Patents by Inventor Rong-Hwang Horng

Rong-Hwang Horng 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).

  • Publication number: 20090220628
    Abstract: An apparatus and method for servomotors of an electric injection molding machine includes a motion controlling unit, two driving amplifying units, and two servomotors respectively connected to the driving amplifying units. The motion controlling unit includes two servomotor position controllers both for receiving a first position command, and the driving amplifying units are respectively connected to the servomotor position controllers for receiving a second and third position command. Two position detectors are respectively received in the two screw caps that are mounted to the servomotors for detecting absolute positions of the corresponding screw caps. The screw caps are respectively connected to inputs of the first and second servomotor position controllers to form two screw cap position feedback circuits.
    Type: Application
    Filed: June 3, 2008
    Publication date: September 3, 2009
    Applicant: FOXNUM TECHNOLOGY CO., LTD.
    Inventors: CHIN-HSIEN TING, RONG-HWANG HORNG, YAW-SHEN LAI, HSING-CHANG LIU