Patents by Inventor Jack I. Lipps

Jack I. Lipps 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: 4199193
    Abstract: The mining machine consists of a main frame having a front portion and a rearwardly extending portion, and cutter heads disposed for movement across the front portion for dislodging mineral. A conveyor system is provided which extends across of the front of the main frame and along the rearwardly extending portion thereof for carrying dislodge mineral from the mine face. Forward roof support jacks, which are attached to the main frame for unitary movement therewith, provide temporary roof support as the entry is being formed. Rear roof support jacks, disposed behind the forward roof support jacks, also provide temporary roof support. Sumping cylinders, which are disposed generally parallel to the mine floor, connect the rear roof support jacks to the main frame and are used for moving the mining machine. The sumping cylinders are connected to the main frame with a universal joint connection to permit free movement of each sumping cylinder around its point of connection to the main frame.
    Type: Grant
    Filed: July 28, 1978
    Date of Patent: April 22, 1980
    Assignee: Acme Machinery Company
    Inventors: Earl M. Damron, Jack I. Lipps