Patents by Inventor Charles E. Mehlhaf

Charles E. Mehlhaf 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).

  • Apparatus for mixing and aerating material
    Patent number: 6948669
    Abstract: This invention generally relates to reduction drive assemblies and, more particularly, to belt and pulley reduction drive assemblies and related support structure for portable equipment to mix and aerate materials. The support structure is adapted to provide support to a jack shaft and any associated bearing assemblies and to facilitate adjustment and tightening of various components of the reduction assembly.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: September 27, 2005
    Inventor: Charles E. Mehlhaf