Patents by Inventor Jayaraman Krishnasamy
Jayaraman Krishnasamy 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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Patent number: 9517558Abstract: A time-optimal trajectory generation method, for a robotic manipulator having a transport path with at least one path segment, comprising generating a forward time-optimal trajectory of the manipulator along the at least one path segment from a start point of the at least one path segment towards an end point of the at least one path segment, generating a reverse time-optimal trajectory of the manipulator along the at least one path segment from the end point towards the start point of the at least one path segment, and combining the time-optimal forward and reverse trajectories to obtain a complete time-optimal trajectory, where the forward and reverse trajectories of the at least one path segment are blended together with a smoothing bridge joining the time-optimal forward and reverse trajectories in a position-velocity reference frame with substantially no discontinuity between the time-optimal forward and reverse trajectories.Type: GrantFiled: August 30, 2012Date of Patent: December 13, 2016Assignee: Brooks Automation Inc.Inventors: Jayaraman Krishnasamy, Martin Hosek
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Publication number: 20160226321Abstract: An apparatus includes a motor having a rotor; and a stator, where the rotor is located at least partially in a rotor receiving area of the stator, where the stator includes at least one coil winding and teeth, where the at least one coil winding is located on at least some of the teeth, where the teeth include a first set of the teeth and a second set of the teeth, where the teeth of the first set of teeth are longer in a radial direction from the rotor receiving area than the teeth of the second set of teeth.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Inventors: Jayaraman Krishnasamy, Martin Hosek, Dennis Poole
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Publication number: 20160133493Abstract: A substrate processing apparatus including a frame, a first SCARA arm connected to the frame, including an end effector, configured to extend and retract along a first radial axis; a second SCARA arm connected to the frame, including an end effector, configured to extend and retract along a second radial axis, the SCARA arms having a common shoulder axis of rotation; and a drive section coupled to the SCARA arms is configured to independently extend each SCARA arm along a respective radial axis and rotate each SCARA arm about the common shoulder axis of rotation where the first radial axis is angled relative to the second radial axis and the end effector of a respective arm is aligned with a respective radial axis, wherein each end effector is configured to hold at least one substrate and the end effectors are located on a common transfer plane.Type: ApplicationFiled: January 5, 2016Publication date: May 12, 2016Inventors: Robert T. Caveney, Jayaraman Krishnasamy, Ulysses Gilchrist, Michell Drew, Jairo T. Moura
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Publication number: 20160043602Abstract: A motor comprises a stator comprising at least one core; a coil wound on the at least one core of the stator; a rotor having a rotor pole and being rotatably mounted relative to the stator; and at least one magnet disposed between the rotor and the stator. The at least one core comprises a composite material defined by iron-containing particles having an alumina layer disposed thereon.Type: ApplicationFiled: September 30, 2014Publication date: February 11, 2016Inventors: Martin Hosek, Sripati Sah, Jayaraman Krishnasamy
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Patent number: 9230841Abstract: A substrate processing apparatus including a frame, a first SCARA arm connected to the frame, including an end effector, configured to extend and retract along a first radial axis; a second SCARA arm connected to the frame, including an end effector, configured to extend and retract along a second radial axis, the SCARA arms having a common shoulder axis of rotation; and a drive section coupled to the SCARA arms is configured to independently extend each SCARA arm along a respective radial axis and rotate each SCARA arm about the common shoulder axis of rotation where the first radial axis is angled relative to the second radial axis and the end effector of a respective arm is aligned with a respective radial axis, wherein each end effector is configured to hold at least one substrate and the end effectors are located on a common transfer plane.Type: GrantFiled: December 22, 2014Date of Patent: January 5, 2016Assignee: Brooks Automation, Inc.Inventors: Ulysses Gilchrist, Robert T. Caveney, Jayaraman Krishnasamy, Mitchell Drew, Jairo T. Moura
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Publication number: 20150168496Abstract: A variable reluctance motor load mapping apparatus includes a frame, an interface disposed on the frame configured for mounting a variable reluctance motor, a static load cell mounted to the frame and coupled to the variable reluctance motor, and a controller communicably coupled to the static load cell and the variable reluctance motor, the controller being configured to select at least one motor phase of the variable reluctance motor, energize the at least one motor phase, and receive motor operational data from at least the static load cell for mapping and generating an array of motor operational data look up tables.Type: ApplicationFiled: November 13, 2014Publication date: June 18, 2015Inventors: Jairo T. MOURA, Nathan SPIKER, Aaron GAWLIK, Jayaraman KRISHNASAMY
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Publication number: 20150137651Abstract: A motor including a sealed rotor with at least one salient rotor pole and a stator comprising at least one salient stator pole having an excitation winding associated therewith and interfacing with the at least one salient rotor pole to effect an axial flux circuit between the at least one salient stator pole and the at least one salient rotor pole.Type: ApplicationFiled: November 13, 2014Publication date: May 21, 2015Inventors: Jairo T. MOURA, Jayaraman KRISHNASAMY
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Publication number: 20150118407Abstract: A soft magnetic material comprises a plurality of iron-containing particles and an insulating layer on the iron-containing particles, the insulating layer comprising an oxide. The soft magnetic material is an aggregate of permeable micro-domains separated by insulation boundaries.Type: ApplicationFiled: September 30, 2014Publication date: April 30, 2015Inventors: Martin Hosek, Sripati Sah, Jayaraman Krishnasamy
