TREA

Devices for automatically opening air doors

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Industry

  • CPC
  • E21F1/12
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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

Current Industry

E21F1/12Devices for automatically opening air doors
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Articulated mine door opening mechanism
    • Patent number 10,184,286
    • Issue date Jan 22, 2019
    • Jack Kennedy Metal Products and Buildings, Inc.
    • William R. Kennedy
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Method of opening a mine door leaf
    • Patent number 9,341,061
    • Issue date May 17, 2016
    • Jack Kennedy Metal Products and Buildings, Inc.
    • William R. Kennedy
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Articulated mine door opening mechanism
    • Patent number 8,800,204
    • Issue date Aug 12, 2014
    • Kennedy Metal Products & Buildings, Inc.
    • William R. Kennedy
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Mine door system including an air pressure relief door
    • Patent number 6,955,594
    • Issue date Oct 18, 2005
    • William R. Kennedy
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Mine door installation
    • Patent number 6,594,954
    • Issue date Jul 22, 2003
    • Jack Kennedy Metal Products and Buildings, Inc.
    • William R. Kennedy
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Mine door power drive system
    • Patent number 6,425,820
    • Issue date Jul 30, 2002
    • Jack Kennedy Metal Products and Buildings, Inc.
    • William R. Kennedy
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Balanced ventilation doors
    • Patent number 6,361,430
    • Issue date Mar 26, 2002
    • Wayne William Kitching
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1903384
    • Patent number 1,903,384
    • Issue date Apr 4, 1933
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1589357
    • Patent number 1,589,357
    • Issue date Jun 22, 1926
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    METHOD OF OPENING A MINE DOOR LEAF
    • Publication number 20140311042
    • Publication date Oct 23, 2014
    • William R. Kennedy
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    ARTICULATED MINE DOOR OPENING MECHANISM
    • Publication number 20110203182
    • Publication date Aug 25, 2011
    • KENNEDY METAL PRODUCTS & BUILDINGS, INC.
    • William R. Kennedy
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    Mine door system including an air pressure relief door
    • Publication number 20040266329
    • Publication date Dec 30, 2004
    • William R. Kennedy
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    MINE DOOR INSTALLATION
    • Publication number 20030126798
    • Publication date Jul 10, 2003
    • Jack Kennedy Metal Products & Buildings, Inc.
    • William R. Kennedy
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    Balanced ventilation doors
    • Publication number 20010007814
    • Publication date Jul 12, 2001
    • Wayne William Kitching
    • E21 - EARTH DRILLING MINING