Patents by Inventor Si L. Yu

Si L. 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).

  • Structure of vibro separator
    Patent number: 5108588
    Abstract: A vibro separator, comprising a separator unit which is comprised of a screen assembly releasably mounted on a hopper at the top, which screen assembly has a screen releasably fastened therein; a vibrator unit which is comprised of a motor directly or indirectly attached to the hopper at the bottom for driving two eccentric weights to rotate via a revolving shaft; and a base which has springs for flexibly supporting the vibrator unit and the separator unit.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: April 28, 1992
    Inventor: Si L. Yu