Patents by Inventor Willi Leweke

Willi Leweke 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).

  • Patent number: 4578971
    Abstract: In a machine for manufacturing spiral seam piping from strip metal, using a set of three forming rolls consisting of a large number of individual bending rollers, the bending rollers acting on the inside of the pipe being arranged on a roller carrier which is capable of adjustment, the roller carrier (22) is controlled and driven in order to tilt it laterally by the use of a parallelogram control arm system (23) with two control arms (25, 26) arranged in a first control circle plane (24a) and one control arm (27) arranged in a second control circle plane (24b), at least one control circle adjuster (28, 29) associated with a control circle plane (24a, 24b), a link rod (31) acting in the direction of the pipe centerline (30), a lifting device (33) pivoted at the end (32) of the roller carrier (22), and a height-adjustable mounting (34) with a joint plate (36) carried in a bearing in the central portion of the roller carrier (22), a double lever (37) and a lifting device (38).
    Type: Grant
    Filed: July 11, 1984
    Date of Patent: April 1, 1986
    Assignee: Hoesch Aktiengesellschaft
    Inventors: Willi Leweke, Dietmar Orth