Patents by Inventor Shreyansh Patel
Shreyansh Patel 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: 11622440Abstract: In some aspects, electrodes can include a front portion shaped to matingly engage a nozzle of the plasma cutting system, the front portion having a first end comprising a plasma arc emitter disposed therein; and a rear portion thermally connected to a second end of the front portion, the rear portion shaped to slidingly engage with a complementary swirl ring of the plasma cutting system and including: an annular mating feature extending radially from a proximal end of the rear portion of the electrode to define a first annular width to interface with the swirl ring, the annular mating feature comprising a sealing member configured to form a dynamic seal with the swirl ring to inhibit a flow of a gas from a forward side of the annular mating feature to a rearward side of the annular mating feature.Type: GrantFiled: July 12, 2019Date of Patent: April 4, 2023Assignee: Hypertherm, Inc.Inventors: Sung Je Kim, Jesse A. Roberts, Shreyansh Patel
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Patent number: 11404254Abstract: An ion source with an insertable target holder for holding a solid dopant material is disclosed. The insertable target holder includes a pocket or cavity into which the solid dopant material is disposed. When the solid dopant material melts, it remains contained within the pocket, thus not damaging or degrading the arc chamber. Additionally, the target holder can be moved from one or more positions where the pocket is at least partially in the arc chamber to one or more positions where the pocket is entirely outside the arc chamber. In certain embodiments, a sleeve may be used to cover at least a portion of the open top of the pocket.Type: GrantFiled: February 6, 2019Date of Patent: August 2, 2022Assignee: Varian Semiconductor Equipment Associates, Inc.Inventors: Shreyansh Patel, Graham Wright, Daniel Alvarado, Klaus Becker, Daniel R. Tieger, Stephen Krause
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Patent number: 10827600Abstract: In some aspects, electrodes can include a front portion shaped to matingly engage a nozzle of the plasma cutting system, the front portion having a first end comprising a plasma arc emitter disposed therein; and a rear portion thermally connected to a second end of the front portion, the rear portion shaped to slidingly engage with a complementary swirl ring of the plasma cutting system and including: an annular mating feature extending radially from a proximal end of the rear portion of the electrode to define a first annular width to interface with the swirl ring, the annular mating feature comprising a sealing member configured to form a dynamic seal with the swirl ring to inhibit a flow of a gas from a forward side of the annular mating feature to a rearward side of the annular mating feature.Type: GrantFiled: April 13, 2018Date of Patent: November 3, 2020Assignee: Hypertherm, Inc.Inventors: Sung Je Kim, Jesse A. Roberts, Shreyansh Patel
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Patent number: 10820401Abstract: In some aspects, methods for controlling a plasma arc in a plasma torch of a plasma cutting system in a low operating current mode can include: receiving, by a computing device within the plasma power supply, a command to begin a plasma processing operation; generating a pilot arc command to generate a pilot arc within the plasma torch, the generating of the pilot arc command including directing an electrical signal and a gas flow to the plasma torch, the electrical signal being configured to generate the pilot arc at a current having a first arc amperage magnitude; and generating an operational arc command to facilitate a transition from the pilot arc to an operational plasma arc, the generating of the operational arc command including adjusting the current directed to the plasma torch to be a second arc amperage magnitude that is lower than the first arc amperage magnitude.Type: GrantFiled: August 25, 2017Date of Patent: October 27, 2020Assignee: Hypertherm, Inc.Inventors: Shreyansh Patel, Qinghua Liu, Junsong Mao, Richard Pavlik, Zheng Duan, Bruce P. Altobelli
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Publication number: 20200090916Abstract: An ion source with an insertable target holder for holding a solid dopant material is disclosed. The insertable target holder includes a pocket or cavity into which the solid dopant material is disposed. When the solid dopant material melts, it remains contained within the pocket, thus not damaging or degrading the arc chamber. Additionally, the target holder can be moved from one or more positions where the pocket is at least partially in the arc chamber to one or more positions where the pocket is entirely outside the arc chamber. In certain embodiments, a sleeve may be used to cover at least a portion of the open top of the pocket.Type: ApplicationFiled: February 6, 2019Publication date: March 19, 2020Inventors: Shreyansh Patel, Graham Wright, Daniel Alvarado, Klaus Becker, Daniel R. Tieger, Stephen Krause
