Patents by Inventor Sam Foo Liou

Sam Foo Liou 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).

  • Patent number: 5857795
    Abstract: A paint roller device including a holder frame with a handle, a paint container, a paint feeding roller, a paint distribution roller, and a painting roller, wherein the paint container has two hangers respectively hung on two round rods of the holder frame and turned with the paint container within a limited angle confined between locating pins on the holder frame; torsional springs are coupled between the painting roller and the holder frame to force the painting roller apart from the paint distribution roller; the painting roller has a felt cover layer on a foam cover thereof, the felt cover layer bilaterally projecting over two opposite sides of the holder frame for painting corner area on the workpiece.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: January 12, 1999
    Inventor: Sam Foo Liou
  • Patent number: 5702525
    Abstract: An improved paint roller device includes a semi-enclosed trough for holding paint, a paint roller disposed in the trough, a uniform roller above the paint roller and in contact therewith, a roller next to the uniform roller and in contact therewith, and a substantially U-shaped frame joining these rollers to the trough. The paint is transferred by the paint roller in the trough to the uniform roller before it is transferred to the roller. The paint is uniformly distributed so that an evenly painted surface may be achieved. Paint dripping and scraping may be eliminated.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: December 30, 1997
    Inventor: Sam Foo Liou