Patents by Inventor David M. Wiegand

David M. Wiegand 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).

  • Hoisting apparatus
    Patent number: 9073734
    Abstract: A hoisting apparatus includes an apparatus mounting bracket including a mount bracket plate and at least one bracket attachment assembly having a pair of gripper arms pivotally carried by the mount bracket plate. Each of the gripper arms has a plurality of gripper arm teeth. An arm tightening mechanism engages the gripper arms. A boom assembly is pivotally carried by the apparatus mounting bracket. A boom actuating assembly is carried by the apparatus mounting bracket and engages the boom assembly.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: July 7, 2015
    Assignee: Corn Crane LLC
    Inventors: Ronald D. Cates, David M. Wiegand, Eddie R. Bedre