Metal founding – Process – Shaping liquid metal against a forming surface
Reexamination Certificate
2005-05-31
2005-05-31
Stoner, Kiley S. (Department: 1725)
Metal founding
Process
Shaping liquid metal against a forming surface
C164S131000, C164S138000, C123S193300
Reexamination Certificate
active
06899158
ABSTRACT:
There is provided a method for manufacturing a cylinder for an internal combustion engine by making use of an insert core, which makes it possible to manufacture the cylinder by a die casting method such as a high-pressure die casting method at low cost and in high accuracy. The insert core to be employed herein includes: a cylindrical body having substantially the same outer diameter as the diameter of bore of the cylinder to be obtained; a scavenging port-forming portion projecting radially outward from the cylindrical body and having substantially the same cross-sectional configuration as that of the scavenging port; a suction port-forming portion projecting radially outward from the cylindrical body and having substantially the same cross-sectional configuration as that of at least the cylinder bore-side end portion of a suction port; and an exhaust port-forming portion projecting radially outward from the cylindrical body and having substantially the same cross-sectional configuration as that of at least the cylinder bore-side end portion of an exhaust port.
REFERENCES:
patent: 3844334 (1974-10-01), Frederickson
patent: 6345439 (2002-02-01), Matuura et al.
Matuura Fujihiro
Shoji Takio
Yamada Daiju
Baker & Botts LLP
Kioritz & Corporation
Lin I.-H.
Stoner Kiley S.
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