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:
Sep. 28, 2004
Filed:
May. 17, 2003
Applicant:
Inventor:
James R. McGhie, Las Vegas, NV (US);
Assignee:
American Heavy Moving & Rigging Inc., Chino, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62D 5/300 ;
U.S. Cl.
CPC ...
B62D 5/300 ;
Abstract
A method and device for steering a heavy load transport vehicle includes a variable length strut which cooperates with a power steering valve. The length of the variable length strut changes as a function of tow bar rotation. This length variation is mechanically coupled to the power steering valve, which in turn controls an automatic steering system. The present invention permits mechanical steering of the transport vehicle even in the event of failure of the automatic steering system, and does so without placing mechanical stress upon the power steering valve.