Patents by Inventor Rolf Luthi

Rolf Luthi 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).

  • Process for the isothermal forging of a work piece
    Patent number: 4228670
    Abstract: A process for the lubrication of a tool surface which comprises high pressure blast spraying a powder lubricant having a particle size of 0.6 to 1.5 .mu. at a spray pressure of 4 to 5 bar, onto the tool surface thereby producing a high temperature compacted coherent lubricant film on the surface while simultaneously smoothing, strengthening and compressively stressing the tool surface.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: October 21, 1980
    Assignee: BBC Brown, Boveri & Company, Limited
    Inventors: Christopher W. Corti, Rolf Luthi, Ernst Vogt