Patents Assigned to TRW Deutschi and GmbH
  • Patent number: 6006713
    Abstract: A hollow valve for internal combustion engines, comprising a valve body having a disk, a hollow throat region and a stem component, wherein the valve body is designed in the form a deep-drawn metal part made of austenitic metal. There is a stem end piece welded to the stem component of the valve body and a cover welded to the disk. The valve body, end piece and cover enclose a hollow space extending from the stem end piece into the disk. This valve is considerably lighter in weight than traditional valves, and is capable of lowering the temperature of the valve when the hollow space is filled with a coolant.
    Type: Grant
    Filed: August 19, 1998
    Date of Patent: December 28, 1999
    Assignee: TRW Deutschi and GmbH
    Inventor: Klaus Gebauer