Metal working – Burnishing – By shot peening or blasting
Reexamination Certificate
2011-08-02
2011-08-02
Bryant, David P (Department: 3726)
Metal working
Burnishing
By shot peening or blasting
C029S090300, C072S076000, C419S028000
Reexamination Certificate
active
07987569
ABSTRACT:
A high performance main bearing cap has particular surfaces densified for improved fatigue crack resistance. The surfaces densified are the bolted face inside of a perimetral margin and outside of bolt head interface areas around the main bolt holes, the surfaces of the main bolt holes and the side bolt hole threads. Preferred methods of densification are single needle programmable pattern peening of the bolted face peened area, over-burnishing of the bolt holes, and forming the threads rather than cutting them for the side bolt threads.
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Cadle Terry M.
Cadle, legal representative Susan M.
Mandel Joel H.
Phillips Donald J.
Bryant David P
GKN Sinter Metals LLC
Quarles & Brady LLP
Taousakis Alexander P
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