CA939775A - Control of multiple highway crossings - Google Patents

Control of multiple highway crossings

Info

Publication number
CA939775A
CA939775A CA136,227A CA136227A CA939775A CA 939775 A CA939775 A CA 939775A CA 136227 A CA136227 A CA 136227A CA 939775 A CA939775 A CA 939775A
Authority
CA
Canada
Prior art keywords
control
highway crossings
multiple highway
crossings
highway
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
CA136,227A
Other languages
English (en)
Other versions
CA136227S (en
Inventor
Willis R. Smith
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
Application granted granted Critical
Publication of CA939775A publication Critical patent/CA939775A/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)
CA136,227A 1971-06-14 1972-03-03 Control of multiple highway crossings Expired CA939775A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15284871A 1971-06-14 1971-06-14

Publications (1)

Publication Number Publication Date
CA939775A true CA939775A (en) 1974-01-08

Family

ID=22544706

Family Applications (1)

Application Number Title Priority Date Filing Date
CA136,227A Expired CA939775A (en) 1971-06-14 1972-03-03 Control of multiple highway crossings

Country Status (9)

Country Link
US (1) US3734434A (OSRAM)
AR (1) AR196406A1 (OSRAM)
BR (1) BR7203834D0 (OSRAM)
CA (1) CA939775A (OSRAM)
ES (1) ES403849A1 (OSRAM)
FR (1) FR2142411A5 (OSRAM)
GB (1) GB1336690A (OSRAM)
IT (1) IT958341B (OSRAM)
NL (1) NL7207966A (OSRAM)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307860A (en) * 1979-07-30 1981-12-29 American Standard Inc. Railroad grade crossing constant warning protection system
US9925995B1 (en) * 2015-02-03 2018-03-27 Bnsf Railway Company Highway crossing out-of-service controller

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3390256A (en) * 1963-09-18 1968-06-25 Marquardt Corp Predictor self-check system for analog computer
US3422262A (en) * 1966-02-01 1969-01-14 Gen Signal Corp Highway crossing signal control system

Also Published As

Publication number Publication date
US3734434A (en) 1973-05-22
NL7207966A (OSRAM) 1972-12-18
IT958341B (it) 1973-10-20
ES403849A1 (es) 1975-11-16
FR2142411A5 (OSRAM) 1973-01-26
BR7203834D0 (pt) 1973-05-24
AR196406A1 (es) 1973-12-27
GB1336690A (en) 1973-11-07

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