Valve operating mechanism for internal combustion and like-valved engines
Patent 4593658 Issued on June 10, 1986. Estimated Expiration Date: 
May 1, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 1, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3844528 3853102 3919989 Programmed valve system for internal combustion engine Valve operating mechanism Position indicating valve means Valve position monitor and control system Electro-hydraulic valve control system for internal combustion engine valves Patent #: 4466390 InventorApplicationNo. 06/605922 filed on 05/01/1984US Classes:123/90.11, Electrical system123/90.12, Hydraulic system251/129.04, Remote or follow-up control system for electrical actuator310/311, Piezoelectric elements and devices310/317, Input circuit for mechanical output from piezoelectric element310/323.21, Detector (e.g., sensor)310/328With mechanical energy coupling meansExaminersPrimary: Feinberg, Craig R.Assistant: Okonsky, David A. Attorney, Agent or FirmInternational ClassF01L 9/04 (20060101)AbstractA valve operating mechanism for an internal combustion or like valved engine comprises a piezo-electric control device arranged to control the operating movement of an engine valve in accordance with the extension of the control device and control means for controlling the electrical feed to the piezo-electric device in accordance with parameters of the engine operation fed to it.Other References
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