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Publication number: 20190335573Abstract: In some aspects, electrodes can include a front portion shaped to matingly engage a nozzle of the plasma cutting system, the front portion having a first end comprising a plasma arc emitter disposed therein; and a rear portion thermally connected to a second end of the front portion, the rear portion shaped to slidingly engage with a complementary swirl ring of the plasma cutting system and including: an annular mating feature extending radially from a proximal end of the rear portion of the electrode to define a first annular width to interface with the swirl ring, the annular mating feature comprising a sealing member configured to form a dynamic seal with the swirl ring to inhibit a flow of a gas from a forward side of the annular mating feature to a rearward side of the annular mating feature.Type: ApplicationFiled: July 12, 2019Publication date: October 31, 2019Inventors: Sung Je Kim, Jesse A. Roberts, Shreyansh Patel
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Patent number: 10314155Abstract: A torch tip assembly of a plasma arc torch is provided for delivering a diffused stream of plasma arc in a gouging operation. The assembly comprises a nozzle including a nozzle body defining a central longitudinal axis extending between a proximal end and a distal end. A nozzle exit orifice of the nozzle body defines at least a bore for conducting the plasma arc therethrough. The assembly also comprises a counter bore feature, disposed relative to the distal end the nozzle body, fluidly connected to the bore and located distally relative to the bore. At least one of the bore or the counter bore feature has a non-circular cross-sectional shape in a plane perpendicular to the longitudinal axis. The non-circular cross-sectional shape is configured to enable a second non-circular cross-sectional shape in the plasma arc that diffuses the plasma arc.Type: GrantFiled: December 5, 2017Date of Patent: June 4, 2019Assignee: Hypertherm, Inc.Inventors: Shreyansh Patel, Clifford G. Darrow, David Agan, Steven Moody, Martin Higgens, E. Michael Shipulski
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Publication number: 20180235066Abstract: In some aspects, electrodes can include a front portion shaped to matingly engage a nozzle of the plasma cutting system, the front portion having a first end comprising a plasma arc emitter disposed therein; and a rear portion thermally connected to a second end of the front portion, the rear portion shaped to slidingly engage with a complementary swirl ring of the plasma cutting system and including: an annular mating feature extending radially from a proximal end of the rear portion of the electrode to define a first annular width to interface with the swirl ring, the annular mating feature comprising a sealing member configured to form a dynamic seal with the swirl ring to inhibit a flow of a gas from a forward side of the annular mating feature to a rearward side of the annular mating feature.Type: ApplicationFiled: April 13, 2018Publication date: August 16, 2018Inventors: Sung Je Kim, Jesse A. Roberts, Shreyansh Patel
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Publication number: 20180139833Abstract: A torch tip assembly of a plasma arc torch is provided for delivering a diffused stream of plasma arc in a gouging operation. The assembly comprises a nozzle including a nozzle body defining a central longitudinal axis extending between a proximal end and a distal end. A nozzle exit orifice of the nozzle body defines at least a bore for conducting the plasma arc therethrough. The assembly also comprises a counter bore feature, disposed relative to the distal end the nozzle body, fluidly connected to the bore and located distally relative to the bore. At least one of the bore or the counter bore feature has a non-circular cross-sectional shape in a plane perpendicular to the longitudinal axis. The non-circular cross-sectional shape is configured to enable a second non-circular cross-sectional shape in the plasma arc that diffuses the plasma arc.Type: ApplicationFiled: December 5, 2017Publication date: May 17, 2018Inventors: Shreyansh Patel, Clifford G. Darrow, David Agan, Steven Moody, Martin Higgens, E. Michael Shipulski
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Patent number: 9967964Abstract: In some aspects, electrodes can include a front portion shaped to matingly engage a nozzle of the plasma cutting system, the front portion having a first end comprising a plasma arc emitter disposed therein; and a rear portion thermally connected to a second end of the front portion, the rear portion shaped to slidingly engage with a complementary swirl ring of the plasma cutting system and including: an annular mating feature extending radially from a proximal end of the rear portion of the electrode to define a first annular width to interface with the swirl ring, the annular mating feature comprising a sealing member configured to form a dynamic seal with the swirl ring to inhibit a flow of a gas from a forward side of the annular mating feature to a rearward side of the annular mating feature.Type: GrantFiled: May 29, 2015Date of Patent: May 8, 2018Assignee: Hypertherm, Inc.Inventors: Sung Je Kim, Jesse A. Roberts, Shreyansh Patel
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Patent number: 9908195Abstract: A plasma cutting system is provided. The system includes a power source configured to generate a plasma arc, and a plasma arc torch connected to the power source for delivering the plasma arc to a workpiece. The plasma arc torch defines a multi-function fluid flow path for sustaining the plasma arc and cooling the plasma arc torch such that the plasma cutting system has a power-to-gas flow ratio of at least 2 kilowatts per cubic feet per minute (KW/cfm). The power-to-gas flow ratio comprises a ratio of power of the generated plasma arc to a total gas flow supplied to the plasma arc torch.Type: GrantFiled: January 30, 2015Date of Patent: March 6, 2018Assignee: Hypertherm, Inc.Inventors: Jesse A. Roberts, Shreyansh Patel, Stephen T. Eickhoff, Justin Gullotta, Qinghua Liu, Dennis M. Borowy, Zheng Duan, Ashok V. Retnaswamy, Sung Je Kim
