Patents Assigned to General Plasma, Inc.
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Patent number: 10989343Abstract: A quick coupling for connecting fluid lines with one-handed push-to-connect and pull-to-disconnect operation is described. The quick coupling achieves this preferred functionality with a minimum number parts, the quick coupling having only one spring and one dynamic seal. In addition to fluid carrying applications the quick coupling can be used for tool holding and power transmission.Type: GrantFiled: April 25, 2016Date of Patent: April 27, 2021Assignee: General Plasma Inc.Inventor: John E. Madocks
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Patent number: 10811236Abstract: A rotary sputter magnetron assembly for use in sputtering target material onto a substrate is provided. The assembly comprises a longitudinally extending target tube having a longitudinal central axis, said target tube extending about a magnet array that is configured to generate a plasma confining magnetic field adjacent the target tube, said target tube supported for rotation about its longitudinal central axis and a pair of side shunts positioned parallel to the longitudinal central axis, and on opposing lengthwise sides of said target tube.Type: GrantFiled: October 26, 2015Date of Patent: October 20, 2020Assignee: General Plasma, Inc.Inventors: Phong Ngo, John E. Madocks
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Patent number: 10273570Abstract: An apparatus for coating a substrate is provided that includes a racetrack-shaped plasma source having two straight portions and at least one terminal turnaround portion connecting said straight portions. A tubular target formed of a target material that forms a component of the coating has an end. The target is in proximity to the plasma source for sputtering of the target material. The target is secured to a tubular backing cathode, with both being rotatable about a central axis. A set of magnets are arranged inside the cathode to move an erosion zone aligned with the terminal turnaround toward the end of the target as the target is utilized to deposit the coating on the substrate. Target utilization of up to 87 weight percent the initial target weight is achieved.Type: GrantFiled: June 13, 2016Date of Patent: April 30, 2019Assignee: General Plasma, Inc.Inventors: John E. Madocks, Patrick Lawrence Morse, Phong Ngo
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Patent number: 10134557Abstract: A linear anode layer ion source is provided that includes a top pole having a linear ion emitting slit. An anode under the top pole has a slit aligned with the top pole ion emitting slit. At least one magnet creates a magnetic field that passes through the anode slit. Wherein the width of the anode slit is 3 mm or less. A process of generating an accelerated ion beam is also provided that includes flowing a gas into proximity to said anode. By energizing a power supply electron flow is induced to the anode and the gas is ionized. Accelerating the ions from the anode through the linear ion emitting slit generates an accelerated ion beam by a process superior to that using a racetrack-shaped slit.Type: GrantFiled: June 12, 2014Date of Patent: November 20, 2018Assignee: General Plasma, Inc.Inventor: John E. Madocks
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Patent number: 9388490Abstract: An apparatus for coating a substrate is provided that includes a racetrack-shaped plasma source having two straight portions and at least one terminal turnaround portion connecting said straight portions. A tubular target formed of a target material that forms a component of the coating has an end. The target is in proximity to the plasma source for sputtering of the target material. The target is secured to a tubular backing cathode, with both being rotatable about a central axis. A set of magnets are arranged inside the cathode to move an erosion zone aligned with the terminal turnaround toward the end of the target as the target is utilized to deposit the coating on the substrate. Target utilization of up to 87 weight percent the initial target weight is achieved.Type: GrantFiled: October 26, 2010Date of Patent: July 12, 2016Assignee: General Plasma, Inc.Inventors: John E. Madocks, Patrick Lawrence Morse, Phong Ngo
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Patent number: 8535490Abstract: A new and useful rotatable sputter magnetron assembly is provided, that addresses the issue of uneven wear of the target electrode tube. According to the principles of the present invention, a rotatable sputter magnetron assembly for use in magnetron sputtering target material onto a substrate comprises a. a longitudinally extending tubular shaped target electrode tube having a longitudinal central axis, b. the target electrode tube extending about a magnet bar that is configured to generate a plasma confining magnetic field adjacent the target electrode tube, c. the magnet bar being held substantially stationary within the target electrode tube, and d. the target electrode tube supported for rotation about its longitudinal central axis and for axial movement along its longitudinal central axis, so that wear of the target electrode tube can be controlled by moving the target electrode tube axially during magnetron sputtering of the target material.Type: GrantFiled: June 6, 2008Date of Patent: September 17, 2013Assignee: General Plasma, Inc.Inventors: John Madocks, Patrick Lawrence Morse
