Patents by Inventor Ernst Wenger

Ernst Wenger 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).

  • Multipurpose tool
    Patent number: 5501209
    Abstract: A working tool has a large number of cutter rings (2.1 to 2.3) on a curved guide rod (1) of circular cross section. The guide yoke (1) exhibits at least two helical grooves winding in opposite directions along its outer side, the cutter rings engaging into these grooves in each case with at least one guide element. Consecutive cutter rings (2.1, 2.2) engage with their guide elements in each case into contrarotating grooves.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: March 26, 1996
    Assignees: Reserwa AG., Vitesse Etablissement
    Inventor: Ernst Wenger
  • Multipurpose tool
    Patent number: 5365914
    Abstract: A working tool has a large number of cutter rings (2.1 to 2.3) on a curved guide rod (1) of circular cross section. The guide yoke (1) exhibits at least two helical grooves winding in opposite directions along its outer side, the cutter rings engaging into these grooves in each case with at least one guide element. Consecutive cutter rings (2.1, 2.2) engage with their guide elements in each case into contrarotating grooves. When the rings are driven forward during operation of the tool, consecutive cutter rings will rotate in opposite directions on account of the helical grooves (8, 9).
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: November 22, 1994
    Assignees: Reserwa AG, Vitesse Etablissement
    Inventor: Ernst Wenger