Patents by Inventor Paul J. Rollmann

Paul J. Rollmann 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).

  • Publication number: 20210111542
    Abstract: An apparatus includes a plurality of semiconductor switches. A first bus interconnects first terminals of the semiconductor switches in a first chain and provides a first impedance between the first terminals of switches of the first chain. A second bus interconnects second terminals of the semiconductor switches in a second chain and provides a second impedance greater that the first impedance between the second terminals of the switches of the second chain. The apparatus may be implemented as a laminated bus assembly including respective overlapping conductor plates, wherein the second bus includes a plate having subregions defined by features, such as slots or grooves, that provide the second impedance.
    Type: Application
    Filed: October 11, 2019
    Publication date: April 15, 2021
    Inventors: Yakov Lvovich Familiant, Andrew A. Rockhill, Paul J. Rollmann
  • Patent number: 10741313
    Abstract: An apparatus includes a laminated bus bar assembly with first and second bus bars and an intervening insulator layer. A surge arrestor (e.g., a metal oxide varistor) has a body mounted on the bus bar assembly and first and second terminals on first and second opposite sides of the body. In some embodiments, the body may be at least partially disposed in an opening in the first bus bar and the second terminal may be conductively bonded to a surface of the second bus bar that faces the insulator layer. In some embodiments, the second terminal may include a conductive stud passing through an opening in the second bus bar. The apparatus may include a spring clamp attached to the first bus bar and contacting the first side of the body to retain the body.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: August 11, 2020
    Assignee: Eaton Intelligent Power Limited
    Inventors: Yakov L. Familiant, Paul J. Rollmann, Andrew A. Rockhill
  • Publication number: 20200251261
    Abstract: An apparatus includes a laminated bus bar assembly with first and second bus bars and an intervening insulator layer. A surge arrestor (e.g., a metal oxide varistor) has a body mounted on the bus bar assembly and first and second terminals on first and second opposite sides of the body. In some embodiments, the body may be at least partially disposed in an opening in the first bus bar and the second terminal may be conductively bonded to a surface of the second bus bar that faces the insulator layer. In some embodiments, the second terminal may include a conductive stud passing through an opening in the second bus bar. The apparatus may include a spring clamp attached to the first bus bar and contacting the first side of the body to retain the body.
    Type: Application
    Filed: February 6, 2019
    Publication date: August 6, 2020
    Inventors: Yakov L. Familiant, Paul J. Rollmann, Andrew A. Rockhill
  • Patent number: 10665413
    Abstract: A fusible disconnect switch devices includes dual sets of switch contacts to connect or disconnect a current path through an overcurrent protection fuse with reduced arcing severity. Faster acting and longer contact path switch mechanisms are described providing satisfactory switching of DC circuits without excessive electrical arcing in a reduced physical package size.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: May 26, 2020
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: John Joseph Shea, Hongbin Wang, Paul J. Rollmann, Matthew Rain Darr
  • Patent number: 10636607
    Abstract: A fused disconnect switch device includes a housing defining an interior volume, and a current path. An arc interruption assembly is located in the interior volume and includes a shell, and a conductor in electrical communication with the current path. At least one arc plate is located between the magnets and the conductor. The magnets cooperate to generate a magnetic field facilitating an interruption of a first arc between the conductor and the first side of the arc chamber and a second arc between the conductor and the second side of the arc chamber.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: April 28, 2020
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Xin Zhou, Peter John Theisen, Paul J. Rollmann, Matthew Rain Darr
  • Publication number: 20200091711
    Abstract: Systems, methods, and devices, for forming and using an arc flash mitigation switch are provided. In one exemplary embodiment, an arc flash mitigation switch includes a cylindrical shell having a first end cap and a second end cap located at either end of the cylindrical shell. A first and second conductive feed through extend through the first and second end cap, respectively, at one end, and at the other connect to a first and second electrode separated by a gap. The exemplary arc flash mitigation switch further includes a trigger feed through that receives a trigger current that commutates the external arc flash event into the arc flash mitigation switch, quenching the external hazard.
    Type: Application
    Filed: November 25, 2019
    Publication date: March 19, 2020
    Applicant: EATON INTELLIGENT POWER LIMITED
    Inventors: JOHN JOSEPH SHEA, PAUL J. ROLLMANN, DAN E. HRNCIR, JASON B. CARRODUS
  • Publication number: 20200035429
    Abstract: A medium or low voltage circuit interrupter includes a housing with a first end cap, a second end cap that comprises a radial bellows, and one or more insulating sidewalls that extends from the first end cap to the second end cap. The end caps and one or more sidewalls provide a vacuum chamber. A fixed contact that extends through an opening of the first end cap and into the vacuum chamber. A moveable contact that extends through an opening of the second end cap and into the vacuum chamber. Multiple such interrupters may be electrically connected in series, positioned a single plane, and actuated by a single actuator.
