Patents by Inventor Robert Kalstabakken

Robert Kalstabakken 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).

  • Interlock system for enclosures
    Publication number: 20060175839
    Abstract: An apparatus to interlock a multi-door enclosure includes an actuating member slidably mountable to the enclosure between a primary door and a secondary door. The actuating member includes a first end extendable through an opening in a door post between the primary door and the secondary door. The apparatus includes a latching member slidably mounted to the actuating member and extending over a second end of the actuating member to engage a portion of the secondary door.
    Type: Application
    Filed: February 8, 2005
    Publication date: August 10, 2006
    Inventors: Anteneh Guebre-Tsadik, Robert Kalstabakken, Joseph Ricke, Dean Bergerson