Patents Assigned to CMTE Development Limited
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Publication number: 20150247888Abstract: The invention provides a method and apparatus for electronically testing the safety of sources of energy such as electrical circuits, in explosive atmospheres such as high risk mining situations, using an electronic spark tester (EST) in place of the known mechanical spark test apparatus (STA). The EST typically uses an analogue subsystem (5) and a digital subsystem (6) connected by a digital to analogue converter (7) and an analogue to digital connector (8) to apply a simulated spark load to the energy source and measure the time varying current response to that load.Type: ApplicationFiled: July 19, 2012Publication date: September 3, 2015Applicant: CMTE Development LimitedInventors: Rajiv Chandra Shekhar, Edward Gus Prochon, Barend Jacobus Pienaar, Paul John Lever
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Patent number: 8930091Abstract: In particular embodiments of the technology, the bulk density of the payload in the bucket of a large electric dragline is measured during the carry phase of dragline operation by scanning the loaded bucket using a boom mounted scanner to provide data relating to the volume of the loaded bucket. Suitable methods can further include calculating the volume enclosed by the surface of the payload and the known base and sides of the bucket to give payload volume, and dividing the payload volume into payload weight data derived from rope length and motor current data to give the payload bulk density. Methods of screening data points originating from surfaces other than the bucket and payload, and methods of dealing with bucket ope and sway are also described and claimed.Type: GrantFiled: October 25, 2011Date of Patent: January 6, 2015Assignee: CMTE Development LimitedInventors: Benjamin Upcroft, Rajiv Chandra Shekhar, Alex Joseph Bewley, Paul J. A. Lever
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Patent number: 8672417Abstract: The present invention uses an Oscillating Disc Cutter (ODC) in a controlled manner to cut rock for assay purposes. The ODC (1) is mounted in an elongate guide frame typically in the form of an open box channel (2). The ODC is located on a carriage (3), the carriage itself mounted on guide rails (4) within the channel (2). The apparatus includes drive means operable to drive the carriage (3) in a rectilinear manner along the rails (4) such that the rails (4) define a cutting path. The ODC cuts a groove of controlled width and depth in a rock face, yielding rock chips that can be used for accurate assay of the face.Type: GrantFiled: January 22, 2008Date of Patent: March 18, 2014Assignee: CMTE Development LimitedInventors: Paul J. A. Lever, Zhiqiang Guan, Muraliganesh Sivadorai
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Patent number: 8515708Abstract: The present invention relates generally to the field of positioning mechanical equipment, and particularly to the likes of mechanical excavation and electric mining shovels. In one embodiment, there is disclosed a system for calibrating the sensors that measure hoist and crowd motions for an electric mining shovel, enabling the position of a bucket to be known with greater accuracy than can be achieved using previously known approaches.Type: GrantFiled: March 31, 2009Date of Patent: August 20, 2013Assignee: CMTE Developement LimitedInventors: Peter Ross McAree, Anthony Walton Reid, Kevin John Austin, Paul Martin Siegrist
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Patent number: 8461831Abstract: The invention provides a method and system for monitoring the flow of ore in block cave mining operations by inserting an active magnetic beacon 1 into an ore body 22 and generating an alternating magnetic signal with the beacon 1. The ore is monitored with a magnetometer (14, 15, 16, 17, 18) to detect the magnetic flux emitted by the beacon 1 thereby determining a position of the beacon. Successive recordings of the position of the magnetic beacon are taken as it moves along with the ore as it “caves”. In this way, flow patterns of the ore may be revealed.Type: GrantFiled: September 13, 2011Date of Patent: June 11, 2013Assignee: CMTE Development LimitedInventors: Barend Jacobus Pienaar, Paul J. A. Lever
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Patent number: 8346512Abstract: Systems and methods for reducing the probability of a collision between a first object, whose trajectory is substantially controlled by an operator input command, and a second object.Type: GrantFiled: August 6, 2007Date of Patent: January 1, 2013Assignee: CMTE Development LimitedInventor: Ross McAree
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Patent number: 8311970Abstract: A method of payload estimation of weight bearing machinery, the method comprising the steps of: (a) creating a series of Kalman filter approximations to the weight bearing machinery for different levels of payload; (b) determining from the series an approximation to the current operating characteristics of the weight bearing machinery; and, (c) utilizing the parameters derived from the step (b) to determine an estimated payload of the weight bearing machinery.Type: GrantFiled: April 19, 2007Date of Patent: November 13, 2012Assignee: CMTE Development LimitedInventors: Peter Ross Mcaree, David Herman Wauge
