Piece for tire mold, method of producing the piece, piece-type tire mold and method of producing the piece-type tire mold
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United States of America Patent
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Jul 22, 2008
Grant Date -
Nov 10, 2005
app pub date -
May 23, 2003
filing date -
May 23, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
To form a fine slit having a width of 0.1 mm or less in each piece of a piece type tire mold, a plate-like shim member 44 having a width of 0.1 mm or less is inserted into a rubber mold 40A when a piece 40 is to be produced, a molten metal such as aluminum is injected into a plaster mold 40B to which the shim member 44 has been transferred and solidified to cast the piece 40, and the shim member 44 is removed from the piece 40 to which the shim member 44 has been transferred to form a slit having a width of 0.1 mm or less in the piece 40.
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