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. 24, 2013
Filed:
Sep. 09, 2011
Applicants:
Andrew J. Westnedge, Bolingbrook, IL (US);
Michael J. Keeler, Naperville, IL (US);
Inventors:
Andrew J. Westnedge, Bolingbrook, IL (US);
Michael J. Keeler, Naperville, IL (US);
Assignee:
Hendrickson USA, L.L.C., Itasca, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F16F 9/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
An air spring for a heavy-duty vehicle axle/suspension system includes a bellows chamber operatively connected to a piston chamber. An opening is disposed between the bellows chamber and the piston chamber in order to allow fluid to communicate between the bellows chamber and the piston chamber. The cross-sectional area of the opening and the volumes of the bellows chamber and the piston chamber are tuned in order to optimize the damping characteristics of the air spring.