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:
Mar. 25, 2014
Filed:
Apr. 17, 2012
Michael S. Contratto, Chillicothe, IL (US);
John C. Spangler, Jr., Pekin, IL (US);
Charles E. Lewis, Ii, Normal, IL (US);
Florin M. Marcu, Dunlap, IL (US);
Kristen A. Gerstner, Peoria, IL (US);
Michael S. Contratto, Chillicothe, IL (US);
John C. Spangler, Jr., Pekin, IL (US);
Charles E. Lewis, II, Normal, IL (US);
Florin M. Marcu, Dunlap, IL (US);
Kristen A. Gerstner, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A suspension system for a mobile machine is disclosed. The suspension system may have a seat operatively connected to a cabin floor of the mobile machine, a cylinder connected between the seat and the cabin floor, and a spring associated with the cylinder. The suspension system may also have at least one valve configured to regulate fluid flow into and out of the cylinder, and a controller in communication with the at least one valve. The controller may be configured to detect a failure condition of the suspension system. In response to detection of the failure condition, the controller may be further configured to cause the at least one valve to move to a default position at which fluid flow into and out of the cylinder is restricted by an amount that still allows fluid flow through the at least one valve.