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Publication number: 20150110584Abstract: A substrate processing apparatus including a frame, a first SCARA arm connected to the frame, including an end effector, configured to extend and retract along a first radial axis; a second SCARA arm connected to the frame, including an end effector, configured to extend and retract along a second radial axis, the SCARA arms having a common shoulder axis of rotation; and a drive section coupled to the SCARA arms is configured to independently extend each SCARA arm along a respective radial axis and rotate each SCARA arm about the common shoulder axis of rotation where the first radial axis is angled relative to the second radial axis and the end effector of a respective arm is aligned with a respective radial axis, wherein each end effector is configured to hold at least one substrate and the end effectors are located on a common transfer plane.Type: ApplicationFiled: December 22, 2014Publication date: April 23, 2015Inventors: Ulysses Gilchrist, Robert T. Caveney, Jayaraman Krishnasamy, Mitchell Drew, Jairo T. Moura
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Patent number: 8918203Abstract: A substrate processing apparatus including a frame, a first SCARA arm connected to the frame, including an end effector, configured to extend and retract along a first radial axis; a second SCARA arm connected to the frame, including an end effector, configured to extend and retract along a second radial axis, the SCARA arms having a common shoulder axis of rotation; and a drive section coupled to the SCARA arms is configured to independently extend each SCARA arm along a respective radial axis and rotate each SCARA arm about the common shoulder axis of rotation where the first radial axis is angled relative to the second radial axis and the end effector of a respective arm is aligned with a respective radial axis, wherein each end effector is configured to hold at least one substrate and the end effectors are located on a common transfer plane.Type: GrantFiled: March 12, 2012Date of Patent: December 23, 2014Assignee: Brooks Automation, Inc.Inventors: Ulysses Gilchrist, Robert T. Caveney, Jayaraman Krishnasamy, Mitchell Drew, Jairo T. Moura
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Publication number: 20140249675Abstract: A time-optimal trajectory generation method, for a robotic manipulator having a transport path with at least one path segment, comprising generating a forward time-optimal trajectory of the manipulator along the at least one path segment from a start point of the at least one path segment towards an end point of the at least one path segment, generating a reverse time-optimal trajectory of the manipulator along the at least one path segment from the end point towards the start point of the at least one path segment, and combining the time-optimal forward and reverse trajectories to obtain a complete time-optimal trajectory, where the forward and reverse trajectories of the at least one path segment are blended together with a smoothing bridge joining the time-optimal forward and reverse trajectories in a position-velocity reference frame with substantially no discontinuity between the time-optimal forward and reverse trajectories.Type: ApplicationFiled: August 30, 2012Publication date: September 4, 2014Applicant: Brooks Automation, Inc.Inventors: Jayaraman Krishnasamy, Martin Hosek
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Patent number: 8801069Abstract: An apparatus for gripping a substrate on its peripheral edge including a substrate support having proximate and distal ends, at least one distal rest pad disposed at the distal end, the at least one distal rest pad includes a back stop portion and is configured to support the peripheral edge of the substrate, at least one proximate rest pad disposed at the proximate end, the at least one proximate rest pad being configured to support the peripheral edge of the substrate, and an active contact member assembly disposed at the proximate end, the active contact member assembly including a pusher member, a contact member and a rotatable coupling member that are reciprocably movable towards the distal end for urging the substrate against the back stop portion, the contact member being rotatably secured to the pusher member and free to rotate about an axis of the rotatable coupling member.Type: GrantFiled: February 28, 2011Date of Patent: August 12, 2014Assignee: Brooks Automation, Inc.Inventors: Martin Hosek, Jayaraman Krishnasamy, Leonard T. Lilliston, III
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Publication number: 20120232690Abstract: A substrate processing apparatus including a frame, a first SCARA arm connected to the frame, including an end effector, configured to extend and retract along a first radial axis; a second SCARA arm connected to the frame, including an end effector, configured to extend and retract along a second radial axis, the SCARA arms having a common shoulder axis of rotation; and a drive section coupled to the SCARA arms is configured to independently extend each SCARA arm along a respective radial axis and rotate each SCARA arm about the common shoulder axis of rotation where the first radial axis is angled relative to the second radial axis and the end effector of a respective arm is aligned with a respective radial axis, wherein each end effector is configured to hold at least one substrate and the end effectors are located on a common transfer plane.Type: ApplicationFiled: March 12, 2012Publication date: September 13, 2012Applicant: Brooks Automation, Inc.Inventors: Ulysses Gilchrist, Robert T. Caveney, Jayaraman Krishnasamy, Mitchell Drew, Jairo T. Moura
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Publication number: 20110241367Abstract: An apparatus for gripping a substrate on its peripheral edge including a substrate support having proximate and distal ends, at least one distal rest pad disposed at the distal end, the at least one distal rest pad includes a back stop portion and is configured to support the peripheral edge of the substrate, at least one proximate rest pad disposed at the proximate end, the at least one proximate rest pad being configured to support the peripheral edge of the substrate, and an active contact member assembly disposed at the proximate end, the active contact member assembly including a pusher member, a contact member and a rotatable coupling member that are reciprocably movable towards the distal end for urging the substrate against the back stop portion, the contact member being rotatably secured to the pusher member and free to rotate about an axis of the rotatable coupling member.Type: ApplicationFiled: February 28, 2011Publication date: October 6, 2011Applicant: Brooks Automation, Inc.Inventors: Martin Hosek, Jayaraman Krishnasamy, Leonard T. Lilliston, III