Patents by Inventor Randall E. Campbell

Randall E. Campbell 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: 6585017
    Abstract: A thickness planer is described having a carriage locking mechanism to minimize vibration and movement of the carriage during the planing operation. Also described is a depth of cut indicator to display the thickness of the material to be removed during the planing operation. A mechanism is also disclosed for facilitating setting the carriage and cutting head to a predetermined height over the base quickly and accurately.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: July 1, 2003
    Assignee: Emerson Electric Co.
    Inventors: Randall E. Campbell, Paul Eckhoff, Liao Juei-Seng
  • Patent number: 6507986
    Abstract: A blade tool that is useful for removing and installing blades into and out of a cutter head which is rotatably mounted in a thickness planer. The blade tool consists of a handle and a hook portion. This hook portion is designed to pull or pry blades away from the cutter head when removing the blades from the cutter head. The handle of the blade tool defines a curved portion that is designed to press against the edge of the blade when installing the blade into the cutter head. The blade tool may further comprise a magnet coupled inside a cavity at the end of the handle. The magnet is designed to extract the blade away from the cutter head once it has been loosened by the hook portion. In one embodiment, the magnet is a rare earth magnet.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: January 21, 2003
    Assignee: Emerson Electric Co.
    Inventors: Frank J. Tomiser, Jr., Randall E. Campbell, Paul J. Eckhoff
  • Patent number: D430581
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: September 5, 2000
    Assignee: Emerson Electric, Co.
    Inventors: Randall E. Campbell, Daniel A. Terpstra, Kiyoshi Hoshino
  • Patent number: D432810
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: October 31, 2000
    Assignee: Emerson Electric Co.
    Inventors: Paul J. Eckhoff, Randall E. Campbell, Frank J. Tomiser, Jr., Daniel A. Terpstra