Patents Assigned to Ernst Grob AB
  • Hollow wheel for a sun-and-planet toothed wheel gearing
    Patent number: 5580327
    Abstract: In a sun-and-planet toothed wheel gearing the width of the tooth spaces of the toothing of the hollow wheel is preferably made three times larger than at a common toothing with substantially the identical widths of the teeth and tooth spaces. Such a inventive toothing can be produced specifically simple and precise by means of non-cutting methods, preferably an impact rolling.
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: December 3, 1996
    Assignee: Ernst Grob AB
    Inventor: Marc Deriaz