Patents by Inventor Gerald J. Sundsrud

Gerald J. Sundsrud 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).

  • Adhesive tape for protecting electrically insulated rail joint
    Patent number: 4209130
    Abstract: An electrically insulated rail joint is protected from electrical shorting by laying an adhesive tape against the undersides and around the toes of the rails across their juncture. The adhesive tape has a thin plastic film backing which is exceedingly stretchy and a thick adhesive which is tacky, stretchy, self-sealing and more adhesive than cohesive.
    Type: Grant
    Filed: November 14, 1977
    Date of Patent: June 24, 1980
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gerald J. Sundsrud, Bruce A. Marteness