Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece
Reexamination Certificate
2006-03-02
2010-02-02
Del Sole, Joseph S. (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
C606S076000, C623S022110
Reexamination Certificate
active
07655162
ABSTRACT:
A method for forming an acetabular shell includes providing a working surface such as a mandrel, and spraying the working surface with a first layer of material having a first composition such as aluminum oxide. After a suitable thickness is generated, the spray composition is gradually changed to other compositions having desired particle sizes and distribution. In one example, the composition is changed to a mixture of aluminum oxide and titanium oxide and/or titanium. As thickness builds up, the relative amount of aluminum oxide is decreased such that the composition is all titanium and titanium oxide. After a desired thickness is generated, the acetabular shell is extracted off the mandrel.
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Biomet Manufacturing Corp.
Del Sole Joseph S.
Harness Dickey
Robitaille John P
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