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. 17, 2009
Filed:
Nov. 16, 2006
Nathaniel L. Mitchell, Ypsilanti, MI (US);
Anand G. Huprikar, Novi, MI (US);
Terrence A. Bell, Grove City, PA (US);
Nathaniel L. Mitchell, Ypsilanti, MI (US);
Anand G. Huprikar, Novi, MI (US);
Terrence A. Bell, Grove City, PA (US);
BASF Corporation, Florham Park, NJ (US);
Abstract
A side bearing assembly for a railway vehicle includes a cage, a cap coupled to and moveable relative to the cage, and an insulator disposed between the cage and the cap. The railway vehicle includes a bolster extending laterally and a car body disposed on the bolster. The cage is attached to the bolster and the cap supports a portion of the car body such that the side bearing assembly is disposed between the bolster and the car body to dampen lateral pivoting of the car body relative to the bolster. The insulator is formed of microcellular polyurethane for resiliently deforming and storing energy during compressive movement between the car body and the bolster through a range of temperatures between −40° C. and 80 ° C. Microcellular polyurethane maintains flexibility at this temperature range such that the side bearing assembly maintains its ability to dampen lateral pivoting through this temperature range.