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. 10, 1993
Filed:
Nov. 02, 1992
John J Krone, Dunlap, IL (US);
Delbert D Dester, Washington, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A steering control system is provided in which one pair of wheels of an articulated steer vehicle are steered in synchronization with the articulation steering. This is accomplished by providing a first two-position valve for directing the fluid exhausted from the rod end of one articulation steer jack to the head end chamber of one of the rear wheel steering jacks and to the rod end chamber of the other rear wheel steering jack for steering the rear wheels in a first direction and another two-position valve for directing the fluid exhausted from the rod end chamber of the other articulation steering jack to the rod end chamber of the one rear wheel steering jack and the head end chamber of the other rear wheel steering jack for steering the rear wheels in the opposite direction. The rod end and head end chambers of the rear wheel steering jacks are sized in relation to the rod end chambers of the articulation steering jacks so that the steering angle of the rear wheels is synchronized with the articulation steer angle even though the articulation steering jacks are much larger than the steering jacks for the rear wheels.