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Publication number: 20120136542Abstract: In particular embodiments of the technology, the bulk density of the payload in the bucket of a large electric dragline is measured during the carry phase of dragline operation by scanning the loaded bucket using a boom mounted scanner to provide data relating to the volume of the loaded bucket. Suitable methods can further include calculating the volume enclosed by the surface of the payload and the known base and sides of the bucket to give payload volume, and dividing the payload volume into payload weight data derived from rope length and motor current data to give the payload bulk density. Methods of screening data points originating from surfaces other than the bucket and payload, and methods of dealing with bucket ope and sway are also described and claimed.Type: ApplicationFiled: October 25, 2011Publication date: May 31, 2012Applicant: CMTE Developement LimitedInventors: Benjamin Upcroft, Rajiv Chandra Shekhar, Alex Joseph Bewley, Paul J.A. Lever
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Publication number: 20120074931Abstract: The invention provides a method and system for monitoring the flow of ore in block cave mining operations by inserting an active magnetic beacon 1 into the ore body 12 and generating an alternating magnetic signal with the beacon 1. The ore is monitored with a magnetometer (14, 15, 16, 17, 18) to detect the magnetic flux emitted by the beacon 1 thereby determining the position of the beacon. Successive recordings of the position of the magnetic beacon are taken as it moves along with the ore as it “caves”. In this way, the flow patterns of the ore may be revealed.Type: ApplicationFiled: September 13, 2011Publication date: March 29, 2012Applicant: CMTE Development LimitedInventors: Barend Jacobus Pienaar, Paul J.A. Lever
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Patent number: 8011447Abstract: A method of surveying drill holes, typically for use in underground mining situations where the holes are bored using a top hammer drill rig (10), utilizes a survey tool located adjacent the drill bit (1) which is used to log position readings as the drill string is withdrawn from the hole after the drilling operation. In this manner, it is possible to log the actual hole bored by the drill string (3) in real time as the drilling operation proceeds, and show deviation from intended hole positions (5) or (6). The survey tool typically includes an inertial survey package, a power source, and a data logger with the survey package selected from the group comprising commercially known inertial known survey packages, for superior characteristics of resistance to vibration and impact. The survey tool is maintained in a sleeping mode while drilling is undertaken, and activated to provide position data as the drill string is progressively withdrawn from the actual hole path (3).Type: GrantFiled: January 24, 2005Date of Patent: September 6, 2011Assignee: CMTE Development LimitedInventors: Scott David Keniston, Paul J. A. Levers
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Publication number: 20110088290Abstract: A large electric dragline having a housing (35) and boom (37) is provided with spaced apart in-line sheaves (34) and (36) at boom point to separate hoist ropes (31) and (32) which are led to the front and rear of bucket (30) respectively. Differential hoist rope control allows accurate and continuous adjustment of the bucket carry angle during all modes of operation. Also described is a computer control system giving continuous accurate control of carry angle by differential hoist rope operation, with manual selection of mode operation.Type: ApplicationFiled: October 13, 2010Publication date: April 21, 2011Applicant: CMTE Development LimitedInventor: Jeffrey C. Rowlands
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Publication number: 20110029279Abstract: The present invention relates generally to the field of positioning mechanical equipment, and particularly to the likes of mechanical excavation and electric mining shovels. In one embodiment, there is disclosed a system for calibrating the sensors that measure hoist and crowd motions for an electric mining shovel, enabling the position of a bucket to be known with greater accuracy than can be achieved using previously known approaches.Type: ApplicationFiled: March 31, 2009Publication date: February 3, 2011Applicant: CMTE Developement limitedInventors: Peter Ross McAree, Anthony Walton Reid, Kevin John Austin, Paul Martin Siegrist
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Patent number: 7753141Abstract: A drilling rig for drilling an underground borehole (5) into a seam (4) uses coiled metal tubing (8) fed by a tractor unit (11) from a drum (7) to provide a thrust force to a drilling head. The drilling head has a bent-sub assembly giving an angle of deviation which is controlled by rotating the coiled metal tubing in the borehole by way of rotation of the drum (7) in the frame (12) about the axis of the tube in the borehole (5).Type: GrantFiled: July 20, 2006Date of Patent: July 13, 2010Assignees: CMTE Development Limited, AJ Lucas Coal Technologies Pty LimitedInventors: Timothy Gregory Hamilton Meyer, Duncan MacDonald
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Publication number: 20100001736Abstract: The invention provides a method and system for monitoring the flow of ore in block cave mining operations by inserting an active magnetic beacon 1 into the ore body 12 and generating an alternating magnetic signal with the beacon 1. The ore is monitored with a magnetometer (14, 15, 16, 17, 18) to detect the magnetic flux emitted by the beacon 1 thereby determining the position of the beacon. Successive recordings of the position of the magnetic beacon are taken as it moves along with the ore as it “caves”. In this way, the flow patterns of the ore may be revealed.Type: ApplicationFiled: October 26, 2007Publication date: January 7, 2010Applicant: CMTE Development LimitedInventors: Barend Jacobus Pienaar, Paul J.A. Lever
