Patents by Inventor Robert W. Christiansen

Robert W. Christiansen 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: 4398277
    Abstract: A fabric and body strap having both electrically conductive and elastomeric properties. A fabric is formed by interlacing at least one yarn into a series of interlocking loops and preferably knitted. The yarn includes an end having an electrically conductive fiber and an end having an elastomeric fiber. It is preferred that an electrically conductive yarn and an insulative yarn are interlaced together to form a series of interlocking loops. The electrically conductive yarn includes an end having an electrically conductive fiber and the insulative yarn includes an end having an insulative fiber. Either one or both of the electrically conductive fiber and the insulative fiber is plaited with an end having an elastomeric fiber. The electrically conductive yarn and the insulative yarn may be knit together on two levels forming a face and a back with the electrically conductive yarn forming interlocking loops on the face while the insulative yarn forms interlocking loops on both the face and back.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: August 9, 1983
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert W. Christiansen, Walter M. Westberg
  • Patent number: 4016455
    Abstract: A structure affording ease of manufacture and assembly for a static eliminator of the type including an insulated conductor adapted for attachment to a source of high alternating voltage and a plurality of conductive members disposed along the cable insulation and including outwardly projecting needles capacitively coupled to the conductor to afford neutralization of static electrical charges in an area adjacent the needles. The conductive members are formed from a single thin piece of sheet metal and each comprises a channel generally U-shaped in cross section and having an inner surface adapted to engage the periphery of the insulation, with the needle being a U-shaped portion of the sheet metal bent to project away from the channel .
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: April 5, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Robert W. Christiansen