Patents by Inventor Udo Rieser

Udo Rieser 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).

  • Rollable knife sharpener
    Patent number: 4672778
    Abstract: Knife sharpener rollable on a support and having two substantially coaxially disposed equally sized rollers (2,4) pressed resiliently against each other. The rollers have on their facing sides externally conical intermeshing toothed rings (32) which consist at least at their facing faces (38) of a durable grinding material. The knife blade to be sharpened is introduced between the two toothed rings, the latter being pressed apart in the respective region. The grinding action is effected by the relative movement of the end faces of the toothed rings with respect to the blade drawn or pushed through, while the knife sharpener rolls on the support.
    Type: Grant
    Filed: March 6, 1986
    Date of Patent: June 16, 1987
    Inventor: Udo Rieser
  • Handle for a sharpening rod
    Patent number: D331692
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: December 15, 1992
    Assignee: J. A. Henckels Zwillingswerk AG
    Inventor: Udo Rieser