Patents by Inventor Donald D. Day

Donald D. Day 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).

  • Ice making machine with freeze and harvest control
    Patent number: 5129237
    Abstract: An ice maker including freeze and harvest controls is disclosed. The evaporator includes a unitary evaporator and ice mold. A compressor and condenser cool the evaporator to freeze ice on the mold in a normal refrigeration cycle and the mold is defrosted by hot gas to harvest ice from the ice mold. The temperature of the ice mold and the liquid line temperature of the condenser are sensed to control the length of time of the ice forming cycle.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: July 14, 1992
    Assignee: SerVend International, Inc.
    Inventors: Donald D. Day, Delbert J. Potter
  • Ice making machine with freeze and harvest control
    Patent number: 5042263
    Abstract: An ice maker including freeze and harvest controls is disclosed. The evaporator includes a unitary evaporator and ice mold. A compressor and condenser cool the evaporator to freeze ice on the mold in a normal refrigeration cycle and the mold is defrosted by hot gas to harvest ice from the ice mold. The temperature of the ice mold and the liquid line temperature of the condenser are sensed to control the length of time of the ice forming cycle.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: August 27, 1991
    Assignee: SerVend International, Inc.
    Inventors: Donald D. Day, Delbert J. Potter
  • Ice making machine with freeze and harvest control
    Patent number: 4947653
    Abstract: An ice maker including freeze and harvest controls is disclosed. The evaporator includes a unitary evaporator and ice mold. A compressor and condenser cool the evaporator to freeze ice on the mold in a normal refrigeration cycle and the mold is defrosted by hot gas to harvest ice from the ice mold. The temperature of the ice mold and the liquid line temperature of the condenser are sensed to control the length of time of the ice forming cycle.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: August 14, 1990
    Assignee: Hussmann Corporation
    Inventors: Donald D. Day, Delbert J. Potter