Patents by Inventor Stephan Gerard

Stephan Gerard 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).

  • Pre-stressed ball bearing and method and tool for its manufacture
    Patent number: 4718781
    Abstract: The invention concerns ball bearings which automatically take up play, are self-centering and self-adaptable to the stress. The bearing comprises an inner ring (1), an outer ring in two parts (2a, 2b), balls (3), an elastically yieldable element (4) and a case (5). One of the rings is formed of two parts (2a, 2b) which are relatively movably fitted together and some of the four rolling raceways along which the balls roll have set-back depressions arranged along their circumference. Application in particular in the automobile industry.
    Type: Grant
    Filed: February 3, 1987
    Date of Patent: January 12, 1988
    Assignee: Nadella
    Inventor: Stephan Gerard