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  • CPC
  • E21C25/34
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C25/00Cutting machines

Current Industry

E21C25/34Chains
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Chain conveyor and link for same
    • Patent number 11,530,095
    • Issue date Dec 20, 2022
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Chain conveyor
    • Patent number 11,440,736
    • Issue date Sep 13, 2022
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Chain conveyor and link for same
    • Patent number 11,332,316
    • Issue date May 17, 2022
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Chain conveyor
    • Patent number 10,981,728
    • Issue date Apr 20, 2021
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Chain conveyor and coupler link for same
    • Patent number 10,974,905
    • Issue date Apr 13, 2021
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Drilling and cutting device
    • Patent number 10,900,354
    • Issue date Jan 26, 2021
    • Huthaifa Eilouti
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Chain conveyor and link for same
    • Patent number 10,717,603
    • Issue date Jul 21, 2020
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Drive shaft and sprockets for chain conveyor
    • Patent number 10,604,347
    • Issue date Mar 31, 2020
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Chain conveyor and coupler link for same
    • Patent number 10,442,627
    • Issue date Oct 15, 2019
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Chain conveyor
    • Patent number 10,414,594
    • Issue date Sep 17, 2019
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Chain conveyor link
    • Patent number 10,392,193
    • Issue date Aug 27, 2019
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Chain for trencher apparatus
    • Patent number 6,014,826
    • Issue date Jan 18, 2000
    • Craig B. Walgren
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Chain for trencher apparatus
    • Patent number 5,248,188
    • Issue date Sep 28, 1993
    • Craig B. Walgren
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Cutting chain for mining machines
    • Patent number 5,031,964
    • Issue date Jul 16, 1991
    • Dresser Industries, Inc.
    • Paul W. Meisel
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Cutting arm
    • Patent number 4,856,719
    • Issue date Aug 15, 1989
    • Diamant Boart
    • Charles P. Hallez
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Endless chains comprised of interdigitated link elements having an...
    • Patent number 4,674,803
    • Issue date Jun 23, 1987
    • The Cincinnati Mine Machinery Company
    • Lester J. Sterwerf
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Apparatus for cutting hard earth formations
    • Patent number 4,244,625
    • Issue date Jan 13, 1981
    • Boring & Tunneling Company of America, Inc.
    • Gilbert M. Turner
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mineral cutter chains
    • Patent number 4,068,896
    • Issue date Jan 17, 1978
    • Austin Hoy and Company Limited
    • Sidney Ernest Proctor
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Continuous mining machine with a chain drive for the cutting head
    • Patent number 3,968,995
    • Issue date Jul 13, 1976
    • Dresser Industries, Inc.
    • Einar M. Arentzen
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3856358
    • Patent number 3,856,358
    • Issue date Dec 24, 1974
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    3807803
    • Patent number 3,807,803
    • Issue date Apr 30, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3788711
    • Patent number 3,788,711
    • Issue date Jan 29, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3787091
    • Patent number 3,787,091
    • Issue date Jan 22, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3784259
    • Patent number 3,784,259
    • Issue date Jan 8, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3752534
    • Patent number 3,752,534
    • Issue date Aug 14, 1973
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3679265
    • Patent number 3,679,265
    • Issue date Jul 25, 1972
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3307875
    • Patent number 3,307,875
    • Issue date Mar 7, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2890873
    • Patent number 2,890,873
    • Issue date Jun 16, 1959
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2810567
    • Patent number 2,810,567
    • Issue date Oct 22, 1957
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2569584
    • Patent number 2,569,584
    • Issue date Oct 2, 1951
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    CHAIN CONVEYOR
    • Publication number 20210237979
    • Publication date Aug 5, 2021
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    CHAIN CONVEYOR AND LINK FOR SAME
    • Publication number 20200354150
    • Publication date Nov 12, 2020
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    CHAIN CONVEYOR AND COUPLER LINK FOR SAME
    • Publication number 20200115164
    • Publication date Apr 16, 2020
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    CHAIN CONVEYOR
    • Publication number 20200010277
    • Publication date Jan 9, 2020
    • Joy Global Underground Mining LLC
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    CHAIN CONVEYOR AND COUPLER LINK FOR SAME
    • Publication number 20180251310
    • Publication date Sep 6, 2018
    • Joy MM Delaware, Inc.
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    CHAIN CONVEYOR AND LINK FOR SAME
    • Publication number 20180251311
    • Publication date Sep 6, 2018
    • Joy MM Delaware, Inc.
    • Aaron Philip Walker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    DRILLING AND CUTTING DEVICE
    • Publication number 20180058215
    • Publication date Mar 1, 2018
    • Huthaifa Eilouti
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    CUTTING CHAIN
    • Publication number 20140312679
    • Publication date Oct 23, 2014
    • ESCO Hydra (UK) Limited
    • William Stephen Clapham
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING