Internal-combustion engines – Poppet valve operating mechanism – Plural valve trains – single actuator
Reexamination Certificate
2011-08-30
2011-08-30
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Plural valve trains, single actuator
C123S090390, C123S090610, C029S888200, C074S559000, C074S569000
Reexamination Certificate
active
08006661
ABSTRACT:
An internal combustion engine has one or more engine cylinders (12) within which fuel is combusted and a pair of cylinder valves (14, 16) spring-biased (22, 24) closed but open in unison to place the respective cylinder in flow communication with one of an intake and an exhaust. A bridge (34) bridges ends of the pair external to the cylinder and has a spherically concave depression (42) in a face that is opposite a face that bears against the ends of the pair. The depression is located intermediate locations at which the ends of the pair bear against the bridge. A pivot foot (44) has a spherically convex surface (46) seated with substantial conformity in the depression and a flat surface (48) opposite the spherically convex surface. The flat surface of the pivot foot abuts a flat surface (50) of a rocker (30) that when rocked acts through the pivot foot and bridge to open the respective pair of valves.
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International Search Report for PCT US2010/041460 dated Sep. 3, 2010.
Written Opinion of the International Searching Authority for PCT US2010/041460 dated Sep. 3, 2010.
Chang Ching
Clafa Jeffrey P.
International Engine Intellectual Property Company LLC
Nimz Jack D.
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