Patents by Inventor Robert W. Kirchhoff

Robert W. Kirchhoff 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).

  • Easy lift saw platform
    Patent number: 7703211
    Abstract: An extendable tree trimming saw is made easy to handle by providing a foot plate on which to rest the weight of the pole and a winch for raising and lowering the saw. The extendable pole is pivotally connected to the foot plate, preferably through a coil spring or elastomeric mass that aides in holding the pole upright and restoring it to an upright position after a cutting operation.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: April 27, 2010
    Inventor: Robert W. Kirchhoff
  • Draw-trace-erase art training device
    Patent number: 7101184
    Abstract: An art training device. A graphics scroll presents various images suitable for tracing or copying, or blank spaces for freehand drawing, as it is wound or unwound on spindles. A transparent drawing sheet is mounted just above the scroll for the user to practice on.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: September 5, 2006
    Inventor: Robert W. Kirchhoff
  • Heat sealing garbage cabinet
    Patent number: 6481810
    Abstract: A heat sealing garbage cabinet stores a plastic bag of garbage. When the bag is but partially full, the bag is temporarily sealed by folding and pressure sealing the top of the bag. When the bag is full, it is heat sealed. A slitter unit cuts a handle-hole in the bag for easy disposal.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: November 19, 2002
    Inventor: Robert W. Kirchhoff