Valve opening-closing timing control apparatus
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United States of America Patent
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-
Feb 24, 2015
Grant Date -
Mar 20, 2014
app pub date -
Sep 12, 2013
filing date -
Sep 18, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A valve opening-closing timing control apparatus includes a partition portion partitioning a fluid pressure chamber into an advanced angle chamber and a retarded angle chamber, a phase control portion controlling a rotational phase of a driven-side rotational member relative to a driving-side rotational member, a lock mechanism including a lock member and a lock recess for locking the rotational phase at a predetermined phase, a lock control portion switching the lock mechanism between a locked state and an unlocked state by supplying and discharging a pressurized fluid to and from the lock recess, a phase controlling supply passage supplying the pressurized fluid to the advanced angle chamber and the retarded angle chamber, a lock controlling supply passage supplying the pressurized fluid to the lock recess, and a one-way valve blocking the pressurized fluid supplied to the lock controlling supply passage from flowing into the phase controlling supply passage.
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