Patents by Inventor Dietmar Zaiser

Dietmar Zaiser 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).

  • Constructed piston or piston consisting of components that are welded or soldered together
    Patent number: 6467397
    Abstract: A constructed piston 1 is comprised of an upper part 2 produced from forged steel, and a bottom part 3, said parts being joined with the expansion screws 4. The bottom part 3 consists of a forged part 6 produced from steel, with the bosses 7 and an approximately tubular shaft extension 5 consisting of an iron material, said extension being joined with the part 6 by welding. In the lower zone of the shaft extension 5, the latter has a collar 8 that can be worked for the purpose of adjusting a piston weight within the tolerance range.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: October 22, 2002
    Assignee: Mahle GmbH
    Inventors: Reinhold Fuchs, Dietmar Zaiser