Railway rolling stock – Trucks – Bogie
Patent
1998-05-19
2000-11-21
Morano, S. Joseph
Railway rolling stock
Trucks
Bogie
384423, B61F 300
Patent
active
061487341
ABSTRACT:
A railway car side bearing includes a lower housing member, an upper housing member spaced apart from the lower housing member, and an elastomeric spring member interposed between the upper and lower housing members that buckles upon application of vertical loading to provide a spring rate that softens within a range of compressive loads. The upper and lower housing members cooperate with each other to allow for relative vertical movement therebetween, but restrain lateral and rotational movement therebetween. The elastomeric spring member has a first set of spring rates when subjected to axial loads within a first range. However, when the side bearing is subjected to axial loads within an second range, the elastomeric spring member buckles and exhibits a second set of substantially softer spring rates.
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Gnibus Michael M.
Lord Corporation
McCarry, Jr. Robert J.
Morano S. Joseph
Wayland Randall S.
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