    Type: Application
    Filed: July 27, 2018
    Publication date: January 30, 2020
    Inventors: Li Yu, Mark A. Juds, Paul J. Rollmann, Andrew A. Rockhill, Hongbin Wang
  • Patent number: 10541094
    Abstract: A medium or low voltage circuit interrupter includes a housing with a first end cap, a second end cap that comprises a radial bellows, and one or more insulating sidewalls that extends from the first end cap to the second end cap. The end caps and one or more sidewalls provide a vacuum chamber. A fixed contact that extends through an opening of the first end cap and into the vacuum chamber. A moveable contact that extends through an opening of the second end cap and into the vacuum chamber. Multiple such interrupters may be electrically connected in series, positioned a single plane, and actuated by a single actuator.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: January 21, 2020
    Assignee: Eaton Intelligent Power Limited
    Inventors: Li Yu, Mark A. Juds, Paul J. Rollmann, Andrew A. Rockhill, Hongbin Wang
  • Patent number: 10523000
    Abstract: Systems, methods, and devices, for forming and using an arc flash mitigation switch are provided. In one exemplary embodiment, an arc flash mitigation switch includes a cylindrical shell having a first end cap and a second end cap located at either end of the cylindrical shell. A first and second conductive feed through extend through the first and second end cap, respectively, at one end, and at the other connect to a first and second electrode separated by a gap. The exemplary arc flash mitigation switch further includes a trigger feed through that receives a trigger current that commutates the external arc flash event into the arc flash mitigation switch, quenching the external hazard.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: December 31, 2019
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: John Joseph Shea, Paul J. Rollmann, Dan E. Hrncir, Jason B. Carrodus
  • Publication number: 20190311873
    Abstract: A fusible disconnect switch devices includes dual sets of switch contacts to connect or disconnect a current path through an overcurrent protection fuse with reduced arcing severity. Faster acting and longer contact path switch mechanisms are described providing satisfactory switching of DC circuits without excessive electrical arcing in a reduced physical package size.
    Type: Application
    Filed: October 31, 2017
    Publication date: October 10, 2019
    Inventors: John Joseph Shea, Hongbin Wang, Paul J. Rollmann, Matthew Rain Darr
  • Publication number: 20190198278
    Abstract: A fused disconnect switch device includes a housing defining an interior volume, and a current path. An arc interruption assembly is located in the interior volume and includes a shell, and a conductor in electrical communication with the current path. At least one arc plate is located between the magnets and the conductor. The magnets cooperate to generate a magnetic field facilitating an interruption of a first arc between the conductor and the first side of the arc chamber and a second arc between the conductor and the second side of the arc chamber.
    Type: Application
    Filed: December 27, 2017
    Publication date: June 27, 2019
    Inventors: Xin Zhou, Peter John Theisen, Paul J. Rollmann, Matthew Rain Darr
  • Publication number: 20180308653
    Abstract: A fusible disconnect switch devices includes dual sets of switch contacts to connect or disconnect a current path through an overcurrent protection fuse with reduced arcing severity. Faster acting and longer contact path switch mechanisms are described providing satisfactory switching of DC circuits without excessive electrical arcing in a reduced physical package size.
    Type: Application
    Filed: October 31, 2017
    Publication date: October 25, 2018
    Inventors: John Joseph Shea, Hongbin Wang, Paul J. Rollmann, Matthew Rain Darr
  • Patent number: 9842719
    Abstract: A fusible disconnect switch devices includes dual sets of switch contacts to connect or disconnect a current path through an overcurrent protection fuse with reduced arcing severity. Faster acting and longer contact path switch mechanisms are described providing satisfactory switching of DC circuits without excessive electrical arcing in a reduced physical package size.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: December 12, 2017
    Assignee: COOPER TECHNOLOGIES COMPANY
    Inventors: John Joseph Shea, Hongbin Wang, Paul J. Rollmann, Matthew Rain Darr
  • Publication number: 20170229274
    Abstract: A fusible disconnect switch devices includes dual sets of switch contacts to connect or disconnect a current path through an overcurrent protection fuse with reduced arcing severity. Faster acting and longer contact path switch mechanisms are described providing satisfactory switching of DC circuits without excessive electrical arcing in a reduced physical package size.
