Internal-combustion engines – Particular piston and enclosing cylinder construction – Cylinder head
Reexamination Certificate
2011-06-28
2011-06-28
Cuff, Michael (Department: 3783)
Internal-combustion engines
Particular piston and enclosing cylinder construction
Cylinder head
C060S322000, C060S323000
Reexamination Certificate
active
07966986
ABSTRACT:
An exhaust system includes a cylinder head having a plurality of exhaust ports. Integrally formed with the cylinder head are a plurality of independent and separate tubes. The tubes are cast, molded or otherwise integrally formed with the exhaust ports of the cylinder head. The cylinder head and tubes eliminate the need for an exhaust flange, welding the tubes to the exhaust flange and securing the exhaust flange to the cylinder head. As a result, the exhaust system has less weight and improved performance over prior art cylinder head and exhaust assemblies.
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International Search Rep, Aug. 8, 2008, Metaldyne Company LLC.
Cuff Michael
Hyspan Precision Products, Inc.
McDonald Hopkins LLC
Nguyen Hung Q
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