Patents by Inventor Rudy V. Whitfield

Rudy V. Whitfield 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: 5275567
    Abstract: Toy blocks and sets of toy blocks containing Braille characters for teaching young, sight-impaired children. A typical wooden block is cubical, comprising a pair of opposite, spaced apart display sides having recessed surfaces. One recessed surface contains a raised Braille character, and the opposite side displays the corresponding alphabetic or numerical character or characters. The recessed sides have borders comprising a bottom tactile-sensing portion that includes a plurality of raised nubs adapted to be touched for orienting the characters properly. Smaller Braille characters are preferably disposed beneath each alphabetic character.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: January 4, 1994
    Inventor: Rudy V. Whitfield