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US 5,878,897 AGranted
Slack reduced lock member for a type E raiway coupler
AssigneeMcConway & Torley Corporation
InventorsFrank Lazzaro, Peter Scott Mautino, Jeffrey D. Wurzer, MaryAnn Glover, Alvin G. Hurt
Life of this patent
Estimating the term…
Abstract
A lock member for a Type E railway freight car coupler formed of an as-cast and austempered ductile iron casting, having a slightly over-sized head portion, the as-cast and austempered ductile iron casting having a minimum tensile strength of about 140 ksi, a minimum yield strength of about 110 ksi, a minimum elongation in 2 inches of about 4%, and a BHN of about 321-388.
Claims13
A lock member for a Type E railway freight car coupler, said lock member comprising:
- an as-cast and austempered ductile iron casting, having a head portion with an "A" dimension within a range of generally between about 4.00 and about 4.063.+-.0.015 inches and a "B" dimension within a range of generally between about 3.00 and about 3.063.+-.0.015 inches, said as-cast and austempered ductile iron casting further having a minimum tensile strength of generally about 140 ksi and a minimum yield strength of generally about 110 ksi and a minimum elongation in 2 inches of generally about 4% and a BHN within a range of generally between about 321 and about 388.
Dependencies are inferred from the claim text.