Patents by Inventor Daniel R. Wahlstrom

Daniel R. Wahlstrom 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).

  • Adjustable counterweight system for a machine for forming concrete blocks, pavers or the like
    Patent number: 5983752
    Abstract: An adjustable counterweight apparatus for use in vibratory machines, such as concrete molding machines, where a rotating shaft is engaged with a vibrating or oscillating load. The counterweight includes a first bore for receiving a rotating shaft, and a second bore for receiving a plug having a weight selected to dynamically balance the rotating shaft and oscillating load.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: November 16, 1999
    Assignee: Columbia Machine, Inc.
    Inventor: Daniel R. Wahlstrom