IT996703B - CODED TRACK CIRCUIT FOR ALTERNATING CURRENT WITHOUT INSULATING JOINT ESPECIALLY FOR RIO RAILWAY SIGNALING SYSTEMS - Google Patents

CODED TRACK CIRCUIT FOR ALTERNATING CURRENT WITHOUT INSULATING JOINT ESPECIALLY FOR RIO RAILWAY SIGNALING SYSTEMS

Info

Publication number
IT996703B
IT996703B IT69746/73A IT6974673A IT996703B IT 996703 B IT996703 B IT 996703B IT 69746/73 A IT69746/73 A IT 69746/73A IT 6974673 A IT6974673 A IT 6974673A IT 996703 B IT996703 B IT 996703B
Authority
IT
Italy
Prior art keywords
rio
alternating current
track circuit
signaling systems
insulating joint
Prior art date
Application number
IT69746/73A
Other languages
Italian (it)
Inventor
E Staples Crawford
Original Assignee
Westinghouse Air Brake Co
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 Westinghouse Air Brake Co filed Critical Westinghouse Air Brake Co
Application granted granted Critical
Publication of IT996703B publication Critical patent/IT996703B/en

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
IT69746/73A 1972-09-18 1973-09-17 CODED TRACK CIRCUIT FOR ALTERNATING CURRENT WITHOUT INSULATING JOINT ESPECIALLY FOR RIO RAILWAY SIGNALING SYSTEMS IT996703B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28997172A 1972-09-18 1972-09-18

Publications (1)

Publication Number Publication Date
IT996703B true IT996703B (en) 1975-12-10

Family

ID=23113979

Family Applications (1)

Application Number Title Priority Date Filing Date
IT69746/73A IT996703B (en) 1972-09-18 1973-09-17 CODED TRACK CIRCUIT FOR ALTERNATING CURRENT WITHOUT INSULATING JOINT ESPECIALLY FOR RIO RAILWAY SIGNALING SYSTEMS

Country Status (5)

Country Link
US (1) US3781540A (en)
AU (1) AU472381B2 (en)
CA (1) CA954969A (en)
GB (1) GB1437194A (en)
IT (1) IT996703B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986691A (en) * 1975-05-30 1976-10-19 Westinghouse Air Brake Company Phase selective track circuit apparatus
US5219426A (en) * 1992-02-25 1993-06-15 Union Switch & Signal Inc. Single-element coded alternating current railway track circuit having double-element, phase-selective capability

Also Published As

Publication number Publication date
AU5980373A (en) 1975-03-06
GB1437194A (en) 1976-05-26
AU472381B2 (en) 1976-05-20
US3781540A (en) 1973-12-25
CA954969A (en) 1974-09-17

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