Patents by Inventor William Keith Robinson

William Keith Robinson 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).

  • ADJUSTABLE HEAD ANGLE BICYCLES
    Publication number: 20240092449
    Abstract: An adjustable head angle bicycle assembly includes a steerer tube; a head tube that includes a first annular surface protruding radially inward from an inner wall at the upper end, and a second annular surface protruding radially inward from the inner wall at the lower end; an upper cup that includes a third annular surface engaged with the first annular surface of the head tube; and a lower cup that includes a fourth annular surface engaged with the second annular surface of the head tube.
    Type: Application
    Filed: September 5, 2023
    Publication date: March 21, 2024
    Inventors: Brian Daniel Robinson, Jeffrey Keith Bowers, William Te-Chung Chan
  • Filter mask
    Patent number: 3985132
    Abstract: An improved filter mask having a laterally pleated filter medium and a stiffening member parallel to and in the vicinity of the pleats. Lateral opening of the pleats causes the stiffening members to bow outwardly and support the filter medium away from the nose and mouth of the wearer thereby providing greater filtering efficiency and wearer comfort.
    Type: Grant
    Filed: December 13, 1974
    Date of Patent: October 12, 1976
    Assignee: Tape-Licator, Inc.
    Inventors: Elvin L. Boyce, William Keith Robinson