Patents by Inventor Ricardo OKAI

Ricardo OKAI 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).

  • Slip-ring arrangement for a rotating electrical machine
    Patent number: 8872406
    Abstract: A slip-ring arrangement of a rotating electrical machine includes a plurality of slip-rings disposed concentrically about an axis of the electrical machine one behind the other in an axial direction, the plurality of slip-rings configured to be self-supporting.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: October 28, 2014
    Assignee: Alstom Renewable Technologies
    Inventors: Alexander Schwery, Naoki Ricardo Okai, Stefan Baumeister
  • Rotating electric machine with rotor including bolts
    Patent number: 8829759
    Abstract: A rotating electrical machine includes a rotor configured to rotate about an axis. The rotor includes a rotor lamination stack having a plurality of sheets pressed into a composite assembly in an axial direction and being radially divided into an inner mechanical part and an outer electrical part. A rotor winding is disposed in the electrical part of the rotor lamination stack. A stator is concentrically surrounding the rotor. A plurality of shear bolts is disposed in the mechanical part and configured to reach through the rotor lamination stack. A plurality of further bolts is disposed in the electrical part, the plurality of shear bolts and a plurality of further bolts being configured to press the plurality of sheets in the axial direction.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: September 9, 2014
    Assignee: Alstom Renewable Technologies
    Inventors: Alexander Schwery, Serdar Cifyildiz, Hanspeter Walser, Ricardo Okai
  • Rotating electric machine with interlocking inner and outer press plates
    Patent number: 8569923
    Abstract: A rotating electric machine includes a rotor configured to rotate about an axis. The rotor includes a rotor laminate stack having layered laminations pressed in an axial direction to form a composite, the rotor laminate stack being radially divided into an inner mechanical region and an outer electrical region. A rotor winding is disposed in the electrical region of the rotor laminate stack. A stator concentrically surrounds the rotor. A press plate is configured to press the layered laminations in the axial direction, the press plate being radially divided into a separate inner press plate and a separate outer press plate so as to correspond to the radial division of the rotor laminate stack.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: October 29, 2013
    Assignee: Alstom Renewable Technologies
    Inventors: Alexander Schwery, Serdar Cifyildiz, Hanspeter Walser, Ricardo Okai
  • SLIP-RING ARRANGEMENT FOR A ROTATING ELECTRICAL MACHINE
    Publication number: 20120200194
    Abstract: A slip-ring arrangement of a rotating electrical machine includes a plurality of slip-rings disposed concentrically about an axis of the electrical machine one behind the other in an axial direction, the plurality of slip-rings configured to be self-supporting.
    Type: Application
    Filed: February 13, 2012
    Publication date: August 9, 2012
    Applicant: ALSTOM HYDRO FRANCE
    Inventors: Alexander Schwery, Naoki Ricardo Okai, Stefan Baumeister
  • ROTATING ELECTRIC MACHINE
    Publication number: 20120112601
    Abstract: A rotating electrical machine includes a rotor configured to rotate about an axis. The rotor includes a rotor lamination stack having a plurality of sheets pressed into a composite assembly in an axial direction and being radially divided into an inner mechanical part and an outer electrical part. A rotor winding is disposed in the electrical part of the rotor lamination stack. A stator is concentrically surrounding the rotor. A plurality of shear bolts is disposed in the mechanical part and configured to reach through the rotor lamination stack. A plurality of further bolts is disposed in the electrical part, the plurality of shear bolts and a plurality of further bolts being configured to press the plurality of sheets in the axial direction.
    Type: Application
    Filed: October 19, 2011
    Publication date: May 10, 2012
    Applicant: ALSTOM HYDRO FRANCE
    Inventors: Alexander SCHWERY, Serdar CIFYILDIZ, Hanspeter WALSER, Ricardo OKAI
  • ROTATING ELECTRIC MACHINE
    Publication number: 20120104896
    Abstract: A rotating electric machine includes a rotor configured to rotate about an axis. The rotor includes a rotor laminate stack having layered laminations pressed in an axial direction to form a composite, the rotor laminate stack being radially divided into an inner mechanical region and an outer electrical region. A rotor winding is disposed in the electrical region of the rotor laminate stack. A stator concentrically surrounds the rotor. A press plate is configured to press the layered laminations in the axial direction, the press plate being radially divided into a separate inner press plate and a separate outer press plate so as to correspond to the radial division of the rotor laminate stack.
    Type: Application
    Filed: October 18, 2011
    Publication date: May 3, 2012
    Applicant: ALSTOM HYDRO FRANCE
    Inventors: Alexander SCHWERY, Serdar CIFYILDIZ, Hanspeter WALSER, Ricardo OKAI