Patents by Inventor Victor V. Chao

Victor V. Chao 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: 6360396
    Abstract: A tractor pavement-scrubbing implement having a rotating transverse cylindrical short-bristle brush attachable to a 3-point tractor hitch such that the brush may be lifted off the pavement surface or may be lowered against the pavement surface by the hydraulically-actuated 3-point hitch. The implement rides on wheels on each side of the transverse implement with the brush mounted forward of the wheels. Thus, when the hitch is lowered or lifted by the tractor 3-point hitch, the implement pivots on its rearward wheels. The implement comprises a first rotatable cylindrical brush mounted transverse in the implement adapted to rotate counterclockwise opposite the direction of travel for increased scrubbing action. Optionally, a second cylindrical brush parallel and axially offset from the first is included, rotating counter to rotation of the first brush clockwise to provide opposite scrubbing action complementary to the first brush. The brush or brushes are driven by a tractor power take-off drive.
    Type: Grant
    Filed: January 26, 1999
    Date of Patent: March 26, 2002
    Inventor: Victor V. Chao