Patents by Inventor Mu-Hsien Huang

Mu-Hsien Huang 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).

  • Control device for soft starting and protecting overload of motor
    Patent number: 7518837
    Abstract: A control device for soft starting and protecting overload of a motor in a power tool is disclosed. The control device comprises a power switch, a varistor, several diodes, several resistors, several capacitors, a relay, a transistor, a triac, and a microcontroller. The microcontroller is embedded with program such that, after the power switch is turned on, the microcontroller generates a smooth soft start voltage to drive the power tool. With the characteristics of power-control device, the voltage sent to motor is increased from low to full range. When the speed of motor is increased from low to the maximum, the microcontroller turns off the power-control device and turns on a relay.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: April 14, 2009
    Assignee: Uan Chung Enterprises Co., Ltd
    Inventors: Tai-Yuan Tseng, Mu-Hsien Huang
  • CONTROL DEVICE FOR SOFT STARTING AND PROTECTING OVERLOAD OF MOTOR
    Publication number: 20080074811
    Abstract: A control device for soft starting and protecting overload of a motor in a power tool is disclosed. The control device comprises a power switch, a varistor, several diodes, several resistors, several capacitors, a relay, a transistor, a triac, and a microcontroller. The microcontroller is embedded with program such that, after the power switch is turned on, the microcontroller generates a smooth soft start voltage to drive the power tool. With the characteristics of power-control device, the voltage sent to motor is increased from low to full range. When the speed of motor is increased from low to the maximum, the microcontroller turns off the power-control device and turns on a relay.
    Type: Application
    Filed: September 21, 2006
    Publication date: March 27, 2008
    Inventors: Tai-Yuan Tseng, Mu-Hsien Huang