Patents by Inventor Cheng-Hui Yu

Cheng-Hui Yu 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).

  • Paper pickup mechanism
    Patent number: 6857630
    Abstract: A paper pickup mechanism for automatically picking up a paper is provided.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: February 22, 2005
    Assignee: Lite-On Technology Corporation
    Inventor: Cheng-Hui Yu
  • Multi-function peripherals
    Publication number: 20040057071
    Abstract: A multi-function peripheral is able to process a plurality of functions such as printing, copying and scanning, and enables a power output device to selectively drive two different devices depending on required functions. The invention provides a switching mechanism, which can change delivery of power to the first device or the second device so that either the first device or the second device may be selected to process the desired function. The multi-function peripheral thus constructed does not need one dedicated power output device to match one working device and can reduce the number of power output devices required.
    Type: Application
    Filed: September 25, 2002
    Publication date: March 25, 2004
    Inventors: Yi-Liang Lin, Cheng-Hui Yu, Min Chao
  • Paper pickup mechanism
    Publication number: 20030178762
    Abstract: A paper pickup mechanism for automatically picking up a paper is provided.
    Type: Application
    Filed: November 14, 2002
    Publication date: September 25, 2003
    Applicant: Silitek Corporation
    Inventor: Cheng-Hui Yu
  • Sheet feeding apparatus
    Patent number: 6497405
    Abstract: A sheet feeding apparatus to be used in an automatic sheet feeder having a motor rotatable in a first direction and a second direction is disclosed.
    Type: Grant
    Filed: January 2, 2001
    Date of Patent: December 24, 2002
    Inventors: Cheng-Hui Yu, Yi-Liang Lin, Shu-Wei Hu, Chao-Hung Hsiao
  • Sheet feeding apparatus
    Publication number: 20020084573
    Abstract: A sheet feeding apparatus to be used in an automatic sheet feeder having a motor rotatable in a first direction and a second direction is disclosed.
    Type: Application
    Filed: January 2, 2001
    Publication date: July 4, 2002
    Inventors: Cheng-Hui Yu, Yi-Liang Lin, Shu-Wei Hu, Chao-Hung Hsiao
  • Paper-feeding apparatus
    Patent number: 5988627
    Abstract: Paper is fed through the printing process of a printing machine by an apparatus which includes a paper-feeding mechanism that is driven by a motor, a paper setting mechanism for handling the sheets of paper being printed, and a paper sensor for detecting whether a sheet is being printed and providing selective control of the motor.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: November 23, 1999
    Assignee: Umax Data Systems Inc.
    Inventors: Chin-I Lin, Wen-Tso Tseng, Cheng-Hui Yu