ZA744946B - Interlocking track circuits - Google Patents

Interlocking track circuits

Info

Publication number
ZA744946B
ZA744946B ZA00744946A ZA744946A ZA744946B ZA 744946 B ZA744946 B ZA 744946B ZA 00744946 A ZA00744946 A ZA 00744946A ZA 744946 A ZA744946 A ZA 744946A ZA 744946 B ZA744946 B ZA 744946B
Authority
ZA
South Africa
Prior art keywords
track circuits
interlocking track
interlocking
circuits
track
Prior art date
Application number
ZA00744946A
Other languages
English (en)
Inventor
K Frielinghaus
J West
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.)
Filing date
Publication date
Application filed by Gen Signal Corp filed Critical Gen Signal Corp
Publication of ZA744946B publication Critical patent/ZA744946B/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 vehicle train, e.g. pedals
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B61L1/187—Use of alternating current
ZA00744946A 1973-09-07 1974-08-02 Interlocking track circuits ZA744946B (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
ZA744946B true ZA744946B (en) 1975-08-27

Family

ID=23561733

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00744946A ZA744946B (en) 1973-09-07 1974-08-02 Interlocking track circuits

Country Status (8)

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

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 (xx) 1979-01-05
NL7411317A (nl) 1975-03-11
CA1020263A (en) 1977-11-01
IT1021182B (it) 1978-01-30
US3897921A (en) 1975-08-05
AU7283674A (en) 1976-03-04
GB1483642A (en) 1977-08-24
FR2243101A1 (xx) 1975-04-04
JPS5072309A (xx) 1975-06-14

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