Patents by Inventor Johanna W. van Wingen born Looyen

Johanna W. van Wingen born Looyen 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).

  • Protector for front chain sprocket of a bicycle
    Patent number: 5320583
    Abstract: This invention is directed to a protector for a single or front chain sprocket of a bicycle. The sprocket assembly is mounted on a pedal shaft and is non-rotatably coupled with a sprocket-side pedal. The protector comprises a disc which is adapted to be fixed by a fixing mechanism with respect to the pedal shaft and having a diameter which is sufficient for preventing soiling or damaging clothing or body portions of the user of the bicycle.
    Type: Grant
    Filed: January 17, 1992
    Date of Patent: June 14, 1994
    Assignee: De Woerd B.V.
    Inventor: Johanna W. van Wingen born Looyen