Metal working – Method of mechanical manufacture – Wheel making
Reexamination Certificate
2008-02-29
2010-06-22
Cozart, Jermie E (Department: 3726)
Metal working
Method of mechanical manufacture
Wheel making
C029S894011, C029S402040, C029S402050, C029S402060, C029S402070, C029S402090, C029S402110, C029S402130, C029S402160, C029S407050, C029S447000, C029S458000, C029S525140, C295S001000
Reexamination Certificate
active
07739794
ABSTRACT:
A method includes shrink fitting a ring member about a railroad wheel body and metallurically bonding the ring member to the railroad wheel body. A wheel assembly includes an inner portion obtained from a worn railroad wheel, a ring member disposed about the inner portion, and suitable electroplating material disposed on at least one of the faying surfaces. The wheel assembly may be heated under suitable conditions to provide diffusion bonding across interfacing faying surfaces to produce an integral wheel structure. Appropriate quenching, tempering, and finishing processes may be utilized to obtain desired properties. An article formed thereby includes an inner body portion obtained from a worn railroad wheel and a metallurically bonded outer circumferential portion. The outer portion may comprise a composition selected for desired wear characteristics.
REFERENCES:
patent: 351431 (1886-10-01), Fowler
patent: 969275 (1910-09-01), Hansen
patent: 3229361 (1966-01-01), Valacich
patent: 6073346 (2000-06-01), Runkle
patent: 6093092 (2000-07-01), Ramanath et al.
patent: 6746064 (2004-06-01), Petrek et al.
patent: 08103856 (1996-04-01), None
Cozart Jermie E
GE Global Patent Operation
General Electric Company
Kramer John A.
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