Patents by Inventor Ken-Hua Chang

Ken-Hua Chang 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-feeding device and multi-functional printers having a paper separating element with paper inserting and separating portions
    Patent number: 8699040
    Abstract: A paper-feeding device and a multi-functional printer are provided. The paper-feeding device includes a base, a driving axle, a position-limiting element and a retaining element. The base has a first assembling portion. The driving axle, the position-limiting and the retaining elements are all in the base. The position-limiting element has a second assembling portion and two position-limiting portions on radial directions of the second assembling portion between the inserting portion and the body. The retaining element includes a swing frame, a paper-separating element and a spring. The body of the swing frame is located between the two position-limiting portions. The first and second pivoting portions coaxial and connect the body are pivoted respectively to the first and second assembling portions. The inserting portion of the paper-separating element is sheathed by the body and the separating element leans against the driving axle.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: April 15, 2014
    Assignees: Kinpo Electronics, Inc., Cal-Comp Electronics & Communications Company Limited
    Inventors: Shih-Jer Din, Ken-Hua Chang
  • PAPER-FEEDING DEVICE AND MULTI-FUNCTIONAL PRINTERS
    Publication number: 20120154839
    Abstract: A paper-feeding device and a multi-functional printer are provided. The paper-feeding device includes a base, a driving axle, a position-limiting element and a retaining element The base has a first assembling portion. The driving axle, the position-limiting and the retaining elements are all in the base. The position-limiting element has a second assembling portion and two position-limiting portions on radial directions of the second assembling portion between the inserting portion and the body. The retaining element includes a swing frame, a paper-separating element and a spring. The body of the swing frame is located between the two position-limiting portions. The first and second pivoting portions coaxial and connect the body are pivoted respectively to the first and second assembling portions. The inserting portion of the paper-separating element is sheathed by the body and the separating element leans against the driving axle.
    Type: Application
    Filed: October 26, 2011
    Publication date: June 21, 2012
    Applicants: Cal-Comp Electronics & Communications Company Limited, KINPO ELECTRONICS, INC.
    Inventors: Shih-Jer Din, Ken-Hua Chang