SEAT RECLINING DEVICE
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United States of America Patent
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Issued Date -
Oct 4, 2018
app pub date -
Feb 28, 2018
filing date -
Feb 28, 2018
priority date (Note) -
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Abstract
A seat reclining device includes: a first gear member; a second gear member; paired wedge members arranged in an eccentric space; a biasing member which biases the paired wedge members in directions away from each other; and a drive member. The drive member includes a first drive protrusion which is arranged in a small-width portion of the eccentric space and a second drive protrusion which is arranged in a large-width portion of the eccentric space. When the drive member rotates the paired wedge members, counterforce acting on a shaft portion of the drive member against first pressing force generated by the first drive protrusion pressing one of the paired wedge members and second pressing force generated by the second drive protrusion pressing the other one of the paired wedge members pushes a boss portion of the first gear member in a direction toward the one wedge member.
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