Patents by Inventor Alexander Hamilton Lewis-Gray
Alexander Hamilton Lewis-Gray has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240109079Abstract: In one form, the present invention is a Batch Centrifugal Concentrator adapted to mitigate the adverse effects associated with dirty feedwater including a rotary bowl having means to clear solid particulate matter in a high velocity flow stream. In another form, the present invention is a seal assembly adapted for use with a batch centrifugal concentrator. The seal assembly including a non-rotating lower portion and a rotating upper portion. The non-rotating lower portion includes a water in/out port, and the rotating upper portion includes a water in/out port. Each port is interconnected by a conduit that is adapted to enable fluid to flow into, through and out of the seal assembly. A gap is provided between the said lower and upper portions. The stationary portion includes an air inlet port that is adapted to create and maintain a zone of positive pressure within said gap.Type: ApplicationFiled: January 28, 2022Publication date: April 4, 2024Inventor: Alexander Hamilton LEWIS-GRAY
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Patent number: 11944985Abstract: The present invention is a segmented bowl for a batch centrifugal concentrator constructed from a plurality of segments that are each placed adjacently to one another, so that each segment is in intimate contact with its neighbouring segments, so that when a sufficient number of segments are put into place, they form the bowl of the batch centrifugal concentrator.Type: GrantFiled: January 25, 2019Date of Patent: April 2, 2024Assignee: GEKKO SYSTEMS PTY LTD.Inventor: Alexander Hamilton Lewis-Gray
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Patent number: 11506582Abstract: Contemplated is a sensor system for use with a measuring device. The measuring device being of the type adapted to measure the volume of a desired solid component in a sample volume of a solid-liquid slurry obtained from either a carbon-in-pulp or carbon-in-leach process. The solid-liquid slurry comprises granular carbon particles, ore pulp, and water. The carbon-in-pulp or carbon-in-leach process includes at least one retention tank. The measurement device including: a receptacle for receiving the sample volume of the slurry; a screen provided in the receptacle for separating out the desired solid component from a remainder of the slurry. The solid component is retained in the receptacle to form a bed therein and the remainder is exhausted from the receptacle. The sensor system measures in either the retained solid component, or the exhausted remainder, or both one of: pH; dissolved oxygen; pulp density or carbon content.Type: GrantFiled: August 2, 2018Date of Patent: November 22, 2022Inventor: Alexander Hamilton Lewis-Gray
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Publication number: 20220003707Abstract: The present invention is a wear sensing and monitoring system including: at least one sensor node, and wireless communication means, and a gateway node, and a remote monitoring and management node, wherein the wireless communication means are adapted to enable the at least one sensor node to have at least one-way wireless communication from the node to the gateway node. The gateway node is adapted to have at least one way wired or wireless communication from the gateway node to the remote monitoring and management node. Note that the two nodes may be included in the one device.Type: ApplicationFiled: November 13, 2019Publication date: January 6, 2022Inventors: Alexander Hamilton LEWIS-GRAY, Richard David GOLDBERG, Md Shamsul AREFIN, Abbas Zahedi KOUZANI
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Publication number: 20210046488Abstract: The present invention is a segmented bowl for a batch centrifugal concentrator constructed from a plurality of segments that are each placed adjacently to one another, so that each segment is in intimate contact with its neighbouring segments, so that when a sufficient number of segments are put into place, they form the bowl of the batch centrifugal concentrator.Type: ApplicationFiled: January 25, 2019Publication date: February 18, 2021Inventor: Alexander Hamilton LEWIS-GRAY
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Publication number: 20200166441Abstract: Contemplated is a sensor system for use with a measuring device. The measuring device being of the type adapted to measure the volume of a desired solid component in a sample volume of a solid-liquid slurry obtained from either a carbon-in-pulp or carbon-in-leach process. The solid-liquid slurry comprises granular carbon particles, ore pulp, and water. The carbon-in-pulp or carbon-in-leach process includes at least one retention tank. The measurement device including: a receptacle for receiving the sample volume of the slurry; a screen provided in the receptacle for separating out the desired solid component from a remainder of the slurry. The solid component is retained in the receptacle to form a bed therein and the remainder is exhausted from the receptacle. The sensor system measures in either the retained solid component, or the exhausted remainder, or both one of: pH; dissolved oxygen; pulp density or carbon content.Type: ApplicationFiled: August 2, 2018Publication date: May 28, 2020Inventor: Alexander Hamilton LEWIS-GRAY
