FR441556A - Railroad protection system - Google Patents

Railroad protection system

Info

Publication number
FR441556A
FR441556A FR441556DA FR441556A FR 441556 A FR441556 A FR 441556A FR 441556D A FR441556D A FR 441556DA FR 441556 A FR441556 A FR 441556A
Authority
FR
France
Prior art keywords
protection system
railroad
railroad protection
protection
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)
Inventor
Louis Calmel
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.)
LOUIS CALMEL
Original Assignee
LOUIS CALMEL
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 LOUIS CALMEL filed Critical LOUIS CALMEL
Application granted granted Critical
Publication of FR441556A publication Critical patent/FR441556A/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
    • B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
    • 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
    • B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
    • B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR441556D 1911-05-09 1912-03-08 Railroad protection system Expired FR441556A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR430509T 1911-05-09

Publications (1)

Publication Number Publication Date
FR441556A true FR441556A (en) 1912-08-10

Family

ID=1472741

Family Applications (2)

Application Number Title Priority Date Filing Date
FR430509D Expired FR430509A (en) 1911-05-09 1911-05-09 Railroad protection system
FR441556D Expired FR441556A (en) 1911-05-09 1912-03-08 Railroad protection system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR430509D Expired FR430509A (en) 1911-05-09 1911-05-09 Railroad protection system

Country Status (1)

Country Link
FR (2) FR430509A (en)

Also Published As

Publication number Publication date
FR430509A (en) 1911-10-18

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