Patents by Inventor Werner Riha

Werner Riha 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).

  • Grinding machine for continuous roll grinding of gears
    Patent number: 5119594
    Abstract: A grinding machine for continuous roll grinding of gears having a workpiece (6) clamped on a bench (1) and a grinding worm (8), the rotary drives of which are connected by a play-free mechanical hypoid transmission. The grinding worm (8) is continuously dressed during a processing operation. The coordination of grinding worm coils and gear spaces is specially simple and clear and such a roll grinding machine is thereby suited to be automatically loaded.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: June 9, 1992
    Assignee: Zahnradfabrik Friedrichshafen AG
    Inventor: Werner Riha
  • Grinding disc
    Patent number: 4854087
    Abstract: A grinding disc having a supporting body (3) the disc's border (5) of which is coated with an abrasive such as cubic boron nitride. The abrasive-covered surface (6) is interrupted by cooling oil grooves (7). The grinding disc is surrounded by a covering hood (11) that forms, with the supporting body (3) a cavity for oil (8) and has on the disc's border an opening providing an access to a working area (12). In the supporting body (3) there are bores (9) that connect an oil supply system with the cooling oil grooves (7).
    Type: Grant
    Filed: February 19, 1988
    Date of Patent: August 8, 1989
    Assignee: Zahnradfabrik Friedrichshafen A.G.
    Inventor: Werner Riha