BE562975A - - Google Patents

Info

Publication number
BE562975A
BE562975A BE562975DA BE562975A BE 562975 A BE562975 A BE 562975A BE 562975D A BE562975D A BE 562975DA BE 562975 A BE562975 A BE 562975A
Authority
BE
Belgium
Application number
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.)
Publication of BE562975A publication Critical patent/BE562975A/xx

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/02Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/022Emergency operating parts, e.g. for stop-switch in dangerous conditions
    • H01H3/0226Emergency operating parts, e.g. for stop-switch in dangerous conditions operated by a pull cord
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F9/00Devices preventing sparking of machines or apparatus
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02Bases, casings, or covers
    • H01H9/04Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H9/042Explosion-proof cases

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Switch Cases, Indication, And Locking (AREA)
BE562975D 1957-03-28 BE562975A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1129590X 1957-03-28

Publications (1)

Publication Number Publication Date
BE562975A true BE562975A (fr)

Family

ID=9636963

Family Applications (1)

Application Number Title Priority Date Filing Date
BE562975D BE562975A (fr) 1957-03-28

Country Status (3)

Country Link
BE (1) BE562975A (fr)
DE (1) DE1129590B (fr)
FR (1) FR1170373A (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE867370C (de) * 1951-06-26 1953-02-16 Concordia Elek Zitaets Ag Signaleinrichtung, insbesondere fuer den Bergbau
DE952963C (de) * 1953-03-13 1956-11-22 Concordia Elek Zitaets Ag Signaleinrichtung fuer den Bergbau

Also Published As

Publication number Publication date
FR1170373A (fr) 1959-01-14
DE1129590B (de) 1962-05-17

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