Railway draft appliances – Cushioned – Combined spring and friction
Reexamination Certificate
2007-05-23
2009-12-01
Morano, S. Joseph (Department: 3617)
Railway draft appliances
Cushioned
Combined spring and friction
C213S044000, C213S03200A, C213S04000D, C213S045000
Reexamination Certificate
active
07624884
ABSTRACT:
A railroad car draft gear including a housing having an open end with a friction clutch assembly arranged in operable combination therewith. An elongated elastomeric spring assembly is disposed within the housing for storing energy during axial compression of the draft gear. A spring seat is arranged within the housing between the spring assembly and an end portion of each friction member forming part of the friction clutch assembly. The spring seat defines a surface, arranged in direct contacting relation with an end of the spring assembly, and defines at least one surface incongruity for limiting radial expansion with the elastomeric spring at the end of the spring assembly arranged in direct contacting relation with the spring seat along at least two axes when an axial load is applied to the draft gear.
REFERENCES:
patent: 2667277 (1954-01-01), Mulcahy
patent: 3741406 (1973-06-01), Anderson
patent: 4198037 (1980-04-01), Anderson
patent: 5104101 (1992-04-01), Anderson et al.
patent: 5351844 (1994-10-01), Carlstedt
patent: 6478173 (2002-11-01), Carlstedt
International Searching Authority/USPTO; International Search report regarding PCT/US2008/05800; Sep. 18, 2008; 2 pages.
International Searching Authority/USPTO; Written Opinion of the International Searching Authority regarding PCT/US2008/05800; Sep. 18, 2008; 6 pages.
Carlstedt Richard A.
Jurasek Kris C.
Palermo Michael R.
Kuhfuss Zachary
Law Office of John W. Harbst
Miner Enterprises Inc.
Morano S. Joseph
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