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:
Nov. 08, 2011
Filed:
Aug. 22, 2009
Shawn D. Noble, Naperville, IL (US);
Michael P. Robinson, Chicago, IL (US);
Hormoz Kerendian, Buffalo Grove, IL (US);
Ashley T. Dudding, Yorkville, IL (US);
Shawn D. Noble, Naperville, IL (US);
Michael P. Robinson, Chicago, IL (US);
Hormoz Kerendian, Buffalo Grove, IL (US);
Ashley T. Dudding, Yorkville, IL (US);
Hendrickson USA, LLC., Itasca, IL (US);
Abstract
An elastomeric spring suspension is described for supporting a longitudinally extending vehicle frame rail above first and second axles forming a tandem axle configuration. The suspension includes a frame hanger assembly mounted to the vehicle frame rail. The frame hanger assembly has two full spring modules, each of which includes two shear springs, a progressive spring rate load cushion having a pyramidal shape with a flattened top surface and a spring mount for mounting the springs. A saddle assembly is connected to the spring mount, and an equalizing beam is connected to the saddle assembly and further connected to the axles. The spring rate for the suspension increases almost linearly as a function of sprung load, resembling a pneumatic suspension. Accordingly, the suspension exhibits excellent ride quality, without sacrificing roll stability.