FR951348A - Improvements to electrical control devices - Google Patents

Improvements to electrical control devices

Info

Publication number
FR951348A
FR951348A FR951348DA FR951348A FR 951348 A FR951348 A FR 951348A FR 951348D A FR951348D A FR 951348DA FR 951348 A FR951348 A FR 951348A
Authority
FR
France
Prior art keywords
control devices
electrical control
electrical
devices
control
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
Other languages
French (fr)
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.)
Hitachi Rail STS USA Inc
Original Assignee
Union Switch and Signal Inc
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 Union Switch and Signal Inc filed Critical Union Switch and Signal Inc
Application granted granted Critical
Publication of FR951348A publication Critical patent/FR951348A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/16—Continuous control along the route
    • B61L3/22—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation
    • B61L3/221—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation using track circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR951348D 1941-06-27 1947-08-06 Improvements to electrical control devices Expired FR951348A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US951348XA 1941-06-27 1941-06-27

Publications (1)

Publication Number Publication Date
FR951348A true FR951348A (en) 1949-10-21

Family

ID=22250002

Family Applications (1)

Application Number Title Priority Date Filing Date
FR951348D Expired FR951348A (en) 1941-06-27 1947-08-06 Improvements to electrical control devices

Country Status (1)

Country Link
FR (1) FR951348A (en)

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