Patents by Inventor David A. Bonestroo

David A. Bonestroo 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: 4836687
    Abstract: An adjustable stirring device for agitating non-homogeneous waste materials in structures having ingress/egress ports of a predetermined size. The device has a collapsible agitator assembly with a size greater than that of the ingress/egress port when in its expanded and operative state. The agitator assembly has a hub and at least one pivotally attached blade, which is constructed and arranged so that the blade is collapsible for insertion and removal from the ingress/egress port. The agitator assembly and its blades are of a certain configuration for use in municipal and agricultural waste structures. The device is further provided with an adjustable drive shaft assembly connected to the agitator assembly. A frame structure is provided for supporting the drive member assembly and for aligning the agitator assembly in an operative position.
    Type: Grant
    Filed: April 16, 1986
    Date of Patent: June 6, 1989
    Assignee: Oliver A. Kardoes
    Inventors: Oliver A. Kardoes, Richard T. Kardoes, David A. Bonestroo