Patents by Inventor Rene Risi

Rene Risi 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).

  • Timepiece calendar mechanism
    Patent number: 4048795
    Abstract: A timepiece calendar mechanism which includes a monthly date ring having a circular set of internal teeth and a day-of-the-week disc disposed within the interior space of the date ring and concentric therewith, the day disc having a circular set of external gear teeth. Pivotally mounted between the two sets of gear teeth is a twin jumper having oppositely-directed arms whose free ends are provided with detents which respectively engage the sets of teeth.
    Type: Grant
    Filed: November 4, 1975
    Date of Patent: September 20, 1977
    Assignee: Bulova Watch Company, Inc.
    Inventor: Rene Risi