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Publication number: 20180056430Abstract: In some aspects, methods for controlling a plasma arc in a plasma torch of a plasma cutting system in a low operating current mode can include: receiving, by a computing device within the plasma power supply, a command to begin a plasma processing operation; generating a pilot arc command to generate a pilot arc within the plasma torch, the generating of the pilot arc command including directing an electrical signal and a gas flow to the plasma torch, the electrical signal being configured to generate the pilot arc at a current having a first arc amperage magnitude; and generating an operational arc command to facilitate a transition from the pilot arc to an operational plasma arc, the generating of the operational arc command including adjusting the current directed to the plasma torch to be a second arc amperage magnitude that is lower than the first arc amperage magnitude.Type: ApplicationFiled: August 25, 2017Publication date: March 1, 2018Inventors: Shreyansh Patel, Qinghua Liu, Junsong Mao, Richard Pavlik, Zheng Duan, Bruce P. Altobelli
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Patent number: 9462670Abstract: A torch tip for a plasma arc torch includes a body having a first end, configured to attach to the torch, and a second end, where an end wall is disposed. A plasma exit orifice is formed in the end wall. At least two castellations are formed in the end wall. Each castellation has a castellation width defined by the distance between the sidewalls of that castellation. At least one slot is disposed between two castellations. Each slot has a slot width defined by a distance between the sidewalls of its adjacent castellations. The slot width can be at least twice the castellation width. Each slot also has a slot floor and an exterior shape. The slot floor can have slope that tapers toward the first end of the body in an outward radial direction and the exterior shape of the slot can have a generally V-shaped or U-shaped contour.Type: GrantFiled: August 25, 2014Date of Patent: October 4, 2016Assignee: Hypertherm, Inc.Inventors: Shreyansh Patel, Zheng Duan, Steven Moody, Nicholas Pecor
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Publication number: 20150351214Abstract: In some aspects, electrodes can include a front portion shaped to matingly engage a nozzle of the plasma cutting system, the front portion having a first end comprising a plasma arc emitter disposed therein; and a rear portion thermally connected to a second end of the front portion, the rear portion shaped to slidingly engage with a complementary swirl ring of the plasma cutting system and including: an annular mating feature extending radially from a proximal end of the rear portion of the electrode to define a first annular width to interface with the swirl ring, the annular mating feature comprising a sealing member configured to form a dynamic seal with the swirl ring to inhibit a flow of a gas from a forward side of the annular mating feature to a rearward side of the annular mating feature.Type: ApplicationFiled: May 29, 2015Publication date: December 3, 2015Inventors: Shreyansh Patel, Jesse A. Roberts, Sung Je Kim
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Publication number: 20150343554Abstract: A plasma cutting system is provided. The system includes a power source configured to generate a plasma arc, and a plasma arc torch connected to the power source for delivering the plasma arc to a workpiece. The plasma arc torch defines a multi-function fluid flow path for sustaining the plasma arc and cooling the plasma arc torch such that the plasma cutting system has a power-to-gas flow ratio of at least 2 kilowatts per cubic feet per minute (KW/cfm). The power-to-gas flow ratio comprises a ratio of power of the generated plasma arc to a total gas flow supplied to the plasma arc torch.Type: ApplicationFiled: January 30, 2015Publication date: December 3, 2015Inventors: Jesse A. Roberts, Shreyansh Patel, Stephen T. Eickhoff, Justin Gullotta, Qinghua Liu, Dennis M. Borowy, Zheng Duan, Ashok V. Retnaswamy, Sung Je Kim
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Publication number: 20150014285Abstract: A torch tip for a plasma arc torch includes a body having a first end, configured to attach to the torch, and a second end, where an end wall is disposed. A plasma exit orifice is formed in the end wall. At least two castellations are formed in the end wall. Each castellation has a castellation width defined by the distance between the sidewalls of that castellation. At least one slot is disposed between two castellations. Each slot has a slot width defined by a distance between the sidewalls of its adjacent castellations. The slot width can be at least twice the castellation width. Each slot also has a slot floor and an exterior shape. The slot floor can have slope that tapers toward the first end of the body in an outward radial direction and the exterior shape of the slot can have a generally V-shaped or U-shaped contour.Type: ApplicationFiled: August 25, 2014Publication date: January 15, 2015Inventors: Shreyansh Patel, Zheng Duan, Steven Moody, Nicholas Pecor