The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 2007
Filed:
Feb. 15, 2005
Jerry J. Wierzba, Sturgeon Bay, WI (US);
Timothy J. Minkin, Sturgeon Bay, WI (US);
Jerry J. Wierzba, Sturgeon Bay, WI (US);
Timothy J. Minkin, Sturgeon Bay, WI (US);
Marine Travelift, Inc., Sturgeon Bay, WI (US);
Abstract
A steering system () for a vehicle, such as a gantry crane (). The gantry crane () generally includes a support structure () having a first front wheel () and a second opposing front wheel () connected proximate a front portion of the crane (), and a first rear wheel () and a second opposing rear wheel () connected proximate a rear portion of the crane (). A control system connected to the crane includes a user interface () electronically coupled to a command potentiometer () and a programmable controller responsive to the command potentiometer for controlling the angular position of each of the first front wheel (), the second front wheel (), the first rear wheel () and the second rear wheel () to effect a steering mode selected through the user interface ().