Patents by Inventor Jan E. F. Jacobson

Jan E. F. Jacobson 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: 5215289
    Abstract: An axle mounted trailer lifting device has a main body including a mounting mechanism at one end and a strut extending from the end opposite the mounting mechanism. The strut is pivotally mounted within the main body. When lifting the trailer is desired, to fix a flat tire or other malfunction, the strut may be moved by rearward motion on the trailer from a rest position, where it does not contact the ground, to an operative position, where it comes to rest within the main body in contact with the ground at an angle of less than 90 degrees. The main body and strut are configured to permit locking the strut in either of these two positions. The mounting end of the device is mounted to the trailer axle or other portion of the trailer. This device may also be used in conjunction with automobiles or other motorized vehicles.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: June 1, 1993
    Inventor: Jan E. F. Jacobson