Patents by Inventor Wen-Jso Tseng

Wen-Jso Tseng 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 apparatus
    Patent number: 5954327
    Abstract: Paper sheets are fed through a printing machine by a compact apparatus including a feeding mechanism having a paper-fetching gear set, a toothed bar meshed with the gear set, a motor driving the feeding mechanism, a paper tray, a support shaft axially coupled to the paper tray, a lifting member pivotally coupled to the shaft and an actuator for driving the lifting member to move either towards or away from the paper fetching gear set.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: September 21, 1999
    Assignee: Umax Data Systems Inc.
    Inventors: Chin-I Lin, Jung-Ting Hsia, Wen-Jso Tseng