority patent/AU469571B2/en
Priority to DE19742458456 priority patent/DE2458456A1/de
Publication of ZA743701B publication Critical patent/ZA743701B/xx

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 train
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B61L1/187—Use of alternating current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
    • B61L23/007—Safety arrangements on railway crossings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
ZA00743701A 1974-06-11 1974-06-11 Improvements in electrical detective circuits ZA743701B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ZA00743701A ZA743701B (en) 1974-06-11 1974-06-11 Improvements in electrical detective circuits
US05/508,167 US3952977A (en) 1974-06-11 1974-09-23 Electrical detective circuits
FR7434829A FR2274488A1 (fr) 1974-06-11 1974-10-16 Circuit de detection pour un point d'embranchement de voies ferrees
GB4655574A GB1457193A (en) 1974-06-11 1974-10-28 Electrical railway vehicles axle detection circuits
AU75359/74A AU469571B2 (en) 1974-06-11 1974-11-14 Improvements in electrical detective circuits
DE19742458456 DE2458456A1 (de) 1974-06-11 1974-12-10 Detektorschaltung fuer eisenbahnweichen und -kreuzungen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA00743701A ZA743701B (en) 1974-06-11 1974-06-11 Improvements in electrical detective circuits

Publications (1)

Publication Number Publication Date
ZA743701B true ZA743701B (en) 1975-06-25

Family

ID=25567790

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00743701A ZA743701B (en) 1974-06-11 1974-06-11 Improvements in electrical detective circuits

Country Status (6)

Country Link
US (1) US3952977A (xx)
AU (1) AU469571B2 (xx)
DE (1) DE2458456A1 (xx)
FR (1) FR2274488A1 (xx)
GB (1) GB1457193A (xx)
ZA (1) ZA743701B (xx)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4304377A (en) * 1977-06-08 1981-12-08 Compagnie De Signaux Et D'entreprises Electriques Electrical block separating joints for railway signaling systems
FR2598374B1 (fr) * 1986-05-06 1988-08-26 Signaux Entr Electriques Circuit de voie perfectionne pour appareil de voie de chemin de fer
US5029780A (en) * 1990-05-14 1991-07-09 Safetran Systems Corporation Multi-frequency railroad grade crossing termination shunt assembly
US6102340A (en) * 1997-02-07 2000-08-15 Ge-Harris Railway Electronics, Llc Broken rail detection system and method
US8857770B2 (en) * 2004-01-02 2014-10-14 David J. Ruskauff Railway dark territory switch automation
US7416159B2 (en) * 2004-01-02 2008-08-26 Donald Coy Beaman Method and apparatus for controlling railway switches
DE102016203108A1 (de) * 2016-02-26 2017-08-31 Siemens Aktiengesellschaft Anordnung zum Überwachen des Belegzustandes einer Weiche oder eines Gleisbereichs
DE102017205854A1 (de) * 2017-04-06 2018-10-11 Siemens Aktiengesellschaft Anordnung zum Überwachen des Belegzustandes einer Weiche oder eines Gleisbereichs

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3345512A (en) * 1965-05-06 1967-10-03 Westinghouse Air Brake Co Audio frequency overlay detector track circuit for electric propulsion territory
US3524054A (en) * 1968-01-08 1970-08-11 Gen Signal Corp High frequency track circuits for rail-roads interrelated at switches and crossovers
US3819933A (en) * 1972-12-08 1974-06-25 Westinghouse Air Brake Co Detector track circuit for railroad crossings

Also Published As

Publication number Publication date
FR2274488A1 (fr) 1976-01-09
US3952977A (en) 1976-04-27
DE2458456A1 (de) 1976-01-02
AU469571B2 (en) 1976-02-19
AU7535974A (en) 1976-02-19
FR2274488B3 (xx) 1977-07-22
GB1457193A (en) 1976-12-01

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