Internal-combustion engines – Poppet valve operating mechanism – Tappet
Reexamination Certificate
2007-08-19
2010-12-07
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Tappet
C123S090550, C074S569000
Reexamination Certificate
active
07845327
ABSTRACT:
A system and method for lash adjustment in the valvetrain of an internal combustion engine include a hydraulic lash adjuster having a damping device to limit rate of movement of a plunger relative to a body to control response time of the lash adjuster reducing or eliminating over-compensation or pump-up of the lash adjuster.
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Comer Floyd Melvin
Lyjak Jeff Chester
Tallio Kevin V.
Brooks & Kushman P.C.
Chang Ching
Ford Global Technologies LLC
Voutyras Julia
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