Patents Assigned to Leifeld & Co.
  • Method of producing V-belt pulleys and spinning lathe for carrying out such method
    Patent number: 3962896
    Abstract: Spinning method for producing V-belt pulleys comprising the steps of preforming the grooves, decreasing the width of the grooves by compression and finally shaping the grooves. The spinning lathe comprises an eccentrically mounted and axially movable inner roller forming a back up roller for the shaping roller.
    Type: Grant
    Filed: November 19, 1974
    Date of Patent: June 15, 1976
    Assignee: Leifeld & Co.
    Inventor: Joachim H. Bichel