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Devices preventing sparking of machines or apparatus

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Industry

  • CPC
  • E21F9/00
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS

Current Industry

E21F9/00Devices preventing sparking of machines or apparatus
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Patents Grantslast 30 patents

  • Information Patent Grant

    Conveying system having a spark-detecting device
    • Patent number 8,701,873
    • Issue date Apr 22, 2014
    • Phoenix Conveyor Belt Systems GmbH
    • Bernd Kuesel
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Pre-start warning system and machine incorporating such system
    • Patent number 4,649,288
    • Issue date Mar 10, 1987
    • Dresser U.K. Limited
    • Michael J. Barry
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Surveillance signal apparatus
    • Patent number 4,600,977
    • Issue date Jul 15, 1986
    • Barlian; Reinhold
    • Reinhold Barlian
    • G08 - SIGNALLING
  • Information Patent Grant

    Electrical combustion toilet
    • Patent number 4,425,671
    • Issue date Jan 17, 1984
    • Ewald Nelken
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Nail driving impact hammer
    • Patent number 4,316,513
    • Issue date Feb 23, 1982
    • Dwight Harris
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Supply systems for mobile appliances, particularly mining machines
    • Patent number 4,245,726
    • Issue date Jan 20, 1981
    • Gewerkschaft Eisenhutte Westfalia
    • Dieter Kohler
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Mine car
    • Patent number 4,174,013
    • Issue date Nov 13, 1979
    • Lester Construction Co.
    • Jeffry R. Yago
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Permissible mine car adapter assembly
    • Patent number 4,094,361
    • Issue date Jun 13, 1978
    • Lester Construction Company
    • Jeffry R. Yago
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3821609
    • Patent number 3,821,609
    • Issue date Jun 28, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3138741
    • Patent number 3,138,741
    • Issue date Jun 23, 1964
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2568518
    • Patent number 2,568,518
    • Issue date Sep 18, 1951
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2514823
    • Patent number 2,514,823
    • Issue date Jul 11, 1950
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2452248
    • Patent number 2,452,248
    • Issue date Oct 26, 1948
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1992109
    • Patent number 1,992,109
    • Issue date Feb 19, 1935
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    1720364
    • Patent number 1,720,364
    • Issue date Jul 9, 1929
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1428634
    • Patent number 1,428,634
    • Issue date Sep 12, 1922
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents