TREA

Air ducts

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  • CPC
  • E21F1/04
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS E21F1/00Ventilation of mines or tunnels Distribution of ventilating currents

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E21F1/04Air ducts
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Ventilation system
    • Patent number 11,933,177
    • Issue date Mar 19, 2024
    • Toyota Jidosha Kabushiki Kaisha
    • Masayuki Ito
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Track structure with hollow center rail usable as ventilation duct
    • Patent number 11,807,279
    • Issue date Nov 7, 2023
    • RIINO Inc.
    • Aaron Kevin Lambert
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hose for providing an emergency fresh air supply to an underground...
    • Patent number 11,739,640
    • Issue date Aug 29, 2023
    • NOVINIUM, LLC
    • Glen John Bertini
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method for radially mining open-pit end slope pressed coal
    • Patent number 11,377,952
    • Issue date Jul 5, 2022
    • China University of Mining and Technology
    • Nan Zhou
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Underground ventilation apparatus and method
    • Patent number 10,760,420
    • Issue date Sep 1, 2020
    • Polyvent PTY LTD
    • Joseph Ianni
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Security for grate covering underground air vents
    • Patent number 10,619,884
    • Issue date Apr 14, 2020
    • Floodbreak, L.L.C.
    • Louis A. Waters
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Duct with electrically conductive coating
    • Patent number 9,618,145
    • Issue date Apr 11, 2017
    • Hamilton Sundstrand Corporation
    • Ricardo O. Brown
    • E04 - BUILDING
  • Information Patent Grant

    Mine ventilation structure and a deck panel for such a structure
    • Patent number 9,447,685
    • Issue date Sep 20, 2016
    • Jack Kennedy Metal Products and Buildings, Inc.
    • William R. Kennedy
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Ventilation ducting arrangement
    • Patent number 9,200,815
    • Issue date Dec 1, 2015
    • ABC Industries, Inc.
    • Steven S. Fleagle
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Reinforced mine ventilation device
    • Patent number 8,220,094
    • Issue date Jul 17, 2012
    • Kennedy Metal Products & Buildings, Inc.
    • William R. Kennedy
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Telescopic ventline
    • Patent number 6,669,552
    • Issue date Dec 30, 2003
    • Ralph G. Beer
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Mine ventilation tubing system and method of installation
    • Patent number 5,217,406
    • Issue date Jun 8, 1993
    • Peabody Coal Company
    • Mick E. Toth
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Ventilation ducting
    • Patent number 5,094,273
    • Issue date Mar 10, 1992
    • Acme Group Pty Ltd.
    • Anthony C. Eagleton
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Method and apparatus for extending ventilation ductwork
    • Patent number 4,625,631
    • Issue date Dec 2, 1986
    • Mobil Oil Corporation
    • Samuel I. Vera
    • G02 - OPTICS
  • Information Patent Grant

    Apparatus for extending ventilating conduits
    • Patent number 4,361,079
    • Issue date Nov 30, 1982
    • Ruhrkohle AG
    • Hans Christensen
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Apparatus for extending ventilating conduits
    • Patent number 4,344,357
    • Issue date Aug 17, 1982
    • Ruhrkohle AG
    • Alfred Mittelkotter
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mine face ventilation system
    • Patent number 4,235,163
    • Issue date Nov 25, 1980
    • The United States of America as represented by the Secretary of the Interior
    • Edward F. Divers
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Ventilation system for automated mining machines
    • Patent number 4,200,036
    • Issue date Apr 29, 1980
    • The United States of America as represented by the Secretary of the Interior
    • Joseph E. Matta
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3715969
    • Patent number 3,715,969
    • Issue date Feb 13, 1973
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3491800
    • Patent number 3,491,800
    • Issue date Jan 27, 1970
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    3289567
    • Patent number 3,289,567
    • Issue date Dec 6, 1966
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3205913
    • Patent number 3,205,913
    • Issue date Sep 14, 1965
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2804095
    • Patent number 2,804,095
    • Issue date Aug 27, 1957
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2590196
    • Patent number 2,590,196
    • Issue date Mar 25, 1952
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2371042
    • Patent number 2,371,042
    • Issue date Mar 6, 1945
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2350158
    • Patent number 2,350,158
    • Issue date May 30, 1944
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2345636
    • Patent number 2,345,636
    • Issue date Apr 4, 1944
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2097663
    • Patent number 2,097,663
    • Issue date Nov 2, 1937
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2091265
    • Patent number 2,091,265
    • Issue date Aug 31, 1937
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2012108
    • Patent number 2,012,108
    • Issue date Aug 20, 1935
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...

Patents Applicationslast 30 patents