Patents by Inventor Ziad Mohamed

Ziad Mohamed 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).

  • Patent number: 10240581
    Abstract: The present disclosure is directed to a method for controlling a pitch angle of a rotor blade of a wind turbine. The method includes adjusting, with an actuator, the pitch angle of the rotor blade during a start-up sequence of the wind turbine. The actuator adjusts the pitch angle of the rotor blade by rotating the rotor blade about a pitch axis relative to a hub. The method also includes determining, with a controller, a minimum pitch angle threshold of the rotor blade based on a tip speed ratio of the rotor blade. The method further includes comparing, with the controller, a current pitch angle of the rotor blade to the minimum pitch angle threshold. When the pitch angle meets the minimum pitch angle threshold, the method includes preventing, with the actuator, the pitch angle of the rotor blade from exceeding the minimum pitch angle threshold.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: March 26, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Sheng Jia Zheng, Mathew Doyle Angel, Ziad Mohamed Amin, Mahdi Hallak
  • Publication number: 20180223803
    Abstract: The present disclosure is directed to a method for controlling a pitch angle of a rotor blade of a wind turbine. The method includes adjusting, with an actuator, the pitch angle of the rotor blade during a start-up sequence of the wind turbine. The actuator adjusts the pitch angle of the rotor blade by rotating the rotor blade about a pitch axis relative to a hub. The method also includes determining, with a controller, a minimum pitch angle threshold of the rotor blade based on a tip speed ratio of the rotor blade. The method further includes comparing, with the controller, a current pitch angle of the rotor blade to the minimum pitch angle threshold. When the pitch angle meets the minimum pitch angle threshold, the method includes preventing, with the actuator, the pitch angle of the rotor blade from exceeding the minimum pitch angle threshold.
    Type: Application
    Filed: February 8, 2017
    Publication date: August 9, 2018
    Inventors: Sheng Jia Zheng, Mathew Doyle Angel, Ziad Mohamed Amin, Mahdi Hallak
  • Patent number: 8152820
    Abstract: A coaxial tube assembly, a bag, a bag-translating assembly, a de-bulking tool, and a drive assembly. The bag is delivered into a cavity in a patient's body either manually for open surgery or through the coaxial tube assembly by operation of the drive assembly for minimally invasive surgery. After a mass of tissue is placed in the bag, which is now secured to the bag-translating assembly, the drive assembly is operated to activate the bag-translation assembly to retract the bag into the annular space of the coaxial tube assembly. As the bag is being retracted, the mass in the bag is pulled into engagement with the de-bulking tool, which extends through the lumen of the coaxial tube assembly. The drive assembly activates the de-bulking tool to morcellate the mass in the bag and convey the morcellated bits of the mass through the lumen of the coaxial tube assembly.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: April 10, 2012
    Assignee: Dai-Z, LLC
    Inventors: Ziad Mohamed, Timothy D. McDonald
  • Publication number: 20090326546
    Abstract: A coaxial tube assembly, a bag, a bag-translating assembly, a de-bulking tool, and a drive assembly. The bag is delivered into a cavity in a patient's body either manually for open surgery or through the coaxial tube assembly by operation of the drive assembly for minimally invasive surgery. After a mass of tissue is placed in the bag, which is now secured to the bag-translating assembly, the drive assembly is operated to activate the bag-translation assembly to retract the bag into the annular space of the coaxial tube assembly. As the bag is being retracted, the mass in the bag is pulled into engagement with the de-bulking tool, which extends through the lumen of the coaxial tube assembly. The drive assembly activates the de-bulking tool to morcellate the mass in the bag and convey the morcellated bits of the mass through the lumen of the coaxial tube assembly.
    Type: Application
    Filed: June 26, 2008
    Publication date: December 31, 2009
    Inventors: Ziad Mohamed, Timothy D. McDonald