Patents by Inventor Herman Thuswaldner

Herman Thuswaldner 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).

  • Method for roll forming and machine and blank for this
    Patent number: 6135343
    Abstract: Method for the fabrication of cones of sheet material where the blank includes two curved edges that are circular and have the radius R and r respectively and a common center C. The blank further has two straight lateral edges which are angled in relation to the circular edges. An angle .alpha. between the radius, through a corner and a first straight edge is as great as an angle .beta. between the radius through a second straight edge. A frustum of a cone is obtained from the blank after rolling the cone such that the lateral edges have been united to make a joint that runs helically around the cone.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: October 24, 2000
    Assignee: AB Ribea Engineering
    Inventors: Jan Thorngren, Herman Thuswaldner