Patents by Inventor Craig Robert Hemmingsen

Craig Robert Hemmingsen 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).

  • Gooseneck trailer hitch convertible to a lifting boom
    Patent number: 7878524
    Abstract: A gooseneck trailer hitch assembly convertible to a lifting boom is disclosed. The gooseneck assembly is convertible between a tow configuration and a boom configuration. The gooseneck trailer hitch assembly comprises a base mount configured to mount on a trailer, a stanchion structure extending upwardly from the base mount, and a boom structure mounted on the stanchion structure above the base mount. The boom structure is movable between a tow configuration in which the boom structure functions as a gooseneck for a hitch and a boom configuration in which the boom structure functions as a lifting boom. A trailer system includes a trailer and a gooseneck trailer hitch assembly convertible between a tow configuration and a boom configuration mounted on the trailer.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: February 1, 2011
    Inventor: Craig Robert Hemmingsen