Patents by Inventor William L. Holz

William L. Holz 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: 4139593
    Abstract: A molding station having packer heads is positioned between a pair of stripping stations having ejectors and a mold box having first and second mold sections is movable between first and second positions with the ejectors at the one stripping station registering with the one mold section and the packer heads registering with the other mold section and at the second position the ejectors at the other stripping station registering with the other mold section and the packer heads registering with the first mold section. The completed molded product is ejected as the mold box is raised and the molded product is formed as the mold box is lowered. The mold box is raised and lowered between top and bottom table halves and when in the lowered position is movable between the first and second positions on rails having legs adapted to engage a stationary support when the lower table half is lowered a predetermined distance.
    Type: Grant
    Filed: August 5, 1977
    Date of Patent: February 13, 1979
    Assignee: Mid-Iowa Concrete Products Company
    Inventors: William L. Holz, Franklin C. Kinkade, Fred Robbins