BE486389A - - Google Patents

Info

Publication number
BE486389A
BE486389A BE486389A BE486389A BE486389A BE 486389 A BE486389 A BE 486389A BE 486389 A BE486389 A BE 486389A BE 486389 A BE486389 A BE 486389A BE 486389 A BE486389 A BE 486389A
Authority
BE
Belgium
Prior art keywords
wire
cable
wires
lamp
lighting
Prior art date
Application number
BE486389A
Other languages
English (en)
French (fr)
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 filed Critical
Publication of BE486389A publication Critical patent/BE486389A/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/005—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for remote controlled apparatus; for lines connecting such apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B19/00—Mining-hoist operation
    • B66B19/06—Applications of signalling devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/18—Special adaptations of signalling or alarm devices
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
    • G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
BE486389A 1947-12-24 1948-12-18 BE486389A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34247/47A GB632909A (en) 1947-12-24 1947-12-24 Improvements relating to switch-operated electric lighting and signalling systems

Publications (1)

Publication Number Publication Date
BE486389A true BE486389A (enrdf_load_stackoverflow) 1949-01-15

Family

ID=10363265

Family Applications (1)

Application Number Title Priority Date Filing Date
BE486389A BE486389A (enrdf_load_stackoverflow) 1947-12-24 1948-12-18

Country Status (4)

Country Link
BE (1) BE486389A (enrdf_load_stackoverflow)
DE (1) DE820719C (enrdf_load_stackoverflow)
FR (1) FR976517A (enrdf_load_stackoverflow)
GB (1) GB632909A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967211C (de) * 1951-05-20 1957-11-07 Lehner Fernsprech Signal Schlagwettergeschuetzte Leuchte, insbesondere Strebleuchte
DE950266C (de) * 1952-07-27 1956-10-04 Elektro App Kom Ges Gothe & Co Signalschlatung einer Strebbeleuchtungsanlage

Also Published As

Publication number Publication date
DE820719C (de) 1951-11-12
GB632909A (en) 1949-12-05
FR976517A (fr) 1951-03-19

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