Investment casting
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 21, 1998
Grant Date -
N/A
app pub date -
Sep 30, 1996
filing date -
Sep 30, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Methods are provided for producing investment cast articles, such as orthopedic implants, or portions thereof, having at least a partially textured surface that is formed during casting of the article. In an exemplary method, a textured metal casting is produced by creating a heat destructible pattern and spraying the pattern with a texturing material to cause the texturing material to form a textured surface on at least a portion of the pattern. In another embodiment, a textured template is pressed against a heat softenable pattern to provide a textured pattern. With respect to each of these methods, a shell is the created around the textured pattern to form a mold, and the pattern is removed from the shell. Molten metal is introduced into the mold and allowed to harden, after which the mold is removed.
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