Metal working – Method of mechanical manufacture – Process for making bearing or component thereof
Reexamination Certificate
2011-04-19
2011-04-19
Bryant, David P (Department: 3726)
Metal working
Method of mechanical manufacture
Process for making bearing or component thereof
C029S898100, C029S898120, C029S898130, C029S898140, C029S898150, C264S610000, C264S635000, C264S645000, C264S656000, C264S636000
Reexamination Certificate
active
07926182
ABSTRACT:
A method for manufacturing a hydrodynamic bearing with hydrodynamic pressure generating grooves comprises steps of: step201: providing a substrate with a first annular protrusion and a plurality of projections formed on a periphery thereof, the projections being in a side of the first annular protrusion; step202: placing the substrate in a middle of a hollow mold, then injecting a feedstock of powder and molten binder under pressure into the mold to surround the substrate, thus forming a desired bearing preform; step203: separating the substrate from the bearing preform by means of catalytic debinding; step204: separating the molten binder from the bearing preform; step205: sintering the bearing preform to thereby form the hydrodynamic bearing.
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Afzali Sarang
Bryant David P
Foxconn Technology Co., Ltd.
Knapp Jeffrey T.
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