Patents by Inventor Lun-Hai Yeh

Lun-Hai Yeh 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).

  • Ejection force adjustable stapler
    Patent number: 6367676
    Abstract: A stapler includes a casing having a grasp hole defined therethrough and a staple receiving frame is received in the casing. A staple pushing device is engaged with the frame and a groove is defined in a periphery of the grasp hole so that a pressing rod is movably engaged with the groove. Two resilient plates each have an end fixedly connected to the casing and the pressing rod presses on the resilient plates. A staple ejection device is connected to the casing and is connected to the resilient plates. A handle is pivotally connected to the casing and disengagably connected to the staple ejection device. An outer cover is mounted to the casing and a front cover is removably connected to the casing.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: April 9, 2002
    Inventors: Samuel Opland, Lun-Hai Yeh
  • Lever
    Patent number: D544777
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: June 19, 2007
    Inventor: Lun-Hai Yeh