GB1447511A - Control circuits particularly for highway crossing control systems - Google Patents

Control circuits particularly for highway crossing control systems

Info

Publication number
GB1447511A
GB1447511A GB3929373A GB3929373A GB1447511A GB 1447511 A GB1447511 A GB 1447511A GB 3929373 A GB3929373 A GB 3929373A GB 3929373 A GB3929373 A GB 3929373A GB 1447511 A GB1447511 A GB 1447511A
Authority
GB
United Kingdom
Prior art keywords
gate
circuit
output
signal
hold
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
GB3929373A
Other languages
English (en)
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 Technologies Inc
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
Publication of GB1447511A publication Critical patent/GB1447511A/en
Expired legal-status Critical Current

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)
GB3929373A 1972-08-21 1973-08-20 Control circuits particularly for highway crossing control systems Expired GB1447511A (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
GB1447511A true GB1447511A (en) 1976-08-25

Family

ID=23080524

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3929373A Expired GB1447511A (en) 1972-08-21 1973-08-20 Control circuits particularly for highway crossing control systems

Country Status (8)

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

Also Published As

Publication number Publication date
FR2196932A1 (enExample) 1974-03-22
CA992190A (en) 1976-06-29
NL7311444A (enExample) 1974-02-25
ZA735596B (en) 1975-04-30
JPS4958510A (enExample) 1974-06-06
AU5941173A (en) 1975-02-20
AR200277A1 (es) 1974-10-31
FR2196932B1 (enExample) 1976-06-18
ES418087A1 (es) 1976-03-16

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee