Patents by Inventor Oswald Tschudin

Oswald Tschudin 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).

  • Mechanism for converting unidirectional rotative movement into alternating bidirectional rotative movement
    Patent number: 4781072
    Abstract: A drive shaft continuously rotating in a single direction operates to drive a driven shaft with alternating bidirectional rotative movement through a gear transmission which includes a first gear mounted on the drive shaft and second and third gears mounted on the driven shaft, with the first gear having teeth on only a portion thereof, the teeth alternately engaging the second and third gears as the drive shaft rotates. The gear teeth on the first, second and third gears have a tooth pitch t.sub.0 and the teeth on the second and third gears are offset relative to each other by an arc length measured along the pitch circle of the gear which is not grater than one-fourth of the tooth pitch t.sub.0.
    Type: Grant
    Filed: May 26, 1983
    Date of Patent: November 1, 1988
    Assignee: Institut Straumann AG
    Inventor: Oswald Tschudin