CA1020263A - Interlocking track circuits - Google Patents

Interlocking track circuits

Info

Publication number
CA1020263A
CA1020263A CA205,334A CA205334A CA1020263A CA 1020263 A CA1020263 A CA 1020263A CA 205334 A CA205334 A CA 205334A CA 1020263 A CA1020263 A CA 1020263A
Authority
CA
Canada
Prior art keywords
track circuits
interlocking track
interlocking
circuits
track
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
CA205,334A
Other languages
English (en)
Other versions
CA205334S (en
Inventor
Jon F. West
Klaus H. Frielinghaus
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.)
SPX Corp
Original Assignee
General 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.)
Filing date
Publication date
Application filed by General Signal Corp filed Critical General Signal Corp
Application granted granted Critical
Publication of CA1020263A publication Critical patent/CA1020263A/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)
CA205,334A 1973-09-07 1974-07-22 Interlocking track circuits Expired CA1020263A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US395110A US3897921A (en) 1973-09-07 1973-09-07 Interlocking track circuits

Publications (1)

Publication Number Publication Date
CA1020263A true CA1020263A (en) 1977-11-01

Family

ID=23561733

Family Applications (1)

Application Number Title Priority Date Filing Date
CA205,334A Expired CA1020263A (en) 1973-09-07 1974-07-22 Interlocking track circuits

Country Status (8)

Country Link
US (1) US3897921A (fr)
JP (1) JPS5072309A (fr)
CA (1) CA1020263A (fr)
FR (1) FR2243101B1 (fr)
GB (1) GB1483642A (fr)
IT (1) IT1021182B (fr)
NL (1) NL7411317A (fr)
ZA (1) ZA744946B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728063A (en) * 1986-08-07 1988-03-01 General Signal Corp. Railway signalling system especially for broken rail detection
US4878638A (en) * 1987-01-12 1989-11-07 General Signal Corporation Combination frequency loop coupling for railway track signalling
US9150228B2 (en) * 2012-07-13 2015-10-06 Grappone Technologies Inc. Track circuit providing enhanced broken rail detection

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3328581A (en) * 1966-06-16 1967-06-27 Westinghouse Air Brake Co Rapid transit speed control system
US3450874A (en) * 1967-03-31 1969-06-17 Gen Electric Railway track circuit
US3526378A (en) * 1967-08-23 1970-09-01 Westinghouse Electric Corp Signaling system for determining the presence of a train vehicle
US3524054A (en) * 1968-01-08 1970-08-11 Gen Signal Corp High frequency track circuits for rail-roads interrelated at switches and crossovers
US3666217A (en) * 1970-05-04 1972-05-30 Gen Signal Corp Track communication system for continuous rail

Also Published As

Publication number Publication date
FR2243101B1 (fr) 1979-01-05
FR2243101A1 (fr) 1975-04-04
GB1483642A (en) 1977-08-24
ZA744946B (en) 1975-08-27
AU7283674A (en) 1976-03-04
IT1021182B (it) 1978-01-30
US3897921A (en) 1975-08-05
JPS5072309A (fr) 1975-06-14
NL7411317A (nl) 1975-03-11

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