Patents by Inventor Lisa Nadeau

Lisa Nadeau 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).

  • Devices for gas cooling plasma arc torches and related systems and methods
    Patent number: 9144148
    Abstract: In some aspects, nozzles for a gas-cooled plasma torches can include a hollow generally cylindrical body having a first end and a second end that define a longitudinal axis, the second end of the body defining a nozzle exit orifice; a gas channel formed in the first end between an interior wall and an exterior wall of the cylindrical body, the gas channel directing a gas flow circumferentially about at least a portion of the body; an inlet passage formed substantially through a radial surface of the exterior wall and fluidly connected to the gas channel; and an outlet passage at least substantially aligned with the longitudinal axis and fluidly connected to the gas channel.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: September 22, 2015
    Assignee: Hypertherm, Inc.
    Inventors: Yu Zhang, Zheng Duan, Lisa Nadeau
  • Devices for Gas Cooling Plasma Arc Torches and Related Systems and Methods
    Publication number: 20150028000
    Abstract: In some aspects, nozzles for a gas-cooled plasma torches can include a hollow generally cylindrical body having a first end and a second end that define a longitudinal axis, the second end of the body defining a nozzle exit orifice; a gas channel formed in the first end between an interior wall and an exterior wall of the cylindrical body, the gas channel directing a gas flow circumferentially about at least a portion of the body; an inlet passage formed substantially through a radial surface of the exterior wall and fluidly connected to the gas channel; and an outlet passage at least substantially aligned with the longitudinal axis and fluidly connected to the gas channel.
    Type: Application
    Filed: November 26, 2013
    Publication date: January 29, 2015
    Inventors: Yu Zhang, Zheng Duan, Lisa Nadeau