    Type: Application
    Filed: February 4, 2016
    Publication date: August 10, 2017
    Inventors: John Joseph Shea, Hongbin Wang, Paul J. Rollmann, Matthew Rain Darr
  • Patent number: 9698571
    Abstract: An improved triggered arc flash arrester includes a shield apparatus disposed within an interior of an evacuated envelope and includes a first shield element and a second shield element. A plurality of conductors are partially disposed within the interior and are separated from one another by a gap. A first element of the shield apparatus is situated adjacent the envelope and is structured to protect the envelope from damage due to the high temperature plasma that results from an arc across the gap. A second element of the shield apparatus is interposed between the gap and at least a portion of the first element and is structured to protect the at least portion of the first element from damage due to an arc across the gap.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: July 4, 2017
    Assignee: EATON CORPORATION
    Inventors: John Joseph Shea, Ganesh K. Balasubramanian, Paul J. Rollmann, Robert Kirkland Smith
  • Publication number: 20160285259
    Abstract: Systems, methods, and devices, for forming and using an arc flash mitigation switch are provided. In one exemplary embodiment, an arc flash mitigation switch includes a cylindrical shell having a first end cap and a second end cap located at either end of the cylindrical shell. A first and second conductive feed through extend through the first and second end cap, respectively, at one end, and at the other connect to a first and second electrode separated by a gap. The exemplary arc flash mitigation switch further includes a trigger feed through that receives a trigger current that commutates the external arc flash event into the arc flash mitigation switch, quenching the external hazard.
    Type: Application
    Filed: March 23, 2016
    Publication date: September 29, 2016
    Applicant: EATON CORPORATION
    Inventors: JOHN JOSEPH SHEA, PAUL J. ROLLMANN, DAN E. HRNCIR, JASON B. CARRODUS
  • Publication number: 20150236480
    Abstract: An improved triggered arc flash arrester includes a shield apparatus disposed within an interior of an evacuated envelope and includes a first shield element and a second shield element. A plurality of conductors are partially disposed within the interior and are separated from one another by a gap. A first element of the shield apparatus is situated adjacent the envelope and is structured to protect the envelope from damage due to the high temperature plasma that results from an arc across the gap. A second element of the shield apparatus is interposed between the gap and at least a portion of the first element and is structured to protect the at least portion of the first element from damage due to an arc across the gap.
    Type: Application
    Filed: May 4, 2015
    Publication date: August 20, 2015
    Inventors: JOHN JOSEPH SHEA, GANESH K. BALASUBRAMANIAN, PAUL J. ROLLMANN, ROBERT KIRKLAND SMITH
  • Patent number: 9025299
    Abstract: An improved triggered arc flash arrester includes a shield apparatus disposed within an interior of an evacuated envelope and includes a first shield element and a second shield element. A plurality of conductors are partially disposed within the interior and are separated from one another by a gap. A first element of the shield apparatus is situated adjacent the envelope and is structured to protect the envelope from damage due to the high temperature plasma that results from an arc across the gap. A second element of the shield apparatus is interposed between the gap and at least a portion of the first element and is structured to protect the at least portion of the first element from damage due to an arc across the gap.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: May 5, 2015
    Assignee: Eaton Corporation
    Inventors: John Joseph Shea, Ganesh K. Balasubramanian, Paul J. Rollmann, Robert Kirkland Smith
  • Publication number: 20140307350
    Abstract: An improved triggered arc flash arrester includes a shield apparatus disposed within an interior of an evacuated envelope and includes a first shield element and a second shield element. A plurality of conductors are partially disposed within the interior and are separated from one another by a gap. A first element of the shield apparatus is situated adjacent the envelope and is structured to protect the envelope from damage due to the high temperature plasma that results from an arc across the gap. A second element of the shield apparatus is interposed between the gap and at least a portion of the first element and is structured to protect the at least portion of the first element from damage due to an arc across the gap.
    Type: Application
    Filed: April 11, 2013
    Publication date: October 16, 2014
    Applicant: EATON CORPORATION
    Inventors: John Joseph Shea, Ganesh K. Balasubramanian, Paul J. Rollmann, Robert Kirkland Smith
  • Patent number: 8847096
    Abstract: A direct current arc chute includes a ferromagnetic base having first and second ends; first and second ferromagnetic side members disposed from the respective first and second ends; a third ferromagnetic member disposed from the base intermediate the side members and having an end portion opposite the base; and first and second magnets on the respective first and second members have a magnetic polarity facing the third member. A first arc chamber is between the first and third members; and a second arc chamber is between the second and third members. The first magnet and first member extend away from the first end and beyond the end portion, and toward the second magnet and second member after the end portion. The second magnet and second member extend away from the second end and beyond the end portion, and toward the first magnet and first member after the end portion.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: September 30, 2014
    Assignee: Eaton Corporation
    Inventors: Mark A. Juds, Xin Zhou, Amogh V. Kank, Paul J. Rollmann, Robert W. Mueller, Michael F. Bartonek