Patents by Inventor Karl Harvey Lundahl

Karl Harvey Lundahl 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: 8162026
    Abstract: A spring assembly is provided for an upward acting door that travels on a travel path while opening. The assembly includes a shaft, a torsion spring and a second spring. The torsion spring is connected to the shaft and provides a lifting force for the door throughout the travel path. The second spring is connected to the shaft and provides a lifting force for the door during only a portion of the travel path. In another aspect, a spring assembly is provided for an upward acting door that travels on a travel path while closing. The torsion spring is connected to the shaft and provides a weight supporting force for the door throughout the travel path. The second spring is connected to the shaft and provides a weight supporting force for the door during only a portion of the travel path.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: April 24, 2012
    Assignee: Industrial Spring Company
    Inventor: Karl Harvey Lundahl
  • Patent number: 6185855
    Abstract: A fishing rod and reel holder having a one piece wire frame elevates and holds a fishing rod in an angular position relative to the frozen surface of a body of water. The holder has a generally flat base member and an angularly disposed helical body adapted to support the rod adjacent a hole in the frozen surface. The fishing rod is turned to position the shank of the fishing reel between coils of the helical body thereby releasably secure the rod to the holder.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: February 13, 2001
    Assignee: Outdoor Creations, Inc.
    Inventors: Gerald R. Sizer, Karl Harvey Lundahl
  • Patent number: D416071
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: November 2, 1999
    Assignee: Outdoor Creations, Inc.
    Inventors: Gerald R. Sizer, Karl Harvey Lundahl