Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2007-11-27
2007-11-27
Denion, Thomas (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090240, C123S090220, C123S090230, C123S090170
Reexamination Certificate
active
11539712
ABSTRACT:
A valve assembly for an internal combustion engine includes: at least two valves supported by a pair of valve stem holders; a bracket; a closing actuator for pivoting and closing the valves upon contact with a closing lobe of a camshaft; one or more opening actuators for opening at least one of said valves upon contact with an opening lobe of the camshaft; and one or more Belleville spring washers, allowing for an adjustment of a sealing load when the respective valves are closed.
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Denion Thomas
Ferrell, Jr. William C.
Nagle, Jr. David W.
Riddle Kyle M.
Stites & Harbison PLLC
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