Patents by Inventor David A. Hauch

David A. Hauch 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).

  • Grain separator
    Patent number: 5335792
    Abstract: A grain separator is disclosed comprising a plurality of operatively connected grain separator units and a grain inlet for feeding grain into the separator, wherein the grain is separated . The grain separator also has an outlet for dispensing the grain after the grain is separated and an internal drive for operating the units in separating grain.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: August 9, 1994
    Assignee: Carter Day International, Inc.
    Inventor: David A. Hauch
  • Hydraulic press having integrated column clamps and actuators
    Patent number: 4907959
    Abstract: A hydraulic press has smooth columns that mount relatively movable mold support platens on a base and a ram or cross head. The bed and ram are rigid, low deflection fabricated members mounted on the columns. The clamps that clamp the movable ram in molding position have integrated pressing and stripping cylinders for performing the actual molding operation. The movable ram member is opened and closed with actuators separate from the molding force cylinders. The construction permits making a lighter weight press without a heavy crown at the top of the press.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: March 13, 1990
    Assignee: MTS Systems Corporation
    Inventor: David A. Hauch