Patents by Inventor Stuart Charles Walker

Stuart Charles Walker 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).

  • Shopping trolley, a castor for a shopping trolley and a kit of parts for fitting to such a castor
    Patent number: 5943735
    Abstract: A steering assistance device for a castor comprises a cam portion (39) having a lobe (41) which is fixed to the bottom of the fixing bolt of the castor and which is surrounded by a closed portion (43) of a capture device (42). The lobe (41) is engaged in an arcuate recess (49) of the capture device (42) in the dead center position of the castor. The capture device (42) is formed of a plastics material and its sides and ends are resilient slats. The arcuate recess (49) is in one end and the two sides (50 and 52) carry inwardly projecting arms (51 and 53).
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: August 31, 1999
    Assignee: Flexello Limited
    Inventors: Phillip Stuart Walker, Doris Jessie Walker, Stuart Charles Walker