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Patent number: 8304744Abstract: A closed drift ion source is provided, having an anode that serves as both the center magnetic pole and as the electrical anode. The anode has an insulating material cap that produces a closed drift region to further increase the electrical impedance of the source. The ion source can be configured as a round, conventional ion source for space thruster applications or as a long, linear ion source for uniformly treating large area substrates. A particularly useful implementation uses the present invention as an anode for a magnetron sputter process.Type: GrantFiled: October 19, 2007Date of Patent: November 6, 2012Assignee: General Plasma, Inc.Inventor: John Eric Madocks
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Publication number: 20110236591Abstract: A process for powering an electrical load includes applying a rectified alternating current waveform across the load for a first time period with only a single power supply for at least two half cycles. At least one half cycle of an alternating current waveform of opposite polarity are then applied relative to the rectified alternating current waveform across the load for a second time period. Rectified alternating current waveform is then again applied across the load for at least two half cycles for a third time period to power the electrical load. The rectified alternating current waveform can be applied a direct current offset. A power supply is provided for provided power across the load according to this process.Type: ApplicationFiled: November 30, 2009Publication date: September 29, 2011Applicant: General Plasma INc.Inventors: John E. Madocks, Curtis Charles Camus, Patrick Marcus
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Patent number: 7993496Abstract: In some embodiments, the invention includes a cylindrical cathode target assembly for use in sputtering target material onto a substrate that comprises a generally cylindrical target, means for rotating the target about its axis during a sputtering operation, an elongated magnet carried within the target for generation of a plasma-containing magnetic field exterior to but adjacent the target, a framework for supporting the magnet against rotation within the target, and a power train for causing the magnet to oscillate within and axially of the target in a substantially asynchronous manner to promote generally uniform target utilization along its length, as well as its method of use. In some embodiments, the magnet is oscillated in response to rotation of the target.Type: GrantFiled: June 30, 2005Date of Patent: August 9, 2011Assignees: Cardinal CG Company, General Plasma, Inc.Inventors: Klaus Hartig, Steve E. Smith, John E. Madocks
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Patent number: 7932678Abstract: A magnetic mirror plasma source includes a gap separating a substrate from a cathode. A mirror magnetic field extends between the substrate and the cathode through the gap. The magnetic field lines at a proximal surface of the substrate are at least two times as strong as those field lines entering the cathode. An anode is disposed such that a closed loop electron Hall current containment region is formed within the magnetic field.Type: GrantFiled: September 13, 2004Date of Patent: April 26, 2011Assignee: General Plasma, Inc.Inventor: John Madocks
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Publication number: 20100207529Abstract: A closed drift ion source is provided, having an anode that serves as both the center magnetic pole and as the electrical anode. The anode has an insulating material cap that produces a closed drift region to further increase the electrical impedance of the source. The ion source can be configured as a round, conventional ion source for space thruster applications or as a long, linear ion source for uniformly treating large area substrates. A particularly useful implementation uses the present invention as an anode for a magnetron sputter process.Type: ApplicationFiled: October 19, 2007Publication date: August 19, 2010Applicant: General Plasma, Inc.Inventor: John Eric Madocks
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Publication number: 20090032393Abstract: A new and useful plasma source is provided, comprising at least one electrode connected to an alternating current power supply and disposed adjacent to a portion of a grounded substrate. The electrode has a center magnet that produces a magnetron plasma at the electrode when the electrode is biased negative by the alternating power supply, and a mirror plasma on the substrate when the electrode is biased positive by the alternating power supply.Type: ApplicationFiled: March 16, 2007Publication date: February 5, 2009Applicant: General Plasma, Inc.Inventor: John Madocks