Patents by Inventor Donald G. Pannhoff

Donald G. Pannhoff 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: 6233964
    Abstract: The present invention comprises a low height ice maker designed primarily for use in under counter applications. An ice retaining bin includes a top end opening covered in part by a top panel and the remaining part by an ice access door. The bin is secured to a base, the base retaining certain components of a refrigeration system including; a condenser, a compressor, an expansion valve and a hot gas defrost valve. The base also retains a water dump valve, the electronic control for the ice maker and the condenser fan. When the bin is secured to the base, front and rear access areas are defined which areas can be opened by removing releasably securable panels. The control electronics, the condenser fan and high and low side service valves are positioned adjacent the front access. The expansion valve, hot gas defrost valve and the dump valve are positioned adjacent the rear access. An ice cube forming evaporator assembly is secured to an interior surface of the bin.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: May 22, 2001
    Assignee: IMI Cornelius Inc.
    Inventors: Thomas E. Ethington, Donald G. Pannhoff, Minjun Huang, Qiao Lu
  • Patent number: 6109043
    Abstract: The present invention comprises a low height ice maker designed primarily for use in under counter applications. An ice retaining bin includes a top end opening covered in part by a top panel and the remaining part by an ice access door. The bin is secured to a base, the base retaining certain components of a refrigeration system including; a condenser, a compressor, an expansion valve and a hot gas defrost valve. The base also retains a water dump valve, the electronic control for the ice maker and the condenser fan. When the bin is secured to the base, front and rear access areas are defined which areas can be opened by removing releasably securable panels. The control electronics, the condenser fan and high and low side service valves are positioned adjacent the front access. The expansion valve, hot gas defrost valve and the dump valve are positioned adjacent the rear access. An ice cube forming evaporator assembly is secured to an interior surface of the bin.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: August 29, 2000
    Assignee: IMI Cornelius Inc.
    Inventors: Qiao Lu, Thomas E. Ethington, Donald G. Pannhoff, Minjun Huang