ZA708196B - Apparatus and method of deriving a uniform time warning - Google Patents

Apparatus and method of deriving a uniform time warning

Info

Publication number
ZA708196B
ZA708196B ZA708196A ZA708196A ZA708196B ZA 708196 B ZA708196 B ZA 708196B ZA 708196 A ZA708196 A ZA 708196A ZA 708196 A ZA708196 A ZA 708196A ZA 708196 B ZA708196 B ZA 708196B
Authority
ZA
South Africa
Prior art keywords
deriving
uniform time
time warning
warning
uniform
Prior art date
Application number
ZA708196A
Inventor
K Frielinghaus
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 ZA708196B publication Critical patent/ZA708196B/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
    • B61L29/286—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)
  • Radar Systems Or Details Thereof (AREA)
ZA708196A 1969-12-04 1970-12-04 Apparatus and method of deriving a uniform time warning ZA708196B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88218369A 1969-12-04 1969-12-04

Publications (1)

Publication Number Publication Date
ZA708196B true ZA708196B (en) 1971-09-29

Family

ID=25380066

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA708196A ZA708196B (en) 1969-12-04 1970-12-04 Apparatus and method of deriving a uniform time warning

Country Status (4)

Country Link
US (1) US3610920A (en)
CA (1) CA934468A (en)
GB (1) GB1301920A (en)
ZA (1) ZA708196B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777139A (en) * 1970-12-03 1973-12-04 R Peel Motion sensor system
US3929307A (en) * 1973-04-09 1975-12-30 Erico Rail Prod Co Railway signal system with speed determined movement detector
DE2623967C3 (en) * 1976-05-28 1979-09-20 Standard Elektrik Lorenz Ag, 7000 Stuttgart Phase-synchronously controlled track circuit receiver
US4172576A (en) * 1977-06-21 1979-10-30 General Signal Corporation Highway crossing system with motion detecting apparatus
US4365196A (en) * 1977-12-14 1982-12-21 Finch Colin M Proximity sensing transducer with simulation means
US4306694A (en) * 1980-06-24 1981-12-22 American Standard Inc. Dual signal frequency motion monitor and broken rail detector
US4324376A (en) * 1980-06-24 1982-04-13 American Standard Inc. Railroad highway crossing warning system
FR2490569A1 (en) * 1980-09-22 1982-03-26 Signaux Entr Electriques PERFECTION RAILWAY TRACK CIRCUIT
US5098044A (en) * 1989-12-22 1992-03-24 General Railway Signal Corporation Highway crossing control system for railroads utilizing a communications link between the train locomotive and the crossing protection equipment
US5092544A (en) * 1989-12-22 1992-03-03 General Railway Signal Corp. Highway crossing control system for railroads utilizing a communications link between the train locomotive and the crossing protection equipment
US5417388A (en) * 1993-07-15 1995-05-23 Stillwell; William R. Train detection circuit
US6876309B1 (en) 1994-11-21 2005-04-05 Espeed, Inc. Bond trading system
US8588729B2 (en) * 1994-11-21 2013-11-19 Bgc Partners, Inc. Method for retrieving data stored in a database
US6572056B2 (en) 2001-01-23 2003-06-03 Alstom Signaling, Inc. Method and apparatus for uniform time warning of railroad trains
WO2011009134A2 (en) 2009-07-17 2011-01-20 Invensys Rail Corporation Track circuit communications
US8500071B2 (en) 2009-10-27 2013-08-06 Invensys Rail Corporation Method and apparatus for bi-directional downstream adjacent crossing signaling
US8660215B2 (en) * 2010-03-16 2014-02-25 Siemens Rail Automation Corporation Decoding algorithm for frequency shift key communications
US8297558B2 (en) * 2010-03-17 2012-10-30 Safetran Systems Corporation Crossing predictor with authorized track speed input
US9150227B1 (en) * 2014-04-07 2015-10-06 Electro-Motive Diesel, Inc. Receive attenuation system for a locomotive consist

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
GB1000793A (en) * 1961-07-14 1965-08-11 Westinghouse Brake & Signal Improvements relating to railway track circuits
US3246143A (en) * 1963-09-30 1966-04-12 Southern Pacific Company Railroad grade crossing protection system
US3450874A (en) * 1967-03-31 1969-06-17 Gen Electric Railway track circuit

Also Published As

Publication number Publication date
CA934468A (en) 1973-09-25
GB1301920A (en) 1973-01-04
US3610920A (en) 1971-10-05

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