Patents by Inventor James O. Harl

James O. Harl 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: 4903501
    Abstract: An air baffle for a refrigeration apparatus is provided with means for preventing freeze up of the baffle. The baffle includes a fixed plate and a movable plate each having corresponding apertures therethrough for permitting the control of air flow to a fresh food compartment. The fixed plate is provided with a heating device molded therein which is operable to maintain the fixed plate above the freezing temperature to prevent moisture from freezing thereon. Additionally, spacer means are provided for maintaining the movable plate in spaced relation with the fixed plate, and for preventing the movable plate from coming into contact with an actuator device. The spacer means add to the prevention of freeze up problems as by minimizing moisture which might bridge and freeze up between the movable plates and the fixed plate, or the movable plate and the actuator device.
    Type: Grant
    Filed: June 22, 1988
    Date of Patent: February 27, 1990
    Assignee: Whirlpool Corporation
    Inventor: James O. Harl