Patents by Inventor Chris Butz

Chris Butz 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).

  • Method and apparatus for preventing ice build up around a freezer door
    Patent number: 6408636
    Abstract: To prevent ice build up around the door of a walk in freezer a heater is provided under the threshold of the door to heat a column of air between the inner surface of the door and the flexible thermal barrier inside the freezer. The heater is operated continuously regardless of whether the door is open or closed to maintain the surfaces around the door, and the thermal barrier, at above freezing temperatures.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: June 25, 2002
    Inventors: Larry Backes, Chris Butz