Patents by Inventor W. O. Nelson

W. O. Nelson 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).

  • Trunk-mounted portable crane
    Patent number: 5090580
    Abstract: A portable crane for hoisting electric scooters, wheelchairs and the like includes a column assembly, a boom assembly, a base assembly and a winch assembly. The column assembly is removably and pivotally mounted between an opened vehicle trunk lid and a trunk floor. The column assembly includes top and bottom pivot pins which rotatably engage pivot pin receiving holes and about which the boom assembly rotates. The column assembly and boom assembly are collapsible so as to allow the trunk lid to close.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: February 25, 1992
    Assignees: Walbert O. Nelson, Eleanor C. Nelson
    Inventor: W. O. Nelson