Patents by Inventor David William Pfeffer

David William Pfeffer 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).

  • Publication number: 20150315784
    Abstract: A multi-use component of a masonry wall (CMU) that works in place of, or with, standard 6?, 8?, 10?, 12? wideƗ16?long block which allows for increased daily production. The composite block includes a pair of opposed and parallel masonry faceshell transversed with 3 webs creating two equal cells and two half cells, (FIG. 2) Cell alignment matches existing standard CMU configurations. The face shell and truss-web members have configured elements that integrate with the concrete mass thru mortar providing a permanent amalgamated bond. Portions of the cell alignment allow for continuous reinforcement with steel and grout. The assembled multi-component composite block wall is structurally stable, durable and thermally efficient.
    Type: Application
    Filed: June 14, 2015
    Publication date: November 5, 2015
    Inventor: David William Pfeffer