Patents by Inventor Jimmy Lin-Min Yeh

Jimmy Lin-Min Yeh 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).

  • Brushless direct current (BLDC) motor based linear or rotary actuator for helicopter rotor control
    Patent number: 8915710
    Abstract: A device for controlling the pitch of a helicopter's rotor blade, the device having a BLDC motor based actuator; and at least one control surface operatively connected to the BLDC motor based actuator. The actuator and the control surface are preferably fully integrated into the interior profile of the rotor blade and are capable of controlling the PFC of the helicopter and improving HHC during operation by reducing noise and vibration. The motor is preferably a high power density motor incorporating rare earth permanent magnets connected to a roller/ball screw or planetary gear set to provide the right combination of force/torque, stroke and frequency.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: December 23, 2014
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Zaffir Chaudhry, Brian E. Wake, Fanping Sun, Richard Jeremy Bedwell, Jimmy Lin-Min Yeh, Lee A. Hoffman
  • Self-lubricated actuator for on-blade rotor control
    Patent number: 7677868
    Abstract: A self-lubricated actuator for a rotor blade flap of a helicopter having a housing; a motor having a shaft disposed in a bearing is provided. The actuator further has an output rod and a mechanism operatively associated with the motor and the output rod to transmit movement from the motor to the output rod. The housing includes a lubrication medium capable of substantially immersing the bearing, the motor shaft and the mechanism during operation.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: March 16, 2010
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Zaffir Chaudhry, Andrew John Collins, Ulf J Jonsson, Fanping Sun, Brian E Wake, Michael G O'Callaghan, Jimmy Lin-Min Yeh
  • SELF-LUBRICATED ACTUATOR FOR ON-BLADE ROTOR CONTROL
    Publication number: 20080138203
    Abstract: A self-lubricated actuator for a rotor blade flap of a helicopter having a housing; a motor having a shaft disposed in a bearing is provided. The actuator further has an output rod and a mechanism operatively associated with the motor and the output rod to transmit movement from the motor to the output rod. The housing includes a lubrication medium capable of substantially immersing the bearing, the motor shaft and the mechanism during operation.
    Type: Application
    Filed: December 7, 2006
    Publication date: June 12, 2008
    Applicant: Sikorsky Aircraft Corporation
    Inventors: Andrew John Collins, Zaffir Chaudhry, Ulf J Jonsson, Fanping Sun, Brian E. Wake, Michael G. O'Callaghan, Jimmy Lin-Min Yeh
  • Brushless direct current (BLDC) motor based linear or rotary actuator for helicopter rotor control
    Publication number: 20080101931
    Abstract: A device for controlling the pitch of a helicopter's rotor blade, the device having a BLDC motor based actuator; and at least one control surface operatively connected to the BLDC motor based actuator. The actuator and the control surface are preferably fully integrated into the interior profile of the rotor blade and are capable of controlling the PFC of the helicopter and improving HHC during operation by reducing noise and vibration. The motor is preferably a high power density motor incorporating rare earth permanent magnets connected to a roller/ball screw or planetary gear set to provide the right combination of force/torque, stroke and frequency.
    Type: Application
    Filed: December 9, 2005
    Publication date: May 1, 2008
    Inventors: Zaffir Chaudhry, Brian E. Wake, Fanping Sun, Richard Jeremy Bedwell, Jimmy Lin-Min Yeh, Lee A. Hoffman