Patents by Inventor Cynthia A. Bjerrum

Cynthia A. Bjerrum 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: 8573915
    Abstract: A trailer for transporting large equipment, buses, recreational vehicles, wherein the trailer includes a main deck at its forward end which is supported upon first and second elongated frame members. First and second running gear beams extend rearwardly from the rearward ends of the first and second frame members with each of the running gear beams including an upwardly and rearwardly extending first beam portion, a rearwardly and horizontally extending second beam portion and a downwardly and rearwardly extending third beam portion. First and second ramps are positioned laterally outwardly of the third beam portions of the first and second running gear beams and are movable between upper and lower positions. Vertically movable bolsters are positioned between the wheels of the axles which support the trailer at the rearward end thereof. The bolsters may be moved from a lower transport position to an upper loading/unloading position.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: November 5, 2013
    Assignee: Dakota Manufacturing Company, Inc.
    Inventors: Dale J. Dierks, Michael R. Hanson, Don L. Huber, Ray E. Paradis, A. Dean Oehlerking, Cynthia A. Bjerrum
  • Publication number: 20120248736
    Abstract: A trailer for transporting large equipment, buses, recreational vehicles, wherein the trailer includes a main deck at its forward end which is supported upon first and second elongated frame members. First and second running gear beams extend rearwardly from the rearward ends of the first and second frame members with each of the running gear beams including an upwardly and rearwardly extending first beam portion, a rearwardly and horizontally extending second beam portion and a downwardly and rearwardly extending third beam portion. First and second ramps are positioned laterally outwardly of the third beam portions of the first and second running gear beams and are movable between upper and lower positions. Vertically movable bolsters are positioned between the wheels of the axles which support the trailer at the rearward end thereof. The bolsters may be moved from a lower transport position to an upper loading/unloading position.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 4, 2012
    Inventors: Dale J. Dierks, Michael R. Hanson, Don L. Huber, Ray E. Paradis, A. Dean Oehlerking, Cynthia A. Bjerrum
  • Patent number: 7658587
    Abstract: A hydraulic tail trailer comprising a main deck having a main tail assembly pivotally connected to the rearward end thereof with the pivotal connection therebetween being located forwardly of the centerline of the rear axle of the trailer suspension system. The location of the hinge between the main deck and the main tail assembly, by being located forwardly of the centerline of the rear axle, provides a main tail having an increased length thereby providing a lower loading angle without increasing the overall length of the trailer. The forward end of the main deck is pivotally connected to the rearward end of an upper deck so that the main deck may be raised which further reduces the angle between the rearward end of the main deck and the forward end of the main tail for loading and unloading purposes.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: February 9, 2010
    Assignee: Dakota Manufacturing Co., Inc.
    Inventors: Dale Dierks, A. Dean Oehlerking, Ray Paradis, Brent Hohman, Cynthia Bjerrum, Don Huber, Steve Koch
  • Patent number: 7547178
    Abstract: A hydraulic tail trailer comprising a main deck having a main tail assembly pivotally connected to the rearward end thereof with the pivotal connection therebetween being located forwardly of the centerline of the rear axle of the trailer suspension system. The location of the hinge between the main deck and the main tail assembly, by being located forwardly of the centerline of the rear axle, provides a main tail having an increased length thereby providing a lower loading angle without increasing the overall length of the trailer.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: June 16, 2009
    Inventors: Dale Dierks, Ray Paradis, A. Dean Oehlerking, Brent Hohman, Cynthia Bjerrum