Patents Assigned to J.S. Redpath Limited
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Patent number: 8362721Abstract: 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: GrantFiled: February 20, 2009Date of Patent: January 29, 2013Assignee: J.S. Redpath LimitedInventor: Rick T. Jylha
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Patent number: 8172499Abstract: 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: GrantFiled: August 30, 2011Date of Patent: May 8, 2012Assignee: J.S. Redpath LimitedInventor: Randy E. Grenon
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Publication number: 20110308890Abstract: 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: ApplicationFiled: August 30, 2011Publication date: December 22, 2011Applicant: J.S. Redpath LimitedInventor: Randy E. Grenon
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Patent number: 8021098Abstract: 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: GrantFiled: June 19, 2008Date of Patent: September 20, 2011Assignee: J.S. Redpath LimitedInventor: Randy E. Grenon
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Patent number: 7987794Abstract: 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: GrantFiled: September 11, 2008Date of Patent: August 2, 2011Assignee: J. S. Redpath LimitedInventor: Randy E. Grenon
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Patent number: 7293615Abstract: 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: GrantFiled: November 22, 2004Date of Patent: November 13, 2007Assignee: J.S. Redpath LimitedInventor: Morris J. Medd