Metal working – Method of mechanical manufacture – Process for making bearing or component thereof
Reexamination Certificate
2008-05-27
2008-05-27
Bryant, David P. (Department: 3726)
Metal working
Method of mechanical manufacture
Process for making bearing or component thereof
C072S354200, C072S354600, C072S354800, C384S565000, C384S568000
Reexamination Certificate
active
07377042
ABSTRACT:
A machine, method and tooling to precision cold-form roller blanks for anti-friction bearings. The machine is a multistage progressive former using floating die cavities to enable simultaneous shaping of the ends of the roller with high accuracy and without flash. The tools and staged forming create an improved roller with an advantageous grain pattern and devoid of structural defects previously attributable to the presence of sheared end face material in the radiused corners of the blank and flash at its mid-section.
REFERENCES:
patent: 1601252 (1926-09-01), Lines
Bordner Mark W.
Krintzline Donald E.
Afzali Sarang
Bryant David P.
National Machinery LLC
Pearne & Gordon LLP
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