IT1004913B - Apparecchiatura transistorizzata di protezione in sicurezza per pas saggi a livello ferroviari - Google Patents

Apparecchiatura transistorizzata di protezione in sicurezza per pas saggi a livello ferroviari

Info

Publication number
IT1004913B
IT1004913B IT67372/74A IT6737274A IT1004913B IT 1004913 B IT1004913 B IT 1004913B IT 67372/74 A IT67372/74 A IT 67372/74A IT 6737274 A IT6737274 A IT 6737274A IT 1004913 B IT1004913 B IT 1004913B
Authority
IT
Italy
Prior art keywords
transistorized
pas
assays
safety protection
protection equipment
Prior art date
Application number
IT67372/74A
Other languages
English (en)
Inventor
J Kramer
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 IT1004913B publication Critical patent/IT1004913B/it

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
    • B61L29/286—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 using conductor circuits controlled by the vehicle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
IT67372/74A 1973-03-02 1974-02-11 Apparecchiatura transistorizzata di protezione in sicurezza per pas saggi a livello ferroviari IT1004913B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00337596A US3819934A (en) 1973-03-02 1973-03-02 Fail-safe solid state highway crossing protection apparatus

Publications (1)

Publication Number Publication Date
IT1004913B true IT1004913B (it) 1976-07-20

Family

ID=23321184

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67372/74A IT1004913B (it) 1973-03-02 1974-02-11 Apparecchiatura transistorizzata di protezione in sicurezza per pas saggi a livello ferroviari

Country Status (4)

Country Link
US (1) US3819934A (it)
AU (1) AU6013973A (it)
CA (1) CA965864A (it)
IT (1) IT1004913B (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995173A (en) * 1974-05-30 1976-11-30 General Signal Corporation Solid state fail-safe logic system
US7250141B2 (en) * 2004-02-27 2007-07-31 Honeywell International, Inc. Augmented catalytic heat exchanger system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035167A (en) * 1958-12-03 1962-05-15 Westinghouse Air Brake Co Railway track circuit
US3046393A (en) * 1958-12-12 1962-07-24 Westinghouse Air Brake Co Apparatus for the control of highway crossing signals
US3004150A (en) * 1959-08-04 1961-10-10 Westinghouse Air Brake Co Highway crossing protection systems
GB1368604A (en) * 1970-10-29 1974-10-02 Westinghouse Brake & Signal Static relaying circuit

Also Published As

Publication number Publication date
CA965864A (en) 1975-04-08
AU6013973A (en) 1975-03-13
US3819934A (en) 1974-06-25

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