Actuator for valve lift controller

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

Reexamination Certificate

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Details

C123S090110, C123S090180, C123S090150, C123S090310

Reexamination Certificate

active

11344180

ABSTRACT:
An actuator for a valve lift controller linearly driving a control shaft of a changing mechanism comprises a feed screw mechanism including a screwed shaft linearly moving along with the control shaft, and a rotation spindle rotating coaxially with the screwed shaft. The feed screw mechanism converts a rotational movement of the rotation spindle into a linear movement of the screwed shaft. Moreover, the actuator comprises a unit attached to the rotation spindle, an electric power distributor located at an opposite side of the screw mechanism relative to the changing mechanism, and an stopper member restricting a movement of the unit in the axial direction from an electric power distributor to the unit.

REFERENCES:
patent: 5209194 (1993-05-01), Adachi et al.
patent: 6129061 (2000-10-01), Okuda et al.
patent: 6390045 (2002-05-01), Mae et al.
patent: 2004/0083997 (2004-05-01), Shibata et al.

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