Patents by Inventor Jan-Eric O. Bergstedt

Jan-Eric O. Bergstedt 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).

  • Preformed expansion joint system
    Patent number: 5171100
    Abstract: An expansion joint (14) includes a preformed resilient center section (16), which is preferably formed of epoxy modified urethane, having reinforcing members (18) bonded along opposite edges thereof in order to provide a better bond width the adhesive bedding compound (19) and onto the respective structural members (10, 12) while minimizing overall joint with an suspectability to damage and/or cohesive failure. The preformed resilient center section (16) and the recesses of the structural members (10, 12) in which it is received are preferably offset from the gap (24) in an asymmetrical configuration.
    Type: Grant
    Filed: December 12, 1990
    Date of Patent: December 15, 1992
    Inventors: Jan-Eric O. Bergstedt, Jerry W. Ferr