Patents by Inventor Bor-Zeng Bohr Jang

Bor-Zeng Bohr Jang 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: 5860902
    Abstract: An improved paint roller frame that permits switching between two paint rolling directions or between two tilted painting angles. The frame comprises a roller cage assembly, a shaft for receiving the roller cage assembly, and a handle for supporting the shaft. The handle or its extension pole comprises two substantially elongated members being releasably fastened with a fastening means. Each of the mating ends of these two handle members has an oblique end section to which the normal is inclined with respect to the longitudinal axis of the corresponding handle member at an angle of approximately 5 to 45 degrees. The roller handle or its extension pole may optionally have a second set of oblique sections, to which the normal is inclined with respect to the handle axis at an angle of approximately 5 to 45 degrees. The second set of oblique planes are inclined at an angle of approximately 45 to 90 degrees with respect to the first set.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: January 19, 1999
    Inventors: Bor-Zeng Bohr Jang, Don W. Parker