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Publication number: 20180095011Abstract: In one form of the present invention is an apparatus that is capable of periodically diverting at least a portion of a slurry flow from a processing facility and collecting it into a container, such as a bucket. The volume and weight of the collected sample can then be ascertained, and the bulk density of the sample can be derived, and the bulk density data can then be sent via wired or wireless communication means to the processing facility so that they can take steps to alter the characteristics of the slurry flow. In another form, of the present invention, the periodically collected sample from the slurry flow is collected via the apparatus for subsequent analysis in a laboratory.Type: ApplicationFiled: February 15, 2016Publication date: April 5, 2018Inventor: Alexander Hamilton LEWIS-GRAY
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Patent number: 8302890Abstract: A modular ore processing system for concentrating ores includes a plurality of separate modules constructed so as to be serially arranged to form a feed processing system for concentrating a desired material in the ore, wherein the modules are individually transportable to a processing site to be operationally coupled to form the modular ore processing system.Type: GrantFiled: September 5, 2008Date of Patent: November 6, 2012Assignee: Gekko Systems Pty Ltd.Inventor: Alexander Hamilton Lewis-Gray
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Patent number: 7909992Abstract: A separation apparatus comprising, a series of compartments for holding particulate separation material, arranged so as to allow fluid to flow through the compartments in a primary direction from a first compartment in the series to a last compartment in the series, feed means for directing a flow of the fluid into the first of the series of compartments in the primary direction, barrier means for preventing flow of particulate separation material between compartments in the primary direction, and a pumping assembly arranged to pump a mixture of the particulate separation material and the fluid from the first compartment into a recovery stage.Type: GrantFiled: September 9, 2005Date of Patent: March 22, 2011Assignee: Gekko Systems Pty Ltd.Inventors: Alexander Hamilton Lewis-Gray, Nicholas Katsikaros
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Publication number: 20100193618Abstract: A modular ore processing system for concentrating ores includes a plurality of separate modules constructed so as to be serially arranged to form a feed processing system for concentrating a desired material in the ore, wherein the modules are individually transportable to a processing site to be operationally coupled to form the modular ore processing system.Type: ApplicationFiled: September 5, 2008Publication date: August 5, 2010Applicant: GEKKO SYSTEMS PTY LTDInventor: Alexander Hamilton Lewis-Gray
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Patent number: 7743926Abstract: A magnetic separator for a mineral feed comprising, a rotatable drum having an attraction surface, an inlet for receiving a stream of the mineral feed and directing it past the rotating drum, means for generating a magnetic field to attract magnetic components in the feed to the attraction surface, a first zone for take off of non-magnetic components of the mineral feed, and a second zone for take off of the magnetic components, wherein the magnetic field generating means are adapted to subject the magnetic components to at least one reversal of polarity of the magnetic field as the drum rotates.Type: GrantFiled: August 18, 2005Date of Patent: June 29, 2010Assignee: GEKKO Systems Pty LtdInventor: Alexander Hamilton Lewis-Gray
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Publication number: 20080135460Abstract: A separation apparatus comprising, a series of compartments for holding particulate separation material, arranged so as to allow fluid to flow through the compartments in a primary direction from a first compartment in the series to a last compartment in the series, feed means for directing a flow of the fluid into the first of the series of compartments in the primary direction, barrier means for preventing flow of particulate separation material between compartments in the primary direction, and a pumping assembly arranged to pump a mixture of the particulate separation material and the fluid from the first compartment into a recovery stage.Type: ApplicationFiled: September 9, 2005Publication date: June 12, 2008Inventors: Alexander Hamilton Lewis-Gray, Nicholas Katsikaros
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Patent number: 6613271Abstract: Apparatus and method for continuously separating a dense valuable material such as gold from a feed including a grinding mill (2) which directs a crushed feed through hydrocyclones (9) for separation into a light and dense fraction. The dense fraction is concentrated further by in Line Pressure Jigs (16,17) in line and the concentrate (23) is leached in a rotating leaching reactor (45). The resulting pregnant liquor is subjected to electrowinning (83) to recover gold and the spent liquor is recycled.Type: GrantFiled: September 12, 2000Date of Patent: September 2, 2003Inventor: Alexander Hamilton Lewis-Gray