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Publication number: 20090322142Abstract: The present invention uses an Oscillating Disc Cutter (ODC) in a controlled manner to cut rock for assay purposes. The ODC (1) is mounted in an elongate guide frame typically in the form of an open box channel (2). The ODC is located on a carriage (3), the carriage itself mounted on guide rails (4) within the channel (2). The apparatus includes drive means operable to drive the carriage (3) in a rectilinear manner along the rails (4) such that the rails (4) define a cutting path. The ODC cuts a groove of controlled width and depth in a rock face, yielding rock chips that can be used for accurate assay of the face.Type: ApplicationFiled: January 22, 2008Publication date: December 31, 2009Applicant: CMTE Development LimitedInventors: Paul J.A. Lever, Zhiqiang Guan, Muraliganesh Sivadorai
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Publication number: 20090187527Abstract: A method of payload estimation of weight bearing machinery, the method comprising the steps of: (a) creating a series of Kalman filter approximations to the weight bearing machinery for different levels of payload; (b) determining from the series an approximation to the current operating characteristics of the weight bearing machinery; and, (c) utilizing the parameters derived from the step (b) to determine an estimated payload of the weight bearing machinery.Type: ApplicationFiled: April 19, 2007Publication date: July 23, 2009Applicant: CMTE Development LimitedInventors: Peter Ross Mcaree, David Herman Wauge
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Publication number: 20090084605Abstract: The invention provides a coiled tube drilling rig (1) for drilling boreholes. The rig includes a drum (2) mounted about a longitudinal axis (B-B) and adapted for receiving a length of semi-rigid tubing (4) wound onto the drum. An injector unit (10) is provided for deploying the tubing (4) along a tubing deployment axis (A-A) and into a borehole, the deployment axis (A-A) being generally orthogonal to and intersecting the drum rotation axis (B-B). An indexing guide (11), confines the tubing in a indexing zone, between a moveable tangential separation point (14) on the drum and the deployment axis (A-A), to a deployment plane (X). The plane being defined by the location of the deployment axis and the separation pint (14). The drum is configured to pivot with respect to the deployment plane around an axis (C-C) substantially collinear with said deployment axis (A-A).Type: ApplicationFiled: September 25, 2008Publication date: April 2, 2009Applicant: CMTE Development LimitedInventor: Peter Lugg
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Publication number: 20070151761Abstract: A method of surveying drill holes, typically for use in underground mining situations where the holes are bored using a top hammer drill rig (10), utilises a survey tool located adjacent the drill bit (1) which is used to log position readings as the drill string is withdrawn from the hole after the drilling operation. In this manner, it is possible to log the actual hole bored by the drill string (3) in real time as the drilling operation proceeds, and show deviation from intended hole positions (5) or (6). The survey tool typically includes an inertial survey package, a power source, and a data logger with the survey package selected from the group comprising commercially known inertial known survey packages, for superior characteristics of resistance to vibration and impact.Type: ApplicationFiled: January 24, 2005Publication date: July 5, 2007Applicant: CMTE Development LimitedInventors: Scott Keniston, Paul Lever
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Publication number: 20070008938Abstract: A virtual wireless computer network allows communication between a number of regions (F, G, H), which may be beyond normal wireless communication range, by carrying information between regions using mobile stations (5) which travel between regions. Each mobile station transmits and/or receives information by wireless communication to other stations within a region when it is in that region, to update both the stations in that region and the mobile station. One region may include a fixed station (8) hardwired into a backbone network (9). The network has particular application in a mining situation where the mobile stations may be haul trucks (5) carrying information between people 6 and light vehicles (7), with the fixed station at a crusher or shovel (8).Type: ApplicationFiled: September 27, 2004Publication date: January 11, 2007Applicant: CMTE Development LimitedInventors: Eduardo Nebot, Jose Guivant
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Publication number: 20070006492Abstract: A large electric dragline having a house (35) and boom (37) is provided with spaced apart in-line sheaves (34) and (36) at boom point to separate hoist ropes (31) and (32) which are led to the front and rear of bucket (30) respectively. Differential hoist rope control allows accurate and continuous adjustment of the bucket carry angle during all modes of operation. Also described is a computer control system giving continuous accurate control of carry angle by differential hoist rope operation, with manual selection of mode of operation.Type: ApplicationFiled: September 15, 2006Publication date: January 11, 2007Applicant: CMTE Development LimitedInventor: Jeffrey Rowlands