Internal-combustion engines – Poppet valve operating mechanism – Hydraulic system
Reexamination Certificate
2005-12-27
2005-12-27
Denion, Thomas (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Hydraulic system
C123S090130, C123S090160
Reexamination Certificate
active
06978747
ABSTRACT:
A valve actuator for controlling a valve between an open and a closed disposition includes couplings to a source of fluid under pressure and a reservoir at substantially ambient pressure. A control fluidly coupled to the source of fluid under pressure and to the reservoir for controlling presenting fluid at selected pressure to affect a reciprocatable component, the reciprocatable component being operably coupled to the valve for shifting the valve between the open and the closed disposition. And, positively, hydraulically shifting the valve between the open and the closed disposition. A method of valve actuation is also included.
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Lei Ning
Yager James H.
Calfa Jeffrey P.
Chang Ching
Denion Thomas
International Engine Intellectual Property Company LLC
Lukasik Susan L.
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