Rotary operation device
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United States of America Patent
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Sep 1, 2015
Grant Date -
Sep 12, 2013
app pub date -
Feb 12, 2013
filing date -
Mar 6, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A rotary operation device that can prevent misassembly of a rotary operation member and a rotational force transmission member, has a rotary operation member, a rotation detector, and a rotational force transmission member. The rotary operation member has a first gear and the rotational force transmission member has a second gear and a transmission axis. One of the rotary operation member and the rotational force transmission member has a first interference portion that interferes with the other member in a position misaligned from a proper engagement position where the first gear and the second gear are engaged in a proper phase relationship. The other member comprises a second interference member that interferes with the first interference portion in a position misaligned from the proper engagement position and an escape portion that receives the first interference portion in the proper engagement position to allow assembly with the one member.
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