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. 20, 2012
Filed:
Aug. 13, 2009
Giuseppe Sammartino, Mount Prospect, IL (US);
Giuseppe Sammartino, Mount Prospect, IL (US);
Wabtec Corporation, Wilmerding, PA (US);
Abstract
A side bearing for use in a railroad car truck includes a cage, a resilient element within the cage, and a cap engaging an upper end of the resilient element. The cage has a bottom surface and an upturned sidewall, while the cap includes a top surface with a downturned sidewall. The downturned sidewall of the cap is at least partially received within the cage when the resilient element is in a partially compressed condition. The cap is fully received within the cage prior to the resilient element moving into a further compressed condition, such that the cage engages a car body wear plate to provide a solid stop that prevents further compression of the resilient element. One or both of the sidewalls includes wear-limiting contours that may include one or more raised pads.