ZA735596B - Fail safe logic circuitry for vehicle transportation control - Google Patents

Fail safe logic circuitry for vehicle transportation control

Info

Publication number
ZA735596B
ZA735596B ZA00735596A ZA735596A ZA735596B ZA 735596 B ZA735596 B ZA 735596B ZA 00735596 A ZA00735596 A ZA 00735596A ZA 735596 A ZA735596 A ZA 735596A ZA 735596 B ZA735596 B ZA 735596B
Authority
ZA
South Africa
Prior art keywords
logic circuitry
fail safe
vehicle transportation
transportation control
safe logic
Prior art date
Application number
ZA00735596A
Inventor
H Sibley
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 ZA735596B publication Critical patent/ZA735596B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L29/00—Safety means for rail/road crossing traffic
    • B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
    • B61L29/28—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated
    • B61L29/288—Wiring diagram of the signal control circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
ZA00735596A 1972-08-21 1973-08-15 Fail safe logic circuitry for vehicle transportation control ZA735596B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28221172A 1972-08-21 1972-08-21

Publications (1)

Publication Number Publication Date
ZA735596B true ZA735596B (en) 1975-04-30

Family

ID=23080524

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00735596A ZA735596B (en) 1972-08-21 1973-08-15 Fail safe logic circuitry for vehicle transportation control

Country Status (8)

Country Link
JP (1) JPS4958510A (en)
AR (1) AR200277A1 (en)
CA (1) CA992190A (en)
ES (1) ES418087A1 (en)
FR (1) FR2196932B1 (en)
GB (1) GB1447511A (en)
NL (1) NL7311444A (en)
ZA (1) ZA735596B (en)

Also Published As

Publication number Publication date
ES418087A1 (en) 1976-03-16
NL7311444A (en) 1974-02-25
FR2196932B1 (en) 1976-06-18
FR2196932A1 (en) 1974-03-22
AU5941173A (en) 1975-02-20
CA992190A (en) 1976-06-29
AR200277A1 (en) 1974-10-31
GB1447511A (en) 1976-08-25
JPS4958510A (en) 1974-06-06

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