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. 10, 2013
Filed:
May. 18, 2010
Ronald J. Sprainis, Springfield, OR (US);
Andrew Robitaille, Batavia, IL (US);
Giuseppe Sammartino, Mount Prospect, IL (US);
Jonathon Marlow, Hobart, IN (US);
Pete Gregar, Chesterton, IN (US);
Bradley Anderson, Des Plaines, IL (US);
Ronald J. Sprainis, Springfield, OR (US);
Andrew Robitaille, Batavia, IL (US);
Giuseppe Sammartino, Mount Prospect, IL (US);
Jonathon Marlow, Hobart, IN (US);
Pete Gregar, Chesterton, IN (US);
Bradley Anderson, Des Plaines, IL (US);
WABTEC Holding Corp, Wilmerding, PA (US);
Abstract
A constant contact side bearing assembly for a railcar includes a housing having a base, a pair of mounting apertures formed through a thickness of the base, a generally cylindrical housing wall upstanding on the base, a pair of diametrically opposed channels, a pair of diametrically opposed openings and a guide member disposed centrally on and upstanding from an inner surface of the base. A cap is disposed for reciprocal axial movement relative to the housing. An elastomeric spring is disposed within a generally closed chamber formed by a combination of the housing and the cap. A pair of air passages is provided for dissipating heat generated during operation of the constant contact side bearing assembly. Each air passage is defined by a pair of aligned openings formed through a wall portion of the cap. Each opening may be disposed within a pocket provided within the cap wall.