Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Reexamination Certificate
2005-07-22
2008-08-26
Wyszomierski, George (Department: 1793)
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
C148S589000, C148S639000, C148S645000
Reexamination Certificate
active
07416621
ABSTRACT:
A method is disclosed for rounding and/or flattening an annular part that is out of round and/or not flat due to non-uniform internal stresses. The part is first checked for out of round and/or out of flat conditions. Out of round parts are then rounded by introducing compressive stresses into selected surface sections of the part whereby the introduced compressive stresses cause deformation of the annular part thereby rounding the annular part. Alternatively, out of round parts are rounded by relieving compressive stresses in selected surface sections of the part whereby the relieving of compressive stresses causes deformation of the annular part thereby rounding the annular part. Out of flat parts are flattened by introducing compressive stresses into selected surface sections of the part whereby the introduced compressive stresses cause deformation of the annular part thereby flattening the annular part. Alternatively, out of flat parts are rounded by relieving compressive stresses in selected end surface sections of the part whereby the relieving of compressive stresses causes deformation of the annular part thereby flattening the annular part.
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GKN Sinter Metals, Inc.
Quarles & Brady LLP
Wyszomierski George
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