Internal-combustion engines – Poppet valve operating mechanism – With nonvalving movement
Reexamination Certificate
2011-08-16
2011-08-16
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With nonvalving movement
C123S090280, C123S188100, C123S190100, C137S331000
Reexamination Certificate
active
07997243
ABSTRACT:
An improved ball type valve rotator is provided that includes a main body segment having a bottom wall with an upper surface, and a body cap that overlies the main body segment. A ball cages assembly is housed between the main body segment and the body cap. The ball cages assembly includes multiple ramps with lower surfaces that are spaced from the bottom wall upper surface of the main body segment. This allows the multiple ramps to deflect toward the bottom wall upper surface of the main body segment. The multiple ramps can deflect independently of each other, so that different distances can be defined between the different ramps and the bottom wall upper surface of the main body segment. In so doing, the ball cage assembly can accommodate non-uniform applications of force into the valve rotator.
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International Search Report for International application No. PCT/US2009/041600, International filed is Apr. 24, 2009.
Boyle Fredrickson , S.C.
Chang Ching
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