Patents by Inventor Wilhelm H. Schroth

Wilhelm H. Schroth 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 and apparatus for producing multiple groove V-belt pulleys
    Patent number: 4173136
    Abstract: A multiple groove pulley is formed from a cup-shaped blank by an apparatus and method in which axially displaceable segmental shaping rings are positioned at axially predetermined positions along the wall of the blank. Fluid pressure communicated to the interior of the blank expands the wall of the blank into contact with the shaping rings and at least one of the shaping rings is independently movable in an axial direction while the blank is compressed for simultaneous formation of the grooves. A sleeve member is movable axially over at least one of the shaping rings to resist radial movement of the segments while at the same time permitting full compression of the blank.
    Type: Grant
    Filed: November 17, 1977
    Date of Patent: November 6, 1979
    Inventor: Wilhelm H. Schroth