Patents Assigned to MagnaDrive Corporation
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Patent number: 10305360Abstract: A balanced magnetic rotor assembly is disclosed. The balanced rotor assembly including a driver rotor assembly having a first driver rotor assembly and a second driver rotor assembly arranged about a rotational axis and being spaced apart from each other a distance along the rotational axis, and a load rotor being arranged about the rotational axis and arranged between the first driver rotor and the second driver rotor.Type: GrantFiled: November 11, 2016Date of Patent: May 28, 2019Assignee: MagnaDrive CorporationInventors: Rian Rustvold, Jeongkwan Lee, Geoffrey Reynolds Harmon
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Publication number: 20140332194Abstract: A heat sink element for a device is operable by relative rotation of a conductor rotor assembly and a magnet rotor assembly. The heat sink element includes a base portion and a plurality of fins. The base portion includes a mounting face that is sized and dimensioned to be coupled to the conductor rotor assembly, and an opposing convective heat transfer face. The plurality of fins extend from the convective heat transfer face of the base portion. Adjacent fins are separated by a channel that extends along a longitudinal direction of the fins. The fins include at least one surface disruption on a top surface thereof.Type: ApplicationFiled: February 13, 2014Publication date: November 13, 2014Applicant: MagnaDrive CorporationInventors: Dan Durland, Mike Tomczak, Jeongkwan Lee, Dennis Noson
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Publication number: 20140269837Abstract: A system to continuously and redundantly monitor a magnetic drive system includes temperature sensors coupled to the magnetic drive system. The temperature sensors are coupled to a transmitter, which generates output signals representing the temperatures of the temperature sensors. The system includes a transreceiver and a controller, where the transreceiver is coupled to the transmitter and configured to receive the output signals of the transmitter. The controller is communicatively coupled to the transreceiver and the magnetic drive system and is configured to control operation of the magnetic drive system based on one or more signals received from the transreceiver.Type: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: MagnaDrive CorporationInventors: Dan Durland, Mike Tomczak, Jeongkwan Lee, Stephen Knudsen
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Publication number: 20140239762Abstract: A heat sink element for an adjustable speed magnetic drive unit operable by relative rotation of a conductor rotor assembly and a magnet rotor assembly includes a base portion and a plurality of groupings of fins. The base portion includes a mounting face that is sized and dimensioned to be coupled to the conductor rotor assembly, and an opposing convective heat transfer face. The plurality of groupings of fins extend from the convective heat transfer face of the base portion. Adjacent fins in each grouping of fins are separated by a channel that extends along a longitudinal direction of the fins. The plurality of groupings of fins are separated by at least one slot that extends substantially transverse to the longitudinal direction.Type: ApplicationFiled: February 13, 2014Publication date: August 28, 2014Applicant: MagnaDrive CorporationInventors: Dan Durland, Jason Covey, Mike Tomczak, Jeongkwan Lee, Stephen Knudsen
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Patent number: 7453177Abstract: The magnetic coupling system of the present invention overcomes drawbacks experienced by the prior art. A coupling system in accordance with one embodiment of the invention comprises a rotor assembly having a first mount portion connectable to a first shaft. A conductor assembly having a second mount portion is connectable to a second shaft. The second mount portion has first and second sections coupleable to each other and being independently positionable adjacent to the magnet holder. A first electro-conductive member is attached to the first section and positioned adjacent to the magnet holder. A second electro-conductive member is attached to the second section and positioned adjacent to the magnet holder. The first and second electro-conductive members are positioned adjacent to each other and spaced apart from the magnet holder by a gap.Type: GrantFiled: November 16, 2005Date of Patent: November 18, 2008Assignee: MagnaDrive CorporationInventors: Greg S. Highfill, Loern Halverson, Chris Will, Ricardo Contreras
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Publication number: 20060170304Abstract: The magnetic coupling system of the present invention overcomes drawbacks experienced by the prior art. A coupling system in accordance with one embodiment of the invention comprises a rotor assembly having a first mount portion connectable to a first shaft. A conductor assembly having a second mount portion is connectable to a second shaft. The second mount portion has first and second sections coupleable to each other and being independently positionable adjacent to the magnet holder. A first electro-conductive member is attached to the first section and positioned adjacent to the magnet holder. A second electro-conductive member is attached to the second section and positioned adjacent to the magnet holder. The first and second electro-conductive members are positioned adjacent to each other and spaced apart from the magnet holder by a gap.Type: ApplicationFiled: November 16, 2005Publication date: August 3, 2006Applicant: MagnaDrive CorporationInventors: Greg Highfill, Loern Halverson, Chris Will, Ricardo Contreras
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Patent number: 6682430Abstract: An adjustable coupler has a group of magnet rotors with permanent magnets separated by air gaps from non-ferrous conductor rotors presented by a group of conductor rotors. One of the rotors is mounted to its shaft via a slidable hub. The hub and the rotor attached thereto rotate with the shaft, but are movable lengthwise along the shaft. The air gaps are adjusted by axial movement of the hub and one of the groups relative to the other to vary the slip of the coupler and control the load speed under varying load conditions.Type: GrantFiled: March 15, 2001Date of Patent: January 27, 2004Assignee: MagnaDrive CorporationInventor: Richard Killen
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Patent number: 6577037Abstract: In a magnetic coupler, a pair of magnet rotors is slidably mounted on rods. Ferrous material on the conductor rotors attracts the permanent magnets in the magnet rotors. Under static or relative static conditions, the attractive force urges the magnet rotors toward the conductor rotors to create a minimum, operational air gap therebetween. When there is a significant relative rotational velocity between the magnet rotors and the conductor rotors, a repulsion force urges the rotors apart. During start-up, latch arms retain the magnet rotors apart from the conductor rotors by a larger, soft-start air gap. During operation, centrifugal force moves the latch arms out of their active position. If the rotational speed of the load shaft decreases rapidly during operation, the magnet rotors move apart from the conductor rotors by a still larger, fully disengaged air gap.Type: GrantFiled: July 3, 2001Date of Patent: June 10, 2003Assignee: MagnaDrive CorporationInventors: Richard Killen, Bruce D. Densmore, John L. Brockman, Karl J. Lamb, Toby Merrill
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Publication number: 20030006661Abstract: In a magnetic coupler, a pair of magnet rotors is slidably mounted on rods. Ferrous material on the conductor rotors attracts the permanent magnets in the magnet rotors. Under static or relative static conditions, the attractive force urges the magnet rotors toward the conductor rotors to create a minimum, operational air gap therebetween. When there is a significant relative rotational velocity between the magnet rotors and the conductor rotors, a repulsion force urges the rotors apart. During start-up, latch arms retain the magnet rotors apart from the conductor rotors by a larger, soft-start air gap. During operation, centrifugal force moves the latch arms out of their active position. If the rotational speed of the load shaft decreases rapidly during operation, the magnet rotors move apart from the conductor rotors by a still larger, fully disengaged air gap.Type: ApplicationFiled: July 3, 2001Publication date: January 9, 2003Applicant: MagnaDrive CorporationInventors: Richard Killen, Bruce D. Densmore, John L. Brockman, Karl J. Lamb, Toby Merrill