Patents Assigned to J.S. Redpath Limited
  • Patent number: 8362721
    Abstract: A battery powered raise climber system is provided that uses Lithium ion batteries to drive a single or double electric drive for an existing raise climber. The batteries offer a faster, safer, quieter and cleaner way to move workers and their equipment to and from the work face in a raise and eliminates the need for adding lengths of hose as the raise climber ascends and eliminates the emission of harmful inhalants. The battery powered system also enables high efficiency area lighting to be used at the work face, and as the raise climber descends in the raise, the electric drives can reverse operation to recharge the batteries.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: January 29, 2013
    Assignee: J.S. Redpath Limited
    Inventor: Rick T. Jylha
  • Patent number: 8172499
    Abstract: A portable raise climbing system is provided that comprises a starter box for interfacing with an existing raise climb track, a raise climber that is deployed by the system onto the existing track for normal raise excavation operations, and a transporter. The transporter is configured to carry the raise climber from site to site by interfacing with moving equipment. The moving equipment preferably includes a front hydraulic quick connect/disconnect lift system, e.g. front-end loader, forklift, plough, scooptram, etc.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: May 8, 2012
    Assignee: J.S. Redpath Limited
    Inventor: Randy E. Grenon
  • Publication number: 20110308890
    Abstract: A portable raise climbing system is provided that comprises a starter box for interfacing with an existing raise climb track, a raise climber that is deployed by the system onto the existing track for normal raise excavation operations, and a transporter. The transporter is configured to carry the raise climber from site to site by interfacing with moving equipment. The moving equipment preferably includes a front hydraulic quick connect/disconnect lift system, e.g. front-end loader, forklift, plough, scooptram, etc.
    Type: Application
    Filed: August 30, 2011
    Publication date: December 22, 2011
    Applicant: J.S. Redpath Limited
    Inventor: Randy E. Grenon
  • Patent number: 8021098
    Abstract: A portable raise climbing system is provided that comprises a starter box for interfacing with an existing raise climb track, a raise climber that is deployed by the system onto the existing track for normal raise excavation operations, and a transporter. The transporter is configured to carry the raise climber from site to site by interfacing with moving equipment. The moving equipment preferably includes a front hydraulic quick connect/disconnect lift system, e.g. front-end loader, forklift, plough, scooptram, etc.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: September 20, 2011
    Assignee: J.S. Redpath Limited
    Inventor: Randy E. Grenon
  • Patent number: 7987794
    Abstract: A side-shift raise climbing system is provided that utilizes a side-cut excavated into the wall of the access drift for a raise in a mine. A transfer section is incorporated into the existing length of rail servicing the raise. The transfer section includes a laterally transferable rail that can be detached from the existing rail and shifted along a set of monorails that extend into the side-cut. The transfer section enables a raise climber, when parked thereon, to be shifted out of the access drift without requiring additional access drifts or parking/nesting areas to accommodate the use of muck removal equipment.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: August 2, 2011
    Assignee: J. S. Redpath Limited
    Inventor: Randy E. Grenon
  • Patent number: 7293615
    Abstract: An earth boring apparatus for sinking shafts and removing shaft material from the shaft, the apparatus having at least two decks; hydraulic means for allowing movement of the decks relative to one another; releasable anchoring means associated with the decks for engaging walls of the shaft to secure the apparatus in a stationary position; whereby the releasable anchoring means of one of the decks engages the wall while the releasable anchoring means of the other deck is released from the wall to allow motion of the other deck along the shaft, in cooperation with the hydraulic means. The apparatus also includes guide means for forcing a bucket for hoisting shaft material from the shaft along a predetermined path, and an in-stage cut-boom drill.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: November 13, 2007
    Assignee: J.S. Redpath Limited
    Inventor: Morris J. Medd