CA931261A - Long length track circuits - Google Patents

Long length track circuits

Info

Publication number
CA931261A
CA931261A CA099939A CA99939A CA931261A CA 931261 A CA931261 A CA 931261A CA 099939 A CA099939 A CA 099939A CA 99939 A CA99939 A CA 99939A CA 931261 A CA931261 A CA 931261A
Authority
CA
Canada
Prior art keywords
long length
track circuits
length track
circuits
long
Prior art date
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
Application number
CA099939A
Other versions
CA99939S (en
Inventor
D. Campbell Richard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westinghouse Air Brake Co
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 CA931261A publication Critical patent/CA931261A/en
Expired legal-status Critical Current

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)
CA099939A 1969-12-15 1970-12-07 Long length track circuits Expired CA931261A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88508569A 1969-12-15 1969-12-15

Publications (1)

Publication Number Publication Date
CA931261A true CA931261A (en) 1973-07-31

Family

ID=25386102

Family Applications (1)

Application Number Title Priority Date Filing Date
CA099939A Expired CA931261A (en) 1969-12-15 1970-12-07 Long length track circuits

Country Status (2)

Country Link
US (1) US3636344A (en)
CA (1) CA931261A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006024691A1 (en) * 2006-05-19 2007-11-22 Siemens Ag Device for detecting the occupancy or leisure state of a track section

Also Published As

Publication number Publication date
US3636344A (en) 1972-01-18

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