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, 2019
Filed:
Apr. 14, 2016
Firestone Industrial Products Company, Llc, Nashville, TN (US);
Joshua R. Leonard, Noblesville, IN (US);
Graham R. Brookes, Noblesville, IN (US);
Paul J. Fessel, Franklin, TN (US);
Firestone Industrial Products Company, LLC, Nashville, TN (US);
Abstract
End member assemblies include an end member wall dimensioned for securement to a flexible spring member to at least partially define a spring chamber. A reservoir wall is supported on the end member wall and at least partially defines a reservoir chamber having a substantially-fixed volume. The reservoir wall includes at least one passage such that the reservoir chamber is disposed in fluid communication with the spring chamber. A passive control device is operatively associated with the passage such that under a first predetermined condition the passive control device is in a first operable condition in which the gas spring assembly has a first spring rate and such that under a second predetermined condition of use the passive control device is in a second operable condition in which the gas spring assembly has a second spring rate. Gas spring assemblies and